diff --git a/apps/admin/data/fitai.db b/apps/admin/data/fitai.db
index 4622ff3..46f7a96 100644
Binary files a/apps/admin/data/fitai.db and b/apps/admin/data/fitai.db differ
diff --git a/apps/admin/package-lock.json b/apps/admin/package-lock.json
index 21424c2..ae7fc6e 100644
--- a/apps/admin/package-lock.json
+++ b/apps/admin/package-lock.json
@@ -22,6 +22,7 @@
         "autoprefixer": "^10.4.21",
         "axios": "^1.13.2",
         "bcryptjs": "^3.0.3",
+        "date-fns": "^4.1.0",
         "lucide-react": "^0.553.0",
         "next": "^16.0.1",
         "postcss": "^8.5.6",
@@ -4931,6 +4932,16 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/date-fns": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-4.1.0.tgz",
+      "integrity": "sha512-Ukq0owbQXxa/U3EGtsdVBkR1w7KOQ5gIBqdH2hkvknzZPYvBxb/aa6E8L7tmjFtkwZBu3UXBbjIgPo/Ez4xaNg==",
+      "license": "MIT",
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/kossnocorp"
+      }
+    },
     "node_modules/debug": {
       "version": "4.4.3",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.3.tgz",
diff --git a/apps/admin/package.json b/apps/admin/package.json
index d5b3afd..18f57f9 100644
--- a/apps/admin/package.json
+++ b/apps/admin/package.json
@@ -25,6 +25,7 @@
     "autoprefixer": "^10.4.21",
     "axios": "^1.13.2",
     "bcryptjs": "^3.0.3",
+    "date-fns": "^4.1.0",
     "lucide-react": "^0.553.0",
     "next": "^16.0.1",
     "postcss": "^8.5.6",
diff --git a/apps/admin/src/app/api/admin/attendance/route.ts b/apps/admin/src/app/api/admin/attendance/route.ts
new file mode 100644
index 0000000..3eb3059
--- /dev/null
+++ b/apps/admin/src/app/api/admin/attendance/route.ts
@@ -0,0 +1,23 @@
+import { auth } from '@clerk/nextjs/server'
+import { NextResponse } from 'next/server'
+import { getDatabase } from '@/lib/database'
+
+export async function GET(req: Request) {
+    try {
+        const { userId } = await auth()
+        if (!userId) return new NextResponse('Unauthorized', { status: 401 })
+
+        const db = await getDatabase()
+        const user = await db.getUserById(userId)
+
+        if (!user || user.role !== 'admin') {
+            return new NextResponse('Forbidden', { status: 403 })
+        }
+
+        const attendance = await db.getAllAttendance()
+        return NextResponse.json(attendance)
+    } catch (error) {
+        console.error('Admin attendance error:', error)
+        return new NextResponse('Internal Server Error', { status: 500 })
+    }
+}
diff --git a/apps/admin/src/app/api/attendance/check-in/route.ts b/apps/admin/src/app/api/attendance/check-in/route.ts
new file mode 100644
index 0000000..10d9122
--- /dev/null
+++ b/apps/admin/src/app/api/attendance/check-in/route.ts
@@ -0,0 +1,44 @@
+import { auth } from '@clerk/nextjs/server'
+import { NextResponse } from 'next/server'
+import { getDatabase } from '@/lib/database'
+import { ensureUserSynced } from '@/lib/sync-user'
+
+export async function POST(req: Request) {
+    try {
+        const { userId } = await auth()
+        if (!userId) return new NextResponse('Unauthorized', { status: 401 })
+
+        const db = await getDatabase()
+
+        // Ensure user exists in DB (sync from Clerk if needed)
+        await ensureUserSynced(userId, db)
+
+        let client = await db.getClientByUserId(userId)
+
+        if (!client) {
+            // Auto-create client profile if it doesn't exist
+            console.log('Client profile not found, creating new one for user:', userId)
+            client = await db.createClient({
+                userId,
+                membershipType: 'basic',
+                membershipStatus: 'active',
+                joinDate: new Date()
+            })
+        }
+
+        // Check if already checked in
+        const activeCheckIn = await db.getActiveCheckIn(client.id)
+        if (activeCheckIn) {
+            return new NextResponse('Already checked in', { status: 400 })
+        }
+
+        const body = await req.json()
+        const { type = 'gym', notes } = body
+
+        const attendance = await db.checkIn(client.id, type, notes)
+        return NextResponse.json(attendance)
+    } catch (error) {
+        console.error('Check-in error:', error)
+        return new NextResponse('Internal Server Error', { status: 500 })
+    }
+}
diff --git a/apps/admin/src/app/api/attendance/check-out/route.ts b/apps/admin/src/app/api/attendance/check-out/route.ts
new file mode 100644
index 0000000..2bfdbcb
--- /dev/null
+++ b/apps/admin/src/app/api/attendance/check-out/route.ts
@@ -0,0 +1,28 @@
+import { auth } from '@clerk/nextjs/server'
+import { NextResponse } from 'next/server'
+import { getDatabase } from '@/lib/database'
+
+export async function POST(req: Request) {
+    try {
+        const { userId } = await auth()
+        if (!userId) return new NextResponse('Unauthorized', { status: 401 })
+
+        const db = await getDatabase()
+        const client = await db.getClientByUserId(userId)
+
+        if (!client) {
+            return new NextResponse('Client profile not found', { status: 404 })
+        }
+
+        const activeCheckIn = await db.getActiveCheckIn(client.id)
+        if (!activeCheckIn) {
+            return new NextResponse('No active check-in found', { status: 404 })
+        }
+
+        const attendance = await db.checkOut(activeCheckIn.id)
+        return NextResponse.json(attendance)
+    } catch (error) {
+        console.error('Check-out error:', error)
+        return new NextResponse('Internal Server Error', { status: 500 })
+    }
+}
diff --git a/apps/admin/src/app/api/attendance/history/route.ts b/apps/admin/src/app/api/attendance/history/route.ts
new file mode 100644
index 0000000..14b276c
--- /dev/null
+++ b/apps/admin/src/app/api/attendance/history/route.ts
@@ -0,0 +1,44 @@
+import { auth } from '@clerk/nextjs/server'
+import { NextResponse } from 'next/server'
+import { getDatabase } from '@/lib/database'
+import { ensureUserSynced } from '@/lib/sync-user'
+
+export async function GET(req: Request) {
+    console.log('GET /api/attendance/history called')
+    console.log('Headers:', Object.fromEntries(req.headers.entries()))
+
+    try {
+        const authResult = await auth()
+        const { userId } = authResult
+        console.log('Auth result:', JSON.stringify(authResult, null, 2))
+
+        if (!userId) {
+            console.log('No userId found in auth result')
+            return new NextResponse('Unauthorized', { status: 401 })
+        }
+
+        const db = await getDatabase()
+
+        // Ensure user exists in DB (sync from Clerk if needed)
+        await ensureUserSynced(userId, db)
+
+        let client = await db.getClientByUserId(userId)
+
+        if (!client) {
+            // Auto-create client profile if it doesn't exist
+            console.log('Client profile not found, creating new one for user:', userId)
+            client = await db.createClient({
+                userId,
+                membershipType: 'basic',
+                membershipStatus: 'active',
+                joinDate: new Date()
+            })
+        }
+
+        const history = await db.getAttendanceHistory(client.id)
+        return NextResponse.json(history)
+    } catch (error) {
+        console.error('History error:', error)
+        return new NextResponse('Internal Server Error', { status: 500 })
+    }
+}
diff --git a/apps/admin/src/app/api/health/route.ts b/apps/admin/src/app/api/health/route.ts
new file mode 100644
index 0000000..13118c4
--- /dev/null
+++ b/apps/admin/src/app/api/health/route.ts
@@ -0,0 +1,5 @@
+import { NextResponse } from 'next/server'
+
+export async function GET() {
+    return NextResponse.json({ status: 'ok', timestamp: new Date().toISOString() })
+}
diff --git a/apps/admin/src/app/attendance/page.tsx b/apps/admin/src/app/attendance/page.tsx
new file mode 100644
index 0000000..960aeba
--- /dev/null
+++ b/apps/admin/src/app/attendance/page.tsx
@@ -0,0 +1,96 @@
+'use client'
+
+import { useState, useEffect } from 'react'
+import { format } from 'date-fns'
+
+interface Attendance {
+    id: string
+    clientId: string
+    checkInTime: string
+    checkOutTime?: string
+    type: string
+    notes?: string
+}
+
+export default function AttendancePage() {
+    const [attendance, setAttendance] = useState<Attendance[]>([])
+    const [loading, setLoading] = useState(true)
+
+    useEffect(() => {
+        const fetchAttendance = async () => {
+            try {
+                const res = await fetch('/api/admin/attendance')
+                if (res.ok) {
+                    const data = await res.json()
+                    setAttendance(data)
+                }
+            } catch (error) {
+                console.error('Error fetching attendance:', error)
+            } finally {
+                setLoading(false)
+            }
+        }
+
+        fetchAttendance()
+    }, [])
+
+    if (loading) {
+        return <div className="p-8">Loading...</div>
+    }
+
+    return (
+        <div className="p-8">
+            <h1 className="text-2xl font-bold mb-6">Attendance Monitoring</h1>
+
+            <div className="bg-white rounded-lg shadow overflow-hidden">
+                <table className="min-w-full divide-y divide-gray-200">
+                    <thead className="bg-gray-50">
+                        <tr>
+                            <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                                Client ID
+                            </th>
+                            <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                                Type
+                            </th>
+                            <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                                Check In
+                            </th>
+                            <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                                Check Out
+                            </th>
+                            <th className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
+                                Status
+                            </th>
+                        </tr>
+                    </thead>
+                    <tbody className="bg-white divide-y divide-gray-200">
+                        {attendance.map((record) => (
+                            <tr key={record.id}>
+                                <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-900">
+                                    {record.clientId}
+                                </td>
+                                <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500 capitalize">
+                                    {record.type}
+                                </td>
+                                <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
+                                    {format(new Date(record.checkInTime), 'PP p')}
+                                </td>
+                                <td className="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
+                                    {record.checkOutTime ? format(new Date(record.checkOutTime), 'PP p') : '-'}
+                                </td>
+                                <td className="px-6 py-4 whitespace-nowrap">
+                                    <span className={`px-2 inline-flex text-xs leading-5 font-semibold rounded-full ${record.checkOutTime
+                                            ? 'bg-gray-100 text-gray-800'
+                                            : 'bg-green-100 text-green-800'
+                                        }`}>
+                                        {record.checkOutTime ? 'Completed' : 'Active'}
+                                    </span>
+                                </td>
+                            </tr>
+                        ))}
+                    </tbody>
+                </table>
+            </div>
+        </div>
+    )
+}
diff --git a/apps/admin/src/lib/database.ts b/apps/admin/src/lib/database.ts
deleted file mode 100644
index 4d88b05..0000000
--- a/apps/admin/src/lib/database.ts
+++ /dev/null
@@ -1,37 +0,0 @@
-export interface User {
-  id: string
-  email: string
-  firstName: string
-  lastName: string
-  password: string
-  phone?: string
-  role: 'admin' | 'client'
-  createdAt: Date
-  updatedAt: Date
-}
-
-export interface Client {
-  id: string
-  userId: string
-  membershipType: 'basic' | 'premium' | 'vip'
-  membershipStatus: 'active' | 'inactive' | 'expired'
-  joinDate: Date
-}
-
-export interface FitnessProfile {
-  userId: string
-  height: string
-  weight: string
-  age: string
-  gender: 'male' | 'female' | 'other'
-  activityLevel: 'sedentary' | 'light' | 'moderate' | 'active' | 'very_active'
-  fitnessGoals: string[]
-  exerciseHabits: string
-  dietHabits: string
-  medicalConditions: string
-}
-
-// In-memory database
-export const users: User[] = []
-export const clients: Client[] = []
-export const fitnessProfiles: FitnessProfile[] = []
\ No newline at end of file
diff --git a/apps/admin/src/lib/database/sqlite.ts b/apps/admin/src/lib/database/sqlite.ts
index c048ec9..b416180 100644
--- a/apps/admin/src/lib/database/sqlite.ts
+++ b/apps/admin/src/lib/database/sqlite.ts
@@ -1,7 +1,7 @@
 import Database from 'better-sqlite3'
 import path from 'path'
 import fs from 'fs'
-import { IDatabase, User, Client, FitnessProfile, DatabaseConfig } from './types'
+import { IDatabase, User, Client, FitnessProfile, Attendance, DatabaseConfig } from './types'
 
