Repentance has a complex save structure. Unofficial IPAs often have broken DRM cracks that cause the game to crash on floor transitions (especially when entering the "Mausoleum" or "Corpse"). There is nothing more frustrating than a perfect run dying to a crash at the final boss.
Installing the IPA file requires a few steps: binding of isaac repentance ipa
The most stable and supported way to play is through the official App Store listing for The Binding of Isaac: Rebirth The Setup: You purchase the base game ( Once you own the base game, you can unlock Afterbirth Afterbirth+ , and finally Repentance through in-app purchases. The base game typically costs around Repentance has a complex save structure