iPhone App Under Test Crashes After a Few Days

Application does not open after a few days of use

Free development account has a 7 days running limit.

As you can see, you need to pay for developer program to continue using your app in your device or as the comment suggests, you can rebuild again and again using Xcode and get another 7 free days, but you'll lose all the data of your app. Also there is a limit for how many apps you can build with your free development account in this period and also a limit for how many devices can carry this kind of app.

Image Source: https://developer.apple.com/support/compare-memberships/

Why almost every app crashes after you set up the date far away?

All provisioning profiles except those issued by Apple when they sign your app for the App Store have an expiration date.

When you set your date forward you are setting it past the expiration date of your development provisioning profile. An app without a valid provisioning profile can't be launched.

Once a provisioning profile has been flagged by iOS as expired it won't be honoured, even if the date is set back; This is to prevent people from setting their device date backwards in order to run apps with expired profiles.

iOS App keeps crashing

Apps installed with free developer account have expiry date of about 48 hours , after which they do not open. I do not have any official document to support this but this is what I have observed ever since I have started using free developer account.

There is nothing one can do about this.

How to solve intermittent crash that happens on device every 14 days?

After a while I finally found the issue and it was not related to code :) The reason for the crash was that I still was using an unpaid developer account, and with those - the app have to be re-built every 14 days.

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