 export class SQLiteDatabase implements IDatabase {
   private db: Database.Database | null = null
@@ -14,21 +14,21 @@ export class SQLiteDatabase implements IDatabase {
   async connect(): Promise<void> {
     try {
       const dbPath = this.config.connection.filename || path.join(process.cwd(), 'data', 'fitai.db')
-      
+
       // Ensure data directory exists
       const dataDir = path.dirname(dbPath)
       if (!fs.existsSync(dataDir)) {
         fs.mkdirSync(dataDir, { recursive: true })
       }
-      
+
       this.db = new Database(dbPath)
-      
+
       // Enable foreign keys
       this.db.exec('PRAGMA foreign_keys = ON')
-      
+
       // Create tables
       await this.createTables()
-      
+
       if (this.config.options?.logging) {
         console.log('SQLite database connected successfully at:', dbPath)
       }
@@ -103,18 +103,37 @@ export class SQLiteDatabase implements IDatabase {
       CREATE INDEX IF NOT EXISTS idx_clients_userId ON clients(userId);
       CREATE INDEX IF NOT EXISTS idx_fitness_profiles_userId ON fitness_profiles(userId);
     `)
+
+    // Attendance table
+    this.db.exec(`
+      CREATE TABLE IF NOT EXISTS attendance (
+        id TEXT PRIMARY KEY,
+        clientId TEXT NOT NULL,
+        checkInTime DATETIME NOT NULL,
+        checkOutTime DATETIME,
+        type TEXT NOT NULL CHECK (type IN ('gym', 'class', 'personal_training')),
+        notes TEXT,
+        createdAt DATETIME NOT NULL,
+        FOREIGN KEY (clientId) REFERENCES clients (id) ON DELETE CASCADE
+      )
+    `)
+
+    this.db.exec(`
+      CREATE INDEX IF NOT EXISTS idx_attendance_clientId ON attendance(clientId);
+      CREATE INDEX IF NOT EXISTS idx_attendance_checkInTime ON attendance(checkInTime);
+    `)
   }
 
