You can install 3 non AppStore programs without Jailbreaking onto your iPhone. If you pay $100 per year you can install as many as you want without refreshing and get notifications.

For free: connect your phone to a computer once then follow instructions online then refresh it over WiFi once per week. It does it automatically. Hacked games, Spotify premium no ads, YouTube no ads, or whatever app you decide to make on your own.