diff --git a/apps/mobile/package-lock.json b/apps/mobile/package-lock.json
index 99b42d8..300aca9 100644
--- a/apps/mobile/package-lock.json
+++ b/apps/mobile/package-lock.json
@@ -28,6 +28,7 @@
         "expo-haptics": "^15.0.7",
         "expo-linear-gradient": "~15.0.7",
         "expo-linking": "~8.0.0",
+        "expo-location": "~17.0.1",
         "expo-notifications": "~0.32.0",
         "expo-router": "~6.0.14",
         "expo-secure-store": "~15.0.7",
@@ -7329,6 +7330,15 @@
         "react-native": "*"
       }
     },
+    "node_modules/expo-location": {
+      "version": "17.0.1",
+      "resolved": "https://registry.npmjs.org/expo-location/-/expo-location-17.0.1.tgz",
+      "integrity": "sha512-m+OzotzlAXO3ZZ1uqW5GC25nXW868zN+ROyBA1V4VF6jGay1ZEs4URPglCVUDzZby2F5wt24cMzqDKw2IX6nRw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "expo": "*"
+      }
+    },
     "node_modules/expo-modules-autolinking": {
       "version": "3.0.22",
       "resolved": "https://registry.npmjs.org/expo-modules-autolinking/-/expo-modules-autolinking-3.0.22.tgz",
diff --git a/apps/mobile/package.json b/apps/mobile/package.json
index b485e96..fdc7654 100644
--- a/apps/mobile/package.json
+++ b/apps/mobile/package.json
@@ -34,6 +34,7 @@
     "expo-haptics": "^15.0.7",
     "expo-linear-gradient": "~15.0.7",
     "expo-linking": "~8.0.0",
+    "expo-location": "~17.0.1",
     "expo-notifications": "~0.32.0",
     "expo-router": "~6.0.14",
     "expo-secure-store": "~15.0.7",
diff --git a/apps/mobile/src/app/(tabs)/attendance.tsx b/apps/mobile/src/app/(tabs)/attendance.tsx
index 8ff1ebe..d069810 100644
--- a/apps/mobile/src/app/(tabs)/attendance.tsx
+++ b/apps/mobile/src/app/(tabs)/attendance.tsx
@@ -6,6 +6,7 @@ import { Ionicons } from '@expo/vector-icons'
 import { attendanceApi, Attendance } from '../../api/attendance'
 import { theme } from '../../styles/theme'
 import { Animated } from 'react-native'
+import { GeofenceStatus } from '../../components/GeofenceStatus'
 
 export default function AttendanceScreen() {
   const { getToken, userId } = useAuth()
@@ -111,6 +112,9 @@ export default function AttendanceScreen() {
         <Text style={styles.subtitle}>Track your gym visits</Text>
       </LinearGradient>
 
+      {/* Geofencing Status Card */}
+      <GeofenceStatus />
+
       <View style={styles.actionContainer}>
         {activeCheckIn ? (
           <LinearGradient
diff --git a/apps/mobile/src/components/GeofenceStatus.tsx b/apps/mobile/src/components/GeofenceStatus.tsx
new file mode 100644
index 0000000..8c23cb0
--- /dev/null
+++ b/apps/mobile/src/components/GeofenceStatus.tsx
@@ -0,0 +1,198 @@
+import { View, Text, StyleSheet, TouchableOpacity, ActivityIndicator } from 'react-native'
+import { useState, useEffect } from 'react'
+import { LinearGradient } from 'expo-linear-gradient'
+import { Ionicons } from '@expo/vector-icons'
+import * as Location from 'expo-location'
+import { theme } from '../styles/theme'
+import { isWithinGeofence, calculateDistance, getFormattedDistance, GYM_LOCATION } from '../services/geofencing'
+
+export interface GeofenceStatusProps {
+  onStatusChange?: (isInside: boolean) => void
+}
+
+export const GeofenceStatus = ({ onStatusChange }: GeofenceStatusProps) => {
+  const [loading, setLoading] = useState(false)
+  const [isInside, setIsInside] = useState(false)
+  const [distance, setDistance] = useState<string>('--')
+  const [permission, setPermission] = useState<string>('undetermined')
