Do you have access to a for the setup? Which iOS version is your iPhone or iPad currently running?

Note: Free Apple developer accounts require you to refresh sideloaded apps every 7 days via AltStore while connected to the same Wi-Fi network as your computer. Method 2: Sideloadly

Because these apps are not in the Apple App Store, you must them using an .ipa file. Method A: AltStore (No Jailbreak - Preferred)