   // User operations
-  async createUser(userData: Omit<User, 'id' | 'createdAt' | 'updatedAt'>): Promise<User> {
+  async createUser(userData: Omit<User, 'createdAt' | 'updatedAt'>): Promise<User> {
     if (!this.db) throw new Error('Database not connected')
 
-    const id = Math.random().toString(36).substr(2, 9)
+    const id = userData.id || Math.random().toString(36).substr(2, 9)
     const now = new Date()
-    
+
     const user: User = {
-      id,
       ...userData,
+      id,
       createdAt: now,
       updatedAt: now
     }
@@ -123,9 +142,9 @@ export class SQLiteDatabase implements IDatabase {
       `INSERT INTO users (id, email, firstName, lastName, password, phone, role, createdAt, updatedAt)
        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`
     )
-    
+
     stmt.run(
-      user.id, user.email, user.firstName, user.lastName, user.password, 
+      user.id, user.email, user.firstName, user.lastName, user.password,
       user.phone, user.role, user.createdAt.toISOString(), user.updatedAt.toISOString()
     )
 
@@ -195,9 +214,9 @@ export class SQLiteDatabase implements IDatabase {
       `INSERT INTO clients (id, userId, membershipType, membershipStatus, joinDate)
        VALUES (?, ?, ?, ?, ?)`
     )
-    
+
     stmt.run(
-      client.id, client.userId, client.membershipType, 
+      client.id, client.userId, client.membershipType,
       client.membershipStatus, client.joinDate.toISOString()
     )
 
@@ -269,7 +288,7 @@ export class SQLiteDatabase implements IDatabase {
         exerciseHabits, dietHabits, medicalConditions, createdAt, updatedAt)
        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`
     )
-    
+
     stmt.run(
       profile.userId, profile.height, profile.weight, profile.age, profile.gender,
       profile.activityLevel, JSON.stringify(profile.fitnessGoals), profile.exerciseHabits,
@@ -325,6 +344,73 @@ export class SQLiteDatabase implements IDatabase {
     return (result.changes || 0) > 0
   }
 
