iPhone app under test crashes after a few days

Question

I am new to making iPhone apps and this is my first attempt.

I have made a simple app which has two buttons in it. One button opens a URL and the other opens a Pop-u

Answer 1

No it's not a guess actually...

It's 7 days exactly for a free developer account.

You can check validity also in Xcode Provisioning profile also:

In General → Signing ("Automatically Manage Signing" checked) → Provisioning Profile (Click on Info (i) icon) you can check validity of the profile: