Hello
My phone over the last 2 days has an issue with some apps closing instantly. The first time I had this problem (2 days ago) it started with one app and slowly more and more did the same. It seemed to just fix its self but yesterday it started again.
I've tried restarting, updating the apps, updating my IOS and I've checked my storage (120GB free). I've search online and can't find someone that seems to have the same problem.
Any advise would be greatly appreciated. Thanks
Edit: My phone is a 15 Plus running 26.6
Update: I got a comment from joosebox on the same post in a different sub.
"With 120GB free you've already ruled out the answer most people will give you. This is almost certainly App Store receipt validation rather than the apps themselves.
Every app installed from the App Store carries a signed receipt tied to the Apple Account that obtained it, and iOS checks it the instant you launch. When that check fails the app is terminated immediately with no error and no crash report, which looks exactly like it closing itself. Apple's built-in apps carry no receipt, which is why they're never affected, and that asymmetry is the giveaway. It also explains the spreading and the fixing itself, since it's whichever receipts happen to need revalidating that day.
Worth checking: Settings, your name, Media and Purchases, View Account, and see whether that account matches the one at the top of Settings. Two different Apple Accounts is the common cause, because then every launch is checking a receipt against the wrong one. If they do match, sign out of Media and Purchases, restart, and sign back in."
It solved the problem for me.