How to install APK on Android and IPA on iOS?

Installing APK on Android:

1. Enable "Unknown sources" on your device (in security settings).
2. Transfer the APK file to your device (via USB, download from the internet, or use ADB).
3. Install the APK:
   • Using a file manager — open the APK and confirm installation.
   • Using ADB (Android Debug Bridge):

adb install path/to/app.apk

Installing IPA on iOS:

1. To install an IPA on an iOS device, the app must be signed with a valid developer certificate.
2. Use Xcode to install the app on the device (connect the device, open the project, and run on the device).
3. For testing, tools like TestFlight or third-party services (e.g., Diawi) can be used.
4. You can also install IPA via the command:

ideviceinstaller -i path/to/app.ipa

(Requires installed libimobiledevice and a connected device).

Without a signed certificate and proper profiles, installing IPA is impossible on real devices.