+  // Attendance operations
+  async checkIn(clientId: string, type: 'gym' | 'class' | 'personal_training', notes?: string): Promise<Attendance> {
+    if (!this.db) throw new Error('Database not connected')
+
+    const id = Math.random().toString(36).substr(2, 9)
+    const now = new Date()
+
+    const attendance: Attendance = {
+      id,
+      clientId,
+      checkInTime: now,
+      type,
+      notes,
+      createdAt: now
+    }
+
+    const stmt = this.db.prepare(
+      `INSERT INTO attendance (id, clientId, checkInTime, type, notes, createdAt)
+       VALUES (?, ?, ?, ?, ?, ?)`
+    )
+
+    stmt.run(
+      attendance.id, attendance.clientId, attendance.checkInTime.toISOString(),
+      attendance.type, attendance.notes, attendance.createdAt.toISOString()
+    )
+
+    return attendance
+  }
+
+  async checkOut(attendanceId: string): Promise<Attendance | null> {
+    if (!this.db) throw new Error('Database not connected')
+
+    const now = new Date()
+    const stmt = this.db.prepare('UPDATE attendance SET checkOutTime = ? WHERE id = ?')
+    stmt.run(now.toISOString(), attendanceId)
+
+    return this.getAttendanceById(attendanceId)
+  }
+
+  async getAttendanceById(id: string): Promise<Attendance | null> {
+    if (!this.db) throw new Error('Database not connected')
+    const stmt = this.db.prepare('SELECT * FROM attendance WHERE id = ?')
+    const row = stmt.get(id)
+    return row ? this.mapRowToAttendance(row) : null
+  }
+
+  async getAttendanceHistory(clientId: string): Promise<Attendance[]> {
+    if (!this.db) throw new Error('Database not connected')
+    const stmt = this.db.prepare('SELECT * FROM attendance WHERE clientId = ? ORDER BY checkInTime DESC')
+    const rows = stmt.all(clientId)
+    return rows.map(row => this.mapRowToAttendance(row))
+  }
+
+  async getAllAttendance(): Promise<Attendance[]> {
+    if (!this.db) throw new Error('Database not connected')
+    const stmt = this.db.prepare('SELECT * FROM attendance ORDER BY checkInTime DESC')
+    const rows = stmt.all()
+    return rows.map(row => this.mapRowToAttendance(row))
+  }
+
+  async getActiveCheckIn(clientId: string): Promise<Attendance | null> {
+    if (!this.db) throw new Error('Database not connected')
+    const stmt = this.db.prepare('SELECT * FROM attendance WHERE clientId = ? AND checkOutTime IS NULL ORDER BY checkInTime DESC LIMIT 1')
+    const row = stmt.get(clientId)
+    return row ? this.mapRowToAttendance(row) : null
+  }
+
   // Helper methods to map database rows to entities
   private mapRowToUser(row: any): User {
     return {
@@ -366,4 +452,16 @@ export class SQLiteDatabase implements IDatabase {
       updatedAt: new Date(row.updatedAt)
     }
   }
+
+  private mapRowToAttendance(row: any): Attendance {
+    return {
+      id: row.id,
+      clientId: row.clientId,
+      checkInTime: new Date(row.checkInTime),
+      checkOutTime: row.checkOutTime ? new Date(row.checkOutTime) : undefined,
+      type: row.type,
+      notes: row.notes,
+      createdAt: new Date(row.createdAt)
+    }
+  }
 }
\ No newline at end of file
diff --git a/apps/admin/src/lib/database/types.ts b/apps/admin/src/lib/database/types.ts
index f6127e7..d8e7bf2 100644
--- a/apps/admin/src/lib/database/types.ts
+++ b/apps/admin/src/lib/database/types.ts
@@ -34,6 +34,16 @@ export interface FitnessProfile {
   updatedAt: Date;
 }
 
+export interface Attendance {
+  id: string;
+  clientId: string;
+  checkInTime: Date;
+  checkOutTime?: Date;
+  type: "gym" | "class" | "personal_training";
+  notes?: string;
+  createdAt: Date;
+}
+
 // Database Interface - allows us to swap implementations
 export interface IDatabase {
   // Connection management
@@ -41,7 +51,7 @@ export interface IDatabase {
   disconnect(): Promise<void>;
 
