Ipa Archive • Must Read

: These archives are vital for "sideloading"—installing apps from outside the official store—allowing users to breathe new life into vintage iPhones .

IPA File Format - iOS Reverse Engineering Reference - Mintlify IPA Archive

: Every .ipa file is actually a renamed ZIP archive . If you rename a game's .ipa to .zip , you can peek inside to see its code, images, and sound files. and sound files.