Cydia Impactor is a venerable tool used to install IPA files on iOS (and APK files on Android). It's a more technical method, but it works reliably for many users.
Most "Android iPA" files are actually disguised malicious APKs. Once installed, they can steal your personal data, track your location, or log your keystrokes.
Drag the iAndroid.ipa file from your computer and drop it directly onto the Cydia Impactor window.