IPA files are the keys to that time capsule. With a jailbreak, the right tools, and a bit of archival digging, you can make an iPhone 4 run exactly as it did when the world was listening to “Shake It Off” and playing Threes. It’s not practical—but for a hobbyist, it’s magic.
Finding the correct version of an app is the most critical step, as modern IPA files will not open on iOS 7. ipa files for ios 712
Create a .ipa file via "Archive" in Xcode and share it using services like Diawi . To help you better, could you let me know: Which app or type of app (game, utility, browser) Are you jailbroken already? Knowing these will help me find the right source or guide. IPA files are the keys to that time capsule
There are several sources where you can download IPA files for iOS 7.1.2: Finding the correct version of an app is