I am trying to calculate sha value during launch and comparing it with the one that i have stored in server to check app integrity.

or maybe any standard checks that i can use on my native code to ensure the integrity of my app, except app attest?

Thanks for the answer. It clarified a lot of things. But is there a way to get Get Certificate SHA1 Fingerprint in iOS. I know in mac os its pretty straight forward. Can we still fetch it somehow on IOS

yes, i want to do it in iOS , natively in code(swift). Basically i want to have a check on our side to know if my app has been tampered with or not. I had an idea of verify the code signature to get this done. But i am not sure . I would love to get an solution for handling this situation of knowing if someone has tampered with the app and throw an popup alert when found.