diff --git a/frontend/src/contexts/AuthContext.tsx b/frontend/src/contexts/AuthContext.tsx
new file mode 100644
index 00000000..d0f3eba9
--- /dev/null
+++ b/frontend/src/contexts/AuthContext.tsx
@@ -0,0 +1,138 @@
+import React, { createContext, useState, useContext, useEffect } from 'react';
+import AsyncStorage from '@react-native-async-storage/async-storage';
+
+interface User {
+  user_id: string;
+  email: string;
+  first_name: string;
+  last_name: string;
+  access_token: string;
+  refresh_token: string;
+}
+
+interface AuthContextType {
+  user: User | null;
+  loading: boolean;
+  signIn: (email: string, password: string) => Promise<void>;
+  signUp: (
+    email: string,
+    password: string,
+    firstName: string,
+    lastName: string,
+    phone: string,
+    referralCode?: string,
+    language?: string
+  ) => Promise<void>;
+  signOut: () => Promise<void>;
+  setUser: (user: User | null) => void;
+}
+
+const AuthContext = createContext<AuthContextType | undefined>(undefined);
+
+export function AuthProvider({ children }: { children: React.ReactNode }) {
+  const [user, setUser] = useState<User | null>(null);
+  const [loading, setLoading] = useState(true);
+
+  useEffect(() => {
+    loadUser();
+  }, []);
+
+  const loadUser = async () => {
+    try {
+      const userData = await AsyncStorage.getItem('user');
+      if (userData) {
+        setUser(JSON.parse(userData));
+      }
+    } catch (error) {
+      console.error('Error loading user:', error);
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  const signIn = async (email: string, password: string) => {
+    try {
+      const response = await fetch('http://localhost:8001/api/auth/signin', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({ email, password }),
+      });
+
+      if (!response.ok) {
+        throw new Error('Invalid credentials');
+      }
+
+      const userData = await response.json();
+      await AsyncStorage.setItem('user', JSON.stringify(userData));
+      setUser(userData);
+    } catch (error) {
+      console.error('Sign in error:', error);
+      throw error;
+    }
+  };
+
+  const signUp = async (
+    email: string,
+    password: string,
+    firstName: string,
+    lastName: string,
+    phone: string,
+    referralCode?: string,
+    language: string = 'en'
+  ) => {
+    try {
+      const response = await fetch('http://localhost:8001/api/auth/signup', {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify({
+          email,
+          password,
+          first_name: firstName,
+          last_name: lastName,
+          phone,
+          referral_code: referralCode,
+          language,
+        }),
+      });
+
+      if (!response.ok) {
+        const error = await response.json();
+        throw new Error(error.detail || 'Sign up failed');
+      }
+
+      const userData = await response.json();
+      await AsyncStorage.setItem('user', JSON.stringify(userData));
+      setUser(userData);
+    } catch (error) {
+      console.error('Sign up error:', error);
+      throw error;
+    }
+  };
+
+  const signOut = async () => {
+    try {
+      await AsyncStorage.removeItem('user');
+      setUser(null);
+    } catch (error) {
+      console.error('Sign out error:', error);
+    }
+  };
+
+  return (
+    <AuthContext.Provider value={{ user, loading, signIn, signUp, signOut, setUser }}>
+      {children}
+    </AuthContext.Provider>
+  );
+}
+
+export function useAuth() {
+  const context = useContext(AuthContext);
+  if (context === undefined) {
+    throw new Error('useAuth must be used within an AuthProvider');
+  }
+  return context;
+}