An (iOS App Store Package) is the archive file format used for iOS applications. Think of it as the iPhone equivalent of a .exe file on Windows or .apk on Android. Every app you download from the App Store is essentially an IPA.
A: AltStore only installs decrypted IPAs that exist. No one has decrypted GTA V for iOS because it was never encrypted for iOS in the first place. Gta V Ios Ipa
But does it actually exist? Can you truly sideload the full GTA V experience onto your iPhone or iPad? An (iOS App Store Package) is the archive