apple

how to install an old version of an iOS app

usually it’s not that simple for apple user to install a previous version of an app, sideloading of apps is reserved for android devices or just in cydia store via iOS jailbreak

TestFlight is apple’s Beta Testing Service to test Pre-Release version with new features, it support up to 10.000 tester invited per mail or via shared link, your able to install newer and even older versions of the invited app, or switch betweeen versions is possible, but builds remain just active for 90 days

the link will refer to the previous installed TestFlight app, select the shared beta app and select any previous build