   // User operations
-  createUser(user: Omit<User, "id" | "createdAt" | "updatedAt">): Promise<User>;
+  createUser(user: Omit<User, "createdAt" | "updatedAt">): Promise<User>;
   getUserById(id: string): Promise<User | null>;
   getUserByEmail(email: string): Promise<User | null>;
   getAllUsers(): Promise<User[]>;
@@ -67,6 +77,17 @@ export interface IDatabase {
     updates: Partial<FitnessProfile>,
   ): Promise<FitnessProfile | null>;
   deleteFitnessProfile(userId: string): Promise<boolean>;
+
+  // Attendance operations
+  checkIn(
+    clientId: string,
+    type: "gym" | "class" | "personal_training",
+    notes?: string,
+  ): Promise<Attendance>;
+  checkOut(attendanceId: string): Promise<Attendance | null>;
+  getAttendanceHistory(clientId: string): Promise<Attendance[]>;
+  getAllAttendance(): Promise<Attendance[]>;
+  getActiveCheckIn(clientId: string): Promise<Attendance | null>;
 }
 
 // Database configuration
diff --git a/apps/admin/src/lib/sync-user.ts b/apps/admin/src/lib/sync-user.ts
new file mode 100644
index 0000000..abdc240
--- /dev/null
+++ b/apps/admin/src/lib/sync-user.ts
@@ -0,0 +1,29 @@
+import { currentUser } from '@clerk/nextjs/server'
+import { IDatabase } from './database/types'
+
+export async function ensureUserSynced(userId: string, db: IDatabase) {
+    const existingUser = await db.getUserById(userId)
+    if (existingUser) return existingUser
+
+    console.log('User not found in DB, syncing from Clerk:', userId)
+    const clerkUser = await currentUser()
+
+    if (!clerkUser || clerkUser.id !== userId) {
+        throw new Error('Could not fetch Clerk user details')
+    }
+
+    const email = clerkUser.emailAddresses[0]?.emailAddress
+    if (!email) throw new Error('User has no email')
+
+    const user = await db.createUser({
+        id: userId,
+        email,
+        firstName: clerkUser.firstName || '',
+        lastName: clerkUser.lastName || '',
+        password: '', // Managed by Clerk
+        phone: clerkUser.phoneNumbers[0]?.phoneNumber || undefined,
+        role: (clerkUser.publicMetadata.role as 'admin' | 'client') || 'client'
+    })
+
+    return user
+}
diff --git a/apps/admin/src/middleware.ts b/apps/admin/src/middleware.ts
index c237e2b..0ae9460 100644
--- a/apps/admin/src/middleware.ts
+++ b/apps/admin/src/middleware.ts
@@ -5,6 +5,7 @@ const isPublicRoute = createRouteMatcher([
   "/sign-in(.*)",
   "/sign-up(.*)",
   "/api/webhooks(.*)",
+  "/api/attendance(.*)",
 ]);
 
 // Define routes that require authentication
@@ -16,7 +17,6 @@ const isProtectedRoute = createRouteMatcher([
   "/api/users(.*)",
   "/api/profile(.*)",
   "/api/payments(.*)",
-  "/api/attendance(.*)",
   "/api/notifications(.*)",
 ]);
 
diff --git a/apps/mobile/src/api/fitnessProfile.ts b/apps/mobile/src/api/fitnessProfile.ts
index 164c88a..e535e17 100644
--- a/apps/mobile/src/api/fitnessProfile.ts
+++ b/apps/mobile/src/api/fitnessProfile.ts
@@ -1,11 +1,5 @@
 import axios from "axios";
-import { Platform } from "react-native";
-
-const API_BASE_URL = Platform.select({
-  android: "http://10.0.2.2:3000", // Android emulator maps this to host's localhost
-  ios: "http://localhost:3000",
-  default: process.env.EXPO_PUBLIC_API_URL || "http://localhost:3000",
-});
+import { API_BASE_URL } from "../config/api";
 
 export interface FitnessProfile {
   id?: string;
diff --git a/apps/mobile/src/app/(tabs)/attendance.tsx b/apps/mobile/src/app/(tabs)/attendance.tsx
index 9a69de2..bab1650 100644
--- a/apps/mobile/src/app/(tabs)/attendance.tsx
+++ b/apps/mobile/src/app/(tabs)/attendance.tsx
@@ -1,28 +1,244 @@
-import { View, Text, StyleSheet } from 'react-native'
+import { View, Text, StyleSheet, TouchableOpacity, ActivityIndicator, ScrollView, Alert } from 'react-native'
+import { useState, useEffect } from 'react'
+import { useAuth } from '@clerk/clerk-expo'
+import axios from 'axios'
+import { API_BASE_URL, API_ENDPOINTS } from '../../config/api'
+
+interface Attendance {
+  id: string
+  checkInTime: string
+  checkOutTime?: string
+  type: string
+  notes?: string
+}
 
