: Apps installed via a free Apple ID usually expire every 7 days . You will need to reconnect to your computer to "refresh" the signature, or the app will stop opening.

Open the sideloading tool and drag the .ipa file into the interface.

: Since this isn't from the App Store, you need a tool to "sign" the app so your iPad will run it. Common tools include AltStore , Sideloadly , or TrollStore .