diff --git a/apps/admin/src/app/api/users/route.ts b/apps/admin/src/app/api/users/route.ts
index 9cd102e..85babd7 100644
--- a/apps/admin/src/app/api/users/route.ts
+++ b/apps/admin/src/app/api/users/route.ts
@@ -20,23 +20,50 @@ export async function GET(request: NextRequest) {
         const { password: _, ...userWithoutPassword } = user;
         const client = await db.getClientByUserId(user.id);
 
-        // Get active check-in status
+        // Get active check-in status and statistics for ALL users
         let isCheckedIn = false;
         let checkInTime = null;
+        let lastCheckInTime = null;
+        let checkInsThisWeek = 0;
+        let checkInsThisMonth = 0;
 
-        if (client) {
-          const activeCheckIn = await db.getActiveCheckIn(client.id);
-          if (activeCheckIn) {
-            isCheckedIn = true;
-            checkInTime = activeCheckIn.checkInTime;
-          }
+        // Query attendance by userId (works for all user types now)
+        const activeCheckIn = await db.getActiveCheckIn(user.id);
+        if (activeCheckIn) {
+          isCheckedIn = true;
+          checkInTime = activeCheckIn.checkInTime;
+        }
+
+        // Get attendance history for statistics
+        const attendanceHistory = await db.getAttendanceHistory(user.id);
+
+        if (attendanceHistory.length > 0) {
+          // Last check-in is the most recent attendance record
+          lastCheckInTime = attendanceHistory[0].checkInTime;
+
+          // Calculate check-ins in last 7 days
+          const weekAgo = new Date();
+          weekAgo.setDate(weekAgo.getDate() - 7);
+          checkInsThisWeek = attendanceHistory.filter(
+            a => new Date(a.checkInTime) >= weekAgo
+          ).length;
+
+          // Calculate check-ins in last 30 days
+          const monthAgo = new Date();
+          monthAgo.setDate(monthAgo.getDate() - 30);
+          checkInsThisMonth = attendanceHistory.filter(
+            a => new Date(a.checkInTime) >= monthAgo
+          ).length;
         }
 
