How to Fix "Xcode App Crashes on Startup"

If your Xcode app crashes immediately after startup, it could be due to a variety of reasons such as coding issues, incorrect settings, or device misconfigurations.

Here's how to troubleshoot and fix the problem: First, check if there are any errors in your code that could be causing the crash.

Look for unhandled exceptions, memory leaks, or infinite loops.

Review your code and check for any fatalError calls or crashes related to out-of-bounds errors.

If you're unable to pinpoint the issue through code review, use the Xcode debugger to help identify the problem.

Set breakpoints at the beginning of your app’s lifecycle (e.g., in the AppDelegate or SceneDelegate) to trace where the crash occurs.

If your app crashes only on certain devices, check the device's specifications and ensure they meet the minimum requirements for your app.

This could be an issue with the device's OS version or hardware.

Another common cause of crashes on startup is corrupted project files.

Delete the DerivedData folder and clean the project by going to Product > Clean Build Folder.

Afterward, rebuild the app to see if the issue is resolved.

If you’ve recently added new libraries or frameworks to your project, ensure they are correctly integrated and compatible with the rest of your project.

Sometimes, an incompatible third-party library can cause crashes.

If your app uses external resources such as databases, network calls, or APIs, make sure they are working properly.

Sometimes, startup crashes happen when the app fails to fetch data from an API or database.

Check for any network connectivity issues that might be affecting your app.

Lastly, ensure that all device certificates and provisioning profiles are up to date.

If they are expired or mismatched, your app might fail to launch on a real device.

Go to Xcode > Preferences > Accounts to check for any issues with your profiles.

After following these steps, the app should stop crashing on startup.