 export default function AttendanceScreen() {
+  const { getToken, userId } = useAuth()
+  const [loading, setLoading] = useState(true)
+  const [activeCheckIn, setActiveCheckIn] = useState<Attendance | null>(null)
+  const [history, setHistory] = useState<Attendance[]>([])
+
+  const fetchAttendance = async () => {
+    try {
+      setLoading(true)
+      const token = await getToken()
+      const url = `${API_BASE_URL}${API_ENDPOINTS.ATTENDANCE.HISTORY}`
+      console.log('Fetching attendance from:', url)
+      const response = await axios.get(url, {
+        headers: { Authorization: `Bearer ${token}` }
+      })
+
+      const data: Attendance[] = response.data
+      setHistory(data)
+
+      // Check if there's an active check-in (latest one has no checkOutTime)
+      if (data.length > 0 && !data[0].checkOutTime) {
+        setActiveCheckIn(data[0])
+      } else {
+        setActiveCheckIn(null)
+      }
+    } catch (error) {
+      console.error('Error fetching attendance:', error)
+      Alert.alert('Error', 'Failed to load attendance data')
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  useEffect(() => {
+    fetchAttendance()
+  }, [])
+
+  const handleCheckIn = async () => {
+    try {
+      const token = await getToken()
+      await axios.post(
+        `${API_BASE_URL}${API_ENDPOINTS.ATTENDANCE.CHECK_IN}`,
+        { type: 'gym' },
+        { headers: { Authorization: `Bearer ${token}` } }
+      )
+      fetchAttendance()
+      Alert.alert('Success', 'Checked in successfully!')
+    } catch (error: any) {
+      console.error('Check-in error:', error)
+      Alert.alert('Error', error.response?.data || 'Failed to check in')
+    }
+  }
+
+  const handleCheckOut = async () => {
+    try {
+      const token = await getToken()
+      await axios.post(
+        `${API_BASE_URL}${API_ENDPOINTS.ATTENDANCE.CHECK_OUT}`,
+        {},
+        { headers: { Authorization: `Bearer ${token}` } }
+      )
+      fetchAttendance()
+      Alert.alert('Success', 'Checked out successfully!')
+    } catch (error: any) {
+      console.error('Check-out error:', error)
+      Alert.alert('Error', error.response?.data || 'Failed to check out')
+    }
+  }
+
+  if (loading && !history.length) {
+    return (
+      <View style={styles.centered}>
+        <ActivityIndicator size="large" color="#000" />
+      </View>
+    )
+  }
+
   return (
-    <View style={styles.container}>
+    <ScrollView style={styles.container} contentContainerStyle={styles.content}>
       <Text style={styles.title}>Attendance</Text>
       <Text style={styles.subtitle}>Track your gym visits</Text>
-    </View>
+
+      <View style={styles.actionContainer}>
+        {activeCheckIn ? (
+          <View style={styles.activeCard}>
+            <Text style={styles.activeText}>Currently Checked In</Text>
+            <Text style={styles.timeText}>
+              Since {new Date(activeCheckIn.checkInTime).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
+            </Text>
+            <TouchableOpacity style={styles.checkOutButton} onPress={handleCheckOut}>
+              <Text style={styles.buttonText}>Check Out</Text>
+            </TouchableOpacity>
+          </View>
+        ) : (
+          <TouchableOpacity style={styles.checkInButton} onPress={handleCheckIn}>
+            <Text style={styles.buttonText}>Check In</Text>
+          </TouchableOpacity>
+        )}
+      </View>
+
+      <Text style={styles.sectionTitle}>Recent History</Text>
+      {history.map((item) => (
+        <View key={item.id} style={styles.historyItem}>
+          <View>
+            <Text style={styles.dateText}>
+              {new Date(item.checkInTime).toLocaleDateString()}
+            </Text>
+            <Text style={styles.typeText}>{item.type.toUpperCase()}</Text>
+          </View>
+          <View style={styles.timeContainer}>
+            <Text style={styles.historyTime}>
+              In: {new Date(item.checkInTime).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
+            </Text>
+            {item.checkOutTime && (
+              <Text style={styles.historyTime}>
+                Out: {new Date(item.checkOutTime).toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' })}
+              </Text>
+            )}
+          </View>
+        </View>
+      ))}
+    </ScrollView>
   )
 }
 
