You have been able to sideload apps if you really want to for several years on a non jailbroken iphone with something like sideloadly. You need to connect it to

You have been able to sideload apps if you really want to for several years on a non jailbroken iphone with something like sideloadly. You need to connect it to a computer once a week to refresh and it's limited to 3 apps for a non dev account. Or pay for a developer account