Apps stop working mainly because of low storage, outdated software, corrupted app data, or background memory limits forcing the system to shut them down. Most of these issues clear up in under five minutes with a force stop, a cache clear, or a quick update — no reinstall needed in most cases.
Key Takeaways
- Low storage and overloaded RAM are the two most common reasons apps crash or freeze.
- Outdated apps and outdated operating systems cause compatibility errors that look like random crashes.
- Clearing cache fixes most Android issues; offloading the app fixes most iPhone issues, and neither deletes your saved data.
- Reinstalling should be your last step, not your first, since it wipes local app data that cache-clearing preserves.
- A restart resets background services and frees memory, so try it before anything else if several apps are acting up at once.
Why Do Apps Stop Working or Keep Crashing?
Before fixing anything, it helps to know what is actually going wrong. Consequently, most “app not working” problems trace back to one of five causes.
1. Low Storage Space
Apps need free space to write temporary files while they run. When your phone’s storage drops below a few hundred MB, apps start failing to open, save, or load new content. Furthermore, this is one of the easiest causes to rule out — check Settings > Storage first.
2. Too Many Apps Running in the Background
Every open app consumes CPU and RAM. Therefore, when memory runs low, the operating system force-closes background apps to protect the one you’re actively using, which can make a frequently used app appear to crash at random.
3. Outdated App or Operating System
Developers release updates to patch bugs and stay compatible with the latest OS version. As a result, an app that hasn’t been updated in months is far more likely to crash on a phone that has since updated its operating system.
4. Corrupted App Data or Cache
App files can get damaged during an interrupted update, an unexpected shutdown, or a storage error. In contrast to a clean install, a corrupted cache often causes an app to open and then immediately freeze or close.
5. Overheating or Hardware Throttling
Extreme heat forces your phone’s processor to slow down to protect itself. However, this throttling can make demanding apps like games or camera apps stutter, freeze, or exit unexpectedly.
How to Fix Apps That Aren’t Working on Android
Work through these steps in order. Additionally, each one takes under a minute, so there’s no reason to skip ahead to reinstalling.
- Force stop the app. Go to Settings > Apps > See all apps, select the app, and tap Force Stop.
- Clear the app’s cache. From the same app info screen, tap Storage & cache > Clear Cache. This removes temporary files only; your logins and saved data stay intact.
- Restart your phone. A restart clears temporary system files and resets background services that may be interfering with the app.
- Update the app. Open the Play Store, go to Manage apps & device, and install any pending update.
- Free up storage. Delete unused apps, photos, or downloads if your phone is running low on space.
- Reinstall as a last resort. If nothing else works, uninstall and reinstall the app. This wipes local app data, so only use it after the steps above fail.
How to Fix Apps That Aren’t Working on iPhone
- Close and reopen the app. Swipe up from the bottom and hold, find the app, then swipe it away before reopening it.
- Offload the app. Go to Settings > General > iPhone Storage, select the app, and tap Offload App. This clears its cache while keeping your documents and data, then tap Reinstall App to restore it.
- Restart your iPhone. This is one of the most reliable fixes since it resets every background process at once.
- Update iOS and the app. Check Settings > General > Software Update, and update the app itself through the App Store.
- Check storage space. Go to Settings > General > iPhone Storage and free up space if it’s nearly full.
Common Causes and Quick Fixes at a Glance
| Cause | How to Tell | Quick Fix |
|---|---|---|
| Low storage | Apps fail to save or load new content | Free up storage space |
| Too many background apps | App closes randomly while switching apps | Restart the phone |
| Outdated app/OS | Crashes started right after an update | Update the app and OS |
| Corrupted cache | App opens then freezes immediately | Clear cache (Android) or offload (iPhone) |
| Overheating | Crashes happen during heavy use or charging | Let the phone cool, remove the case |
When Should You Reinstall the App?
Reinstall only after force stop, cache clearing, updating, and restarting have all failed. Since reinstalling wipes locally stored app data, it should be the last step rather than the first. If a banking or payment app is involved, such as in our HDFC mobile app troubleshooting guide, always confirm you still remember your login credentials before uninstalling.
How to Prevent Apps From Crashing Again
A few habits keep most apps running smoothly long term. Therefore, consider building these into your routine:
- Keep at least 10-15% of your storage free at all times.
- Turn on automatic app updates in the Play Store or App Store.
- Restart your phone at least once a week to clear background processes.
- Avoid using your phone while it’s charging in direct sunlight or a hot car.
- Uninstall apps you no longer use instead of letting them sit idle in the background.
Some errors are more specific than a general crash. For example, if the Play Store itself is blocking a download, see our guide on the “download failed” purchase error, or if a permission prompt is being blocked by another app, check our fix for the app obscuring a permission request error. For more troubleshooting guides, visit the Fix & Support section on TeckJBS.
Official Sources and Further Reading
Read official troubleshooting help: Android Help, Google Play Help. TechJBS is independent and not affiliated with these organizations. Menus and features can change, so confirm details on your own device.
Frequently Asked Questions
Why do my apps keep saying they stopped working?
This usually means the app crashed due to low memory, a corrupted cache, or an outdated version that’s no longer compatible with your phone’s operating system. Force stopping and clearing the cache resolves most cases.
Does clearing cache delete my app data or login?
No. Clearing cache only removes temporary files. Your saved logins, settings, and documents stay exactly as they were, and the app rebuilds its cache automatically the next time you open it.
Why does only one app keep crashing while others work fine?
This points to an app-specific issue rather than a phone-wide problem, usually an outdated version, a corrupted update, or a bug the developer hasn’t patched yet. Update the app first, then reinstall if it still fails.
Will restarting my phone fix an app that won’t open?
Often, yes. Restarting clears temporary system files, frees up RAM, and resets background services, which fixes a large share of “app not working” problems without needing any other step.
How much free storage do I need to stop apps from crashing?
Keeping at least 10-15% of your total storage free is generally enough to prevent storage-related crashes, though demanding apps like games may need more.
Should I reinstall the app or wait for an update?
Try the update first. Reinstalling wipes local app data and should only happen after force stop, cache clearing, updating, and restarting have all failed to fix the problem.
