Clearing cache deletes an app's temporary files, such as saved images it keeps to load faster, while keeping your login and settings. Clearing data goes further and resets the app to a like new state, removing your accounts, settings, saved logins and downloaded content. Clearing cache is a safe first step. Clearing data is closer to a fresh install.
Why this happens
Apps store two kinds of files. The cache holds temporary items like images, thumbnails and web pages so the app opens quickly and uses less data next time. This can safely be deleted, and the app rebuilds it as you use it.
App data is everything else the app saved, including your login, preferences, offline files and databases. Clearing it wipes all of that, which is why the app behaves as if you just installed it.
This split is clearest on Android, which has separate buttons for each. On iPhone there is no cache button, so you offload the app, or delete and reinstall it instead.
Is this normal?
Yes. Clearing cache is a routine troubleshooting step and frees up space. Clearing data is a stronger reset that is normal to use when an app misbehaves.
Does it cause any problems?
Clearing cache is low risk. The app may open slightly slower once as it rebuilds temporary files. Clearing data can log you out and erase in app settings or offline downloads, so only do it when you are ready to set the app up again.
How to fix or check it
- On Android, open Settings, Apps, pick the app, then tap Storage.
- Tap Clear cache first to remove temporary files without losing your login.
- If the problem continues, tap Clear storage or Clear data, but expect to sign in and set up the app again.
- On iPhone, there is no clear cache button. Open Settings, General, iPhone Storage, pick the app, then choose Offload App to clear it while keeping your documents, or Delete App to remove everything.
- For a browser cache on any device, use the browser's own settings under privacy or history to clear browsing data.
- Restart the app after clearing to confirm the issue is fixed.
Frequently asked questions
Will clearing cache log me out?
No. Clearing cache keeps your login and settings and only removes temporary files. Clearing data is what logs you out and resets the app.
Is it safe to clear cache regularly?
Yes, it is safe and can free up storage. You do not need to do it often, since apps manage the cache themselves, but it is a handy fix for glitches.
How do I clear cache on iPhone?
iPhone has no direct cache button for apps. Use Offload App in iPhone Storage to clear an app while keeping its data, or delete and reinstall it to clear everything.