diff --git a/frontend/app/register/index.tsx b/frontend/app/register/index.tsx
index 6ca43ee..3360e5e 100644
--- a/frontend/app/register/index.tsx
+++ b/frontend/app/register/index.tsx
@@ -7,6 +7,10 @@ import { register } from '@/services/auth/register';
 import { Button } from '@/components/Button';
 import { Spinner } from '@/components/Spinner';
 import { useRouter } from 'expo-router';
+import {
+  getSpotifyCredentials,
+  validateSpotifyCredentials,
+} from '@/utils/spotify';
 
 const Index = () => {
   const [username, setUsername] = useState('');
@@ -14,9 +18,15 @@ const Index = () => {
   const [error, setError] = useState<string>();
   const [isLoading, setIsLoading] = useState(false);
 
-
   const router = useRouter();
   const registerUser = async () => {
+    const isSpotifyValid = await validateSpotifyCredentials();
+
+    if (!isSpotifyValid) {
+      setError('Please authorize Spotify before continuing');
+      return;
+    }
+
     setError(undefined);
     setIsLoading(true);
     const [_, error] = await register(username, password);
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 5f6db21..078abdb 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -9,6 +9,7 @@
       "version": "1.0.0",
       "dependencies": {
         "@expo/vector-icons": "^14.0.2",
+        "@react-native-async-storage/async-storage": "1.23.1",
         "@react-navigation/bottom-tabs": "^7.2.0",
         "@react-navigation/native": "^7.0.14",
         "expo": "~52.0.28",
@@ -2961,6 +2962,18 @@
         "react": "^16.8 || ^17.0 || ^18.0"
       }
     },
+    "node_modules/@react-native-async-storage/async-storage": {
+      "version": "1.23.1",
+      "resolved": "https://registry.npmjs.org/@react-native-async-storage/async-storage/-/async-storage-1.23.1.tgz",
+      "integrity": "sha512-Qd2kQ3yi6Y3+AcUlrHxSLlnBvpdCEMVGFlVBneVOjaFaPU61g1huc38g339ysXspwY1QZA2aNhrk/KlHGO+ewA==",
+      "license": "MIT",
+      "dependencies": {
+        "merge-options": "^3.0.4"
+      },
+      "peerDependencies": {
+        "react-native": "^0.0.0-0 || >=0.60 <1.0"
+      }
+    },
     "node_modules/@react-native/assets-registry": {
       "version": "0.76.6",
       "resolved": "https://registry.npmjs.org/@react-native/assets-registry/-/assets-registry-0.76.6.tgz",
@@ -7525,6 +7538,15 @@
         "node": ">=8"
       }
     },
+    "node_modules/is-plain-obj": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/is-plain-obj/-/is-plain-obj-2.1.0.tgz",
+      "integrity": "sha512-YWnfyRwxL/+SsrWYfOpUtz5b3YD+nyfkHvjbcanzk8zgyO4ASD67uVMRt8k5bM4lLMDnXfriRhOpemw+NfT1eA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/is-plain-object": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-2.0.4.tgz",
@@ -9344,6 +9366,18 @@
       "integrity": "sha512-zYiwtZUcYyXKo/np96AGZAckk+FWWsUdJ3cHGGmld7+AhvcWmQyGCYUh1hc4Q/pkOhb65dQR/pqCyK0cOaHz4Q==",
       "license": "MIT"
     },
+    "node_modules/merge-options": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/merge-options/-/merge-options-3.0.4.tgz",
+      "integrity": "sha512-2Sug1+knBjkaMsMgf1ctR1Ujx+Ayku4EdJN4Z+C2+JzoeF7A3OZ9KM2GY0CpQS51NR61LTurMJrRKPhSs3ZRTQ==",
+      "license": "MIT",
+      "dependencies": {
+        "is-plain-obj": "^2.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/merge-stream": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/merge-stream/-/merge-stream-2.0.0.tgz",
diff --git a/frontend/package.json b/frontend/package.json
index 435f2c2..84346da 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -40,7 +40,8 @@
     "react-native-screens": "~4.4.0",
     "react-native-web": "~0.19.13",
     "react-native-webview": "13.12.5",
-    "expo-secure-store": "~14.0.1"
+    "expo-secure-store": "~14.0.1",
+    "@react-native-async-storage/async-storage": "1.23.1"
   },
   "devDependencies": {
     "@babel/core": "^7.25.2",
diff --git a/frontend/utils/spotify.ts b/frontend/utils/spotify.ts
index 397dd9e..d6db911 100644
--- a/frontend/utils/spotify.ts
+++ b/frontend/utils/spotify.ts
@@ -1,5 +1,10 @@
 import { AccessTokenResponse } from '../types';
 import { makeRedirectUri } from 'expo-auth-session';
+import AsyncStorage from '@react-native-async-storage/async-storage';
+
+const ACCESS_TOKEN_KEY = 'spotify-access-token';
+const EXPIRATION_KEY = 'spotify-expiration';
+const REFRESH_TOKEN_KEY = 'spotify-refresh-token';
 
 export const getClientId = () => {
   return process.env.EXPO_PUBLIC_SPOTIFY_CLIENT_ID;
@@ -27,6 +32,11 @@ export const fetchAccessToken = async (code: string) => {
     },
   });
   const json = (await response.json()) as AccessTokenResponse;
+  saveSpotifyCredentials(
+    json.access_token,
+    json.expires_in,
+    json.refresh_token
+  );
   console.log(json);
   return {
     accessToken: json.access_token,
@@ -34,3 +44,36 @@ export const fetchAccessToken = async (code: string) => {
     refreshToken: json.refresh_token,
   };
 };
+
+export const saveSpotifyCredentials = async (
+  accessToken: string,
+  expiration: number,
+  refreshToken: string
+) => {
+  await AsyncStorage.setItem(ACCESS_TOKEN_KEY, accessToken);
+  await AsyncStorage.setItem(
+    EXPIRATION_KEY,
+    (Date.now() + expiration).toString()
+  );
+  await AsyncStorage.setItem(REFRESH_TOKEN_KEY, refreshToken);
+};
+
+export const getSpotifyCredentials = async () => {
+  const storedExpiration = await AsyncStorage.getItem(EXPIRATION_KEY);
+  return {
+    accessToken: await AsyncStorage.getItem(ACCESS_TOKEN_KEY),
+    expiration: storedExpiration ? parseInt(storedExpiration) : null,
+    refreshToken: await AsyncStorage.getItem(REFRESH_TOKEN_KEY),
+  };
+};
+
+export const validateSpotifyCredentials = async () => {
+  const { accessToken, expiration, refreshToken } =
+    await getSpotifyCredentials();
+
+  if (!expiration || expiration > Date.now()) {
+    return false;
+  }
+
+  return accessToken && refreshToken;
+};