However, as the App Store moves forward, older 32-bit apps and versions compatible with iOS 7 are disappearing. This is where the comes into play. Whether you are dusting off an iPhone 4S, an iPhone 5, or an iPad 2, building your own archive is essential for keeping these devices functional. What is an IPA File?
If you downloaded an app , and it is still in your Apple ID purchase history, you can sometimes trick the store. ios 7 ipa archive