Why Your App Keeps Crashing (and What's About to Happen)
You tap the app icon, it flashes for a second, then boom—you're back on the home screen. Sometimes you get a message that says "App Crashed" or the app just closes silently. This usually happens right after an iOS update, when you're low on storage, or when the app's data got corrupted.
I've fixed hundreds of these over the years. Most of the time it's a simple cache problem. But sometimes it's something deeper. Here's the thing: you don't need to try every fix. Start with the first one, test the app, and only move on if it still crashes. You can stop as soon as it works.
Fix 1: Force Quit and Relaunch (30 Seconds)
This is the oldest trick in the book, and it works more often than you'd think. When an app hangs or crashes, sometimes it just needs a clean start.
- If you're on an iPhone with Face ID, swipe up from the bottom and pause in the middle of the screen. If you have a Home button, double-click it.
- You'll see all your open apps in cards. Swipe left or right to find the crashing app.
- Swipe the app's card up and off the top of the screen to close it.
- Wait about 5 seconds.
- Tap the app icon to launch it again.
What you should see: The app opens fresh, with no animation of a resume. If it loads and stays open, you're done. If it crashes again, move to Fix 2.
Fix 2: Restart Your iPhone (5 Minutes)
If force quitting didn't help, a restart clears out system-level glitches that might be interfering with the app. This is a bit more than just turning the screen off and on—you're doing a full reboot.
Here's how to restart any iPhone (works for iOS 15, 16, 17, and 18):
- Press and hold the side button (or top button on older models) along with either volume button until you see the power-off slider.
- Drag the slider to turn your iPhone off. Wait for the screen to go completely black.
- Wait 30 seconds. Be patient, this matters.
- Press and hold the side button again until you see the Apple logo.
- Let go and wait for your iPhone to boot up. It might take a couple of minutes.
What you should see: After the Apple logo, you'll see your lock screen. Now try opening the app. If it works, great. If it still crashes, we're going deeper.
Fix 3: Update the App and iOS (10 Minutes)
More often than not, crashes happen because the app was written for an older iOS version, or the latest iOS update broke compatibility. A quick update usually patches the problem.
Update the App First
- Open the App Store.
- Tap your profile picture in the top-right corner.
- Scroll down to see pending updates. If your crashing app is listed, tap "Update" next to it.
- If you don't see it, pull down to refresh the list.
What you should see: The update downloads and installs. After it's done, try launching the app.
Update iOS if the App Is Already Up to Date
- Open Settings.
- Tap General.
- Tap Software Update.
- If there's an update available, tap "Download and Install." Your iPhone will restart itself.
What you should see: Your phone restarts and installs the update. This can take 15-20 minutes. After the update, the app should work. If it doesn't, it's time for the heavy-duty stuff.
Fix 4: Delete and Reinstall the App (10 Minutes)
Sometimes the app's local data gets corrupted. Maybe a download got interrupted, or the app's cache is full of junk. Reinstalling wipes all that clean. You'll lose any app-specific data that's not backed up to the cloud, like login credentials for some apps, but you can usually log back in.
- Find the app on your Home Screen.
- Press and hold the app icon until the menu pops up.
- Tap "Remove App."
- Tap "Delete App" in the confirmation popup, then tap "Delete" again.
What you should see: The app disappears from your screen. Now to reinstall:
- Open the App Store.
- Search for the app's name.
- Tap the download icon (cloud with an arrow).
- Wait for it to install, then open it.
What you should see: The app launches fresh. You'll probably need to log in again, but if it opens and stays open, you're set. If it still crashes, we've got one more step.
Fix 5: Check Storage and Reset All Settings (15+ Minutes)
If you've gotten this far and the app still crashes, it's likely a system-level problem. Here are the two things that fix 90% of the stubborn cases I see.
Check Your Storage
When your iPhone is nearly full, apps can't write temporary files, and they crash. Here's how to check:
- Open Settings.
- Tap General.
- Tap iPhone Storage.
If you see a red bar near the top or less than 1 GB free, that's your problem. Free up space by deleting old photos, videos, or unused apps. Then try the crashing app again.
Reset All Settings
This doesn't erase your data, but it resets Wi-Fi passwords, Bluetooth connections, and some permissions. It clears up weird system conflicts without nuking everything.
- Open Settings.
- Tap General.
- Scroll to the bottom and tap "Transfer or Reset iPhone."
- Tap "Reset," then tap "Reset All Settings."
- Enter your passcode and confirm.
What you should see: Your iPhone restarts. After it boots up, you'll need to re-enter your Wi-Fi password. But all your apps and data are still there. Try the crashing app now.
Still Crashing? Here's What to Do Next
If you've done all five fixes and the app still crashes on launch, then you're dealing with a bug in the app itself. Your best move is to contact the app developer directly. Go to the App Store, find the app, scroll down to the "Information" section, and tap "Support." That's usually a link to their support page or email.
Another option: check Apple's System Status page to see if there's an outage with iCloud or another service that might affect the app. You can find that at https://www.apple.com/support/systemstatus/.
One last thing—if the app worked fine before a specific iOS update and the developer hasn't updated it in months, it might just be broken. That's on them, not you. All you can do is wait for an update or find an alternative app.
In my experience, Fix 1 or Fix 2 solves the problem for most people. Fix 4 catches the rest. If you're reading this section, you're in the unlucky 1% that has to deal with a real bug. Don't stress—it's not your phone.