+  const [lastCheck, setLastCheck] = useState<Date | null>(null)
+
+  const checkGeofence = async () => {
+    try {
+      setLoading(true)
+
+      // Request location permission
+      const { status } = await Location.requestForegroundPermissionsAsync()
+      setPermission(status)
+
+      if (status !== 'granted') {
+        setLoading(false)
+        return
+      }
+
+      // Get current location
+      const location = await Location.getCurrentPositionAsync({
+        accuracy: Location.Accuracy.Balanced,
+      })
+
+      const { latitude, longitude } = location.coords
+
+      // Check if within geofence
+      const within = isWithinGeofence(latitude, longitude, 500)
+      setIsInside(within)
+      onStatusChange?.(within)
+
+      // Calculate distance
+      const dist = calculateDistance(
+        latitude,
+        longitude,
+        GYM_LOCATION.latitude,
+        GYM_LOCATION.longitude
+      )
+      setDistance(getFormattedDistance(dist))
+      setLastCheck(new Date())
+    } catch (error) {
+      console.error('Geofence check error:', error)
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  useEffect(() => {
+    checkGeofence()
+    // Auto-check every 30 seconds
+    const interval = setInterval(checkGeofence, 30000)
+    return () => clearInterval(interval)
+  }, [])
+
+  return (
+    <View style={styles.container}>
+      <LinearGradient
+        colors={
+          isInside
+            ? ['#10b981', '#6ee7b7', '#a7f3d0']
+            : ['#64748b', '#94a3b8', '#cbd5e1']
+        }
+        start={{ x: 0, y: 0 }}
+        end={{ x: 1, y: 1 }}
+        style={styles.card}
+      >
+        <View style={styles.header}>
+          <View style={styles.titleRow}>
+            <Ionicons
+              name={isInside ? 'location-sharp' : 'location'}
+              size={24}
+              color="#fff"
+            />
+            <Text style={styles.title}>
+              {isInside ? 'At Gym' : 'Away from Gym'}
+            </Text>
+          </View>
+          <TouchableOpacity
+            onPress={checkGeofence}
+            disabled={loading}
+            style={styles.refreshButton}
+          >
+            {loading ? (
+              <ActivityIndicator size="small" color="#fff" />
+            ) : (
+              <Ionicons name="refresh" size={20} color="#fff" />
+            )}
+          </TouchableOpacity>
+        </View>
+
+        <View style={styles.content}>
+          <View style={styles.stat}>
+            <Text style={styles.statLabel}>Distance</Text>
+            <Text style={styles.statValue}>{distance}</Text>
+          </View>
+
+          {lastCheck && (
+            <Text style={styles.lastCheck}>
+              Last check: {lastCheck.toLocaleTimeString()}
+            </Text>
+          )}
+        </View>
+
+        {permission !== 'granted' && (
+          <View style={styles.permissionAlert}>
+            <Ionicons name="alert-circle" size={16} color="#fff" />
+            <Text style={styles.permissionText}>
+              Location permission required
+            </Text>
+          </View>
+        )}
+      </LinearGradient>
+    </View>
+  )
+}
+
+const styles = StyleSheet.create({
+  container: {
+    paddingHorizontal: 16,
+    paddingVertical: 12,
+  },
+  card: {
+    borderRadius: 16,
+    padding: 16,
+    overflow: 'hidden',
+  },
+  header: {
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+    alignItems: 'center',
+    marginBottom: 12,
+  },
+  titleRow: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: 12,
