Here are ten different ways to stop apps from crashing or hanging:

1
The Force stop  method. ...
2
Restart your Android device. ...
3
Keep your phone updated. ...
4
Clear your cached data. ...
5
Reset app data. ...
6
Reinstall the crashing app. ...
7
Check your internet connection. ...
8
Expand your storage.
The most common reasons your iPhone apps keep crashing\n\n The app that is crashing needs an update. You're not connected to the internet. Your iPhone is running on a low battery. You don't have enough storage capacity to run the app.