As a thought experiment, imagine you had a smart phone without internet access (but it was somehow able to download apps).

Apps you would want on that device might include a lot of healthy apps.

For example —

It would replace many of the devices we used pre-internet. A compass. A calendar. A guitar tuner. A pedometer. A notebook. A recipe book - where you place recipes. A recording device - and a bank of guitar effects pedals.

These are all healthy apps in my opinion.