         return {
           ...userWithoutPassword,
           client,
           isCheckedIn,
-          checkInTime
+          checkInTime,
+          lastCheckInTime,
+          checkInsThisWeek,
+          checkInsThisMonth
         };
       }),
     );
diff --git a/apps/admin/src/components/users/UserManagement.tsx b/apps/admin/src/components/users/UserManagement.tsx
index cbd0203..b1b9da8 100644
--- a/apps/admin/src/components/users/UserManagement.tsx
+++ b/apps/admin/src/components/users/UserManagement.tsx
@@ -15,6 +15,9 @@ interface User {
   createdAt: Date;
   isCheckedIn?: boolean;
   checkInTime?: Date;
+  lastCheckInTime?: Date;
+  checkInsThisWeek?: number;
+  checkInsThisMonth?: number;
   client?: {
     id: string;
     membershipType: string;
@@ -446,7 +449,7 @@ export function UserManagement() {
             </a>
           </CardHeader>
           <CardContent>
-            <div className="grid grid-cols-2 gap-4">
+            <div className="grid grid-cols-3 gap-4">
               <div>
                 <h4 className="font-medium mb-2">Basic Information</h4>
                 <div className="space-y-1 text-sm">
@@ -502,6 +505,30 @@ export function UserManagement() {
                   </div>
                 </div>
               )}
+
+              {selectedUser.client && (
+                <div>
+                  <h4 className="font-medium mb-2">Check-In Statistics</h4>
+                  <div className="space-y-1 text-sm">
+                    <p>
+                      <span className="font-medium">Last Check-In:</span>{" "}
+                      {selectedUser.lastCheckInTime
+                        ? new Date(
+                          selectedUser.lastCheckInTime,
+                        ).toLocaleString()
+                        : "Never"}
+                    </p>
+                    <p>
+                      <span className="font-medium">This Week:</span>{" "}
+                      {selectedUser.checkInsThisWeek || 0} check-ins
+                    </p>
+                    <p>
+                      <span className="font-medium">This Month:</span>{" "}
+                      {selectedUser.checkInsThisMonth || 0} check-ins
+                    </p>
+                  </div>
+                </div>
+              )}
             </div>
           </CardContent>
         </Card>
diff --git a/apps/admin/src/lib/database/sqlite.ts b/apps/admin/src/lib/database/sqlite.ts
index 06cc9ae..efc681f 100644
--- a/apps/admin/src/lib/database/sqlite.ts
+++ b/apps/admin/src/lib/database/sqlite.ts
@@ -106,19 +106,61 @@ export class SQLiteDatabase implements IDatabase {
       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
-      )
-    `)
+    // Attendance table migration: change from clientId to userId
+    // Check if old table exists and migrate
+    const tableInfo = this.db.prepare("SELECT name FROM sqlite_master WHERE type='table' AND name='attendance'").get() as any;
+
+    if (tableInfo) {
+      // Check if table has clientId column (old schema)
+      const columns = this.db.prepare("PRAGMA table_info(attendance)").all() as any[];
+      const hasClientId = columns.some((col: any) => col.name === 'clientId');
+
+      if (hasClientId) {
+        console.log('Migrating attendance table from clientId to userId...');
+
+        // Create new table with userId
+        this.db.exec(`
+          CREATE TABLE IF NOT EXISTS attendance_new (
+            id TEXT PRIMARY KEY,
+            userId 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 (userId) REFERENCES users (id) ON DELETE CASCADE
+          )
+        `);
+
+        // Migrate data: map clientId to userId via clients table
+        this.db.exec(`
+          INSERT INTO attendance_new (id, userId, checkInTime, checkOutTime, type, notes, createdAt)
+          SELECT a.id, c.userId, a.checkInTime, a.checkOutTime, a.type, a.notes, a.createdAt
+          FROM attendance a
+          JOIN clients c ON a.clientId = c.id
+        `);
+
+        // Drop old table and rename new one
+        this.db.exec(`DROP TABLE attendance`);
+        this.db.exec(`ALTER TABLE attendance_new RENAME TO attendance`);
+
+        console.log('Attendance table migration completed');
+      }
+    } else {
+      // Create new attendance table with userId
+      this.db.exec(`
+        CREATE TABLE IF NOT EXISTS attendance (
+          id TEXT PRIMARY KEY,
+          userId 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 (userId) REFERENCES users (id) ON DELETE CASCADE
+        )
+      `);
+    }
 
     // Recommendations table
     // Removed DROP TABLE to persist data. Schema is now stable.
@@ -140,16 +182,16 @@ export class SQLiteDatabase implements IDatabase {
         FOREIGN KEY (userId) REFERENCES users (id) ON DELETE CASCADE,
         FOREIGN KEY (fitnessProfileId) REFERENCES fitness_profiles (userId)
       )
-    `)
+    `);
 
     this.db.exec(`
       CREATE INDEX IF NOT EXISTS idx_recommendations_userId ON recommendations(userId);
-    `)
+    `);
 
     this.db.exec(`
-      CREATE INDEX IF NOT EXISTS idx_attendance_clientId ON attendance(clientId);
+      CREATE INDEX IF NOT EXISTS idx_attendance_userId ON attendance(userId);
       CREATE INDEX IF NOT EXISTS idx_attendance_checkInTime ON attendance(checkInTime);
-    `)
+    `);
   }
 
   // User operations
@@ -389,7 +431,7 @@ export class SQLiteDatabase implements IDatabase {
   }
 