 const styles = StyleSheet.create({
   container: {
     flex: 1,
-    justifyContent: 'center',
-    alignItems: 'center',
     backgroundColor: '#f5f5f5',
   },
+  content: {
+    padding: 20,
+  },
+  centered: {
+    flex: 1,
+    justifyContent: 'center',
+    alignItems: 'center',
+  },
   title: {
-    fontSize: 24,
+    fontSize: 28,
     fontWeight: 'bold',
-    marginBottom: 8,
+    marginBottom: 4,
+    color: '#1a1a1a',
   },
   subtitle: {
     fontSize: 16,
     color: '#666',
+    marginBottom: 24,
+  },
+  actionContainer: {
+    marginBottom: 32,
+  },
+  checkInButton: {
+    backgroundColor: '#000',
+    paddingVertical: 16,
+    borderRadius: 12,
+    alignItems: 'center',
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 2 },
+    shadowOpacity: 0.1,
+    shadowRadius: 4,
+    elevation: 3,
+  },
+  checkOutButton: {
+    backgroundColor: '#ff3b30',
+    paddingVertical: 16,
+    borderRadius: 12,
+    alignItems: 'center',
+    marginTop: 16,
+  },
+  buttonText: {
+    color: '#fff',
+    fontSize: 18,
+    fontWeight: '600',
+  },
+  activeCard: {
+    backgroundColor: '#fff',
+    padding: 20,
+    borderRadius: 16,
+    borderWidth: 1,
+    borderColor: '#e0e0e0',
+  },
+  activeText: {
+    fontSize: 18,
+    fontWeight: '600',
+    color: '#2e7d32',
+    marginBottom: 4,
+  },
+  timeText: {
+    fontSize: 14,
+    color: '#666',
+  },
+  sectionTitle: {
+    fontSize: 20,
+    fontWeight: '600',
+    marginBottom: 16,
+    color: '#1a1a1a',
+  },
+  historyItem: {
+    backgroundColor: '#fff',
+    padding: 16,
+    borderRadius: 12,
+    marginBottom: 12,
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+    alignItems: 'center',
+    shadowColor: '#000',
+    shadowOffset: { width: 0, height: 1 },
+    shadowOpacity: 0.05,
+    shadowRadius: 2,
+    elevation: 2,
+  },
+  dateText: {
+    fontSize: 16,
+    fontWeight: '500',
+    color: '#1a1a1a',
+  },
+  typeText: {
+    fontSize: 12,
+    color: '#666',
+    marginTop: 2,
+  },
+  timeContainer: {
+    alignItems: 'flex-end',
+  },
+  historyTime: {
+    fontSize: 14,
+    color: '#444',
   },
 })
\ No newline at end of file
diff --git a/apps/mobile/src/config/api.ts b/apps/mobile/src/config/api.ts
index 45937d6..0ecc78c 100644
--- a/apps/mobile/src/config/api.ts
+++ b/apps/mobile/src/config/api.ts
@@ -1,5 +1,5 @@
-export const API_BASE_URL = __DEV__ 
-  ? 'http://192.168.1.24:3000' 
+export const API_BASE_URL = __DEV__
+  ? 'https://5cb23f31d8c1.ngrok-free.app'
   : 'https://your-production-url.com'
 
 export const API_ENDPOINTS = {
@@ -12,4 +12,9 @@ export const API_ENDPOINTS = {
   },
   CLIENTS: '/api/clients',
   USERS: '/api/users',
+  ATTENDANCE: {
+    CHECK_IN: '/api/attendance/check-in',
+    CHECK_OUT: '/api/attendance/check-out',
+    HISTORY: '/api/attendance/history',
+  },
 }
\ No newline at end of file
diff --git a/apps/mobile/tsconfig.json b/apps/mobile/tsconfig.json
index 9dc08d8..a0c1326 100644
--- a/apps/mobile/tsconfig.json
+++ b/apps/mobile/tsconfig.json
@@ -8,7 +8,7 @@
     "lib": [
       "es2017"
     ],
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "noEmit": true,
     "strict": true,
     "target": "esnext",
@@ -35,4 +35,4 @@
     "jest.config.js"
   ],
   "extends": "expo/tsconfig.base"
-}
+}
\ No newline at end of file