Apple does not allow emulators on the App Store unless they are explicitly for debugging or educational use (and even then, ROM loading is prohibited). As a result, developers distribute MAME4iOS as an IPA (iOS App Store Package) file. This is the same format Apple uses for official apps, but it must be signed with a developer certificate or sideloaded using tools like AltStore, SideStore, or TrollStore (depending on your iOS version).
Because the app is not hosted on official stores, caution is essential. Many third-party sites bundle malware or adware with IPAs. Reputable sources include: Mame4ios Ipa
Warning: Downloading IPAs from unknown sites risks security vulnerabilities. Always check file hashes and community feedback. Apple does not allow emulators on the App
Cause: Wrong ROM set version. Mame4iOS is picky. Solution: Find ROMs specifically labeled "MAME4iOS compatible" or "MAME 0.139 set." Warning: Downloading IPAs from unknown sites risks security
MAME4iOS IPA: Packaging, Distribution, and Legal Considerations