   // Attendance operations
-  async checkIn(clientId: string, type: 'gym' | 'class' | 'personal_training', notes?: string): Promise<Attendance> {
+  async checkIn(userId: 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)
@@ -397,7 +439,7 @@ export class SQLiteDatabase implements IDatabase {
 
     const attendance: Attendance = {
       id,
-      clientId,
+      userId,
       checkInTime: now,
       type,
       notes,
@@ -405,20 +447,23 @@ export class SQLiteDatabase implements IDatabase {
     }
 
     const stmt = this.db.prepare(
-      `INSERT INTO attendance(id, clientId, checkInTime, type, notes, createdAt)
+      `INSERT INTO attendance(id, userId, checkInTime, type, notes, createdAt)
     VALUES(?, ?, ?, ?, ?, ?)`
     )
 
     stmt.run(
-      attendance.id, attendance.clientId, attendance.checkInTime.toISOString(),
+      attendance.id, attendance.userId, attendance.checkInTime.toISOString(),
       attendance.type, attendance.notes, attendance.createdAt.toISOString()
     )
 
-    // Update client last visit
-    this.db.prepare('UPDATE clients SET lastVisit = ? WHERE id = ?').run(
-      now.toISOString(),
-      clientId
-    )
+    // Update client last visit if user is a client
+    const client = await this.getClientByUserId(userId);
+    if (client) {
+      this.db.prepare('UPDATE clients SET lastVisit = ? WHERE id = ?').run(
+        now.toISOString(),
+        client.id
+      );
+    }
 
     return attendance
   }
@@ -440,10 +485,10 @@ export class SQLiteDatabase implements IDatabase {
     return row ? this.mapRowToAttendance(row) : null
   }
 
-  async getAttendanceHistory(clientId: string): Promise<Attendance[]> {
+  async getAttendanceHistory(userId: 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)
+    const stmt = this.db.prepare('SELECT * FROM attendance WHERE userId = ? ORDER BY checkInTime DESC')
+    const rows = stmt.all(userId)
     return rows.map(row => this.mapRowToAttendance(row))
   }
 
@@ -454,10 +499,10 @@ export class SQLiteDatabase implements IDatabase {
     return rows.map(row => this.mapRowToAttendance(row))
   }
 
-  async getActiveCheckIn(clientId: string): Promise<Attendance | null> {
+  async getActiveCheckIn(userId: 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)
+    const stmt = this.db.prepare('SELECT * FROM attendance WHERE userId = ? AND checkOutTime IS NULL ORDER BY checkInTime DESC LIMIT 1')
+    const row = stmt.get(userId)
     return row ? this.mapRowToAttendance(row) : null
   }
 
@@ -509,7 +554,7 @@ export class SQLiteDatabase implements IDatabase {
   private mapRowToAttendance(row: any): Attendance {
     return {
       id: row.id,
-      clientId: row.clientId,
+      userId: row.userId,
       checkInTime: new Date(row.checkInTime),
       checkOutTime: row.checkOutTime ? new Date(row.checkOutTime) : undefined,
       type: row.type,
diff --git a/apps/admin/src/lib/database/types.ts b/apps/admin/src/lib/database/types.ts
index 608ee65..6296d4f 100644
--- a/apps/admin/src/lib/database/types.ts
+++ b/apps/admin/src/lib/database/types.ts
@@ -39,7 +39,7 @@ export interface FitnessProfile {
 
 export interface Attendance {
   id: string;
-  clientId: string;
+  userId: string;
   checkInTime: Date;
   checkOutTime?: Date;
   type: "gym" | "class" | "personal_training";
@@ -121,14 +121,14 @@ export interface IDatabase {
 
   // Attendance operations
   checkIn(
-    clientId: string,
+    userId: string,
     type: "gym" | "class" | "personal_training",
     notes?: string,
   ): Promise<Attendance>;
   checkOut(attendanceId: string): Promise<Attendance | null>;
-  getAttendanceHistory(clientId: string): Promise<Attendance[]>;
+  getAttendanceHistory(userId: string): Promise<Attendance[]>;
   getAllAttendance(): Promise<Attendance[]>;
-  getActiveCheckIn(clientId: string): Promise<Attendance | null>;
+  getActiveCheckIn(userId: string): Promise<Attendance | null>;
 
   // Recommendation operations
   createRecommendation(