+  },
+  title: {
+    fontSize: 18,
+    fontWeight: '600',
+    color: '#fff',
+  },
+  refreshButton: {
+    padding: 8,
+    borderRadius: 8,
+    backgroundColor: 'rgba(255, 255, 255, 0.2)',
+  },
+  content: {
+    gap: 12,
+  },
+  stat: {
+    flexDirection: 'row',
+    justifyContent: 'space-between',
+    alignItems: 'center',
+  },
+  statLabel: {
+    fontSize: 14,
+    color: 'rgba(255, 255, 255, 0.8)',
+    fontWeight: '500',
+  },
+  statValue: {
+    fontSize: 16,
+    fontWeight: '600',
+    color: '#fff',
+  },
+  lastCheck: {
+    fontSize: 12,
+    color: 'rgba(255, 255, 255, 0.7)',
+    marginTop: 4,
+  },
+  permissionAlert: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    gap: 8,
+    marginTop: 12,
+    paddingTop: 12,
+    borderTopWidth: 1,
+    borderTopColor: 'rgba(255, 255, 255, 0.3)',
+  },
+  permissionText: {
+    fontSize: 12,
+    color: '#fff',
+    fontWeight: '500',
+  },
+})
diff --git a/apps/mobile/src/services/geofencing.ts b/apps/mobile/src/services/geofencing.ts
new file mode 100644
index 0000000..2c8a564
--- /dev/null
+++ b/apps/mobile/src/services/geofencing.ts
@@ -0,0 +1,74 @@
+/**
+ * Geofencing Service
+ * Handles gym location validation and distance calculations
+ */
+
+// Gym location coordinates (example: gym location)
+export const GYM_LOCATION = {
+  latitude: 37.7749,
+  longitude: -122.4194,
+};
+
+// Geofence radius in meters (500m default)
+export const GEOFENCE_RADIUS_METERS = 500;
+
+/**
+ * Calculate distance between two coordinates using Haversine formula
+ * @param lat1 Starting latitude
+ * @param lon1 Starting longitude
+ * @param lat2 Ending latitude
+ * @param lon2 Ending longitude
+ * @returns Distance in meters
+ */
+export function calculateDistance(
+  lat1: number,
+  lon1: number,
+  lat2: number,
+  lon2: number
+): number {
+  const R = 6371000; // Earth's radius in meters
+  const φ1 = (lat1 * Math.PI) / 180;
+  const φ2 = (lat2 * Math.PI) / 180;
+  const Δφ = ((lat2 - lat1) * Math.PI) / 180;
+  const Δλ = ((lon2 - lon1) * Math.PI) / 180;
+
+  const a = Math.sin(Δφ / 2) * Math.sin(Δφ / 2) +
+    Math.cos(φ1) * Math.cos(φ2) * Math.sin(Δλ / 2) * Math.sin(Δλ / 2);
+
+  const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+
+  return R * c; // Distance in meters
+}
+
+/**
+ * Check if a location is within the geofence
+ * @param userLat User's latitude
+ * @param userLon User's longitude
+ * @param radius Geofence radius in meters (defaults to GEOFENCE_RADIUS_METERS)
+ * @returns Boolean indicating if user is within geofence
+ */
+export function isWithinGeofence(
+  userLat: number,
+  userLon: number,
+  radius: number = GEOFENCE_RADIUS_METERS
+): boolean {
+  const distance = calculateDistance(
+    userLat,
+    userLon,
+    GYM_LOCATION.latitude,
+    GYM_LOCATION.longitude
+  );
+  return distance <= radius;
+}
+
+/**
+ * Get formatted distance string
+ * @param meters Distance in meters
+ * @returns Formatted distance string
+ */
+export function getFormattedDistance(meters: number): string {
+  if (meters < 1000) {
+    return `${Math.round(meters)} m`;
+  }
+  return `${(meters / 1000).toFixed(2)} km`;
+}
diff --git a/apps/mobile/tsconfig.json b/apps/mobile/tsconfig.json
index 5cc4325..a0c1326 100644
--- a/apps/mobile/tsconfig.json
+++ b/apps/mobile/tsconfig.json
@@ -12,7 +12,6 @@
     "noEmit": true,
     "strict": true,
     "target": "esnext",
-    "ignoreDeprecations": "6.0",
     "baseUrl": ".",
     "paths": {
       "@/*": [