My app won't start on an iOS device (exported .ipa)

Question

I created an app with Swift 5 in Xcode 10 and added the UDIDs of multiple iOS devices to my developer account (got the $99 one).

If I install my app on the device throug

Answer 1

The problem was caused by picking "iOS App Store". Instead, as @DonMag pointed out, you have to use "Ad Hoc" if you want to export an .ipa file that you can drag into iTunes and install on your device - as long as you added the device's UDID to your developer account, of course.

Step 1-3 and 5-7 are the same (as in my question) but for step 4 do this instead:

4. Highlight the archive that was just created and click on "Distribute app"
   • Ad Hoc - Next
   • Next (Distribution options)
   • Next (Re-sign "myApp")
   • Enter your password twice
   • Export (Review myApp.ipa content)
   • Pick folder - Export

Answer 2

You can export it for for App Store submission via automation tools - which is often done in a company environment (multiple developers, multiple apps, CI / CD [Continuous integration / Continuous Delivery], etc).

If you're not doing that, you submit the app via Xcode.

Probably worth your time to read through https://help.apple.com/app-store-connect/