Because iOS 9.3.5 predates modern sideloading restrictions, you have several practical options:
An IPA file is the executable format for iOS applications, similar to an APK on Android. It contains the compressed code, resources, and metadata required to run an app on an iPhone or iPad. How to Install Apps on iOS 9.3.5 ipa apps ios 935
: If your Apple ID has previously "purchased" an app (even a free one), you can go to the Purchased section in the App Store on your iOS 9.3.5 device. Because iOS 9