I have two ideas:
Fartapp: An application that senses everytime you fart. At the end of the day you see how many farts you have released, how long they were and so on. This way you could get an indication of your gastric health. Kinda like those step counters, but for butt gas.
Fapp: This application you can push a button everytime you touch yourself. This way, at the end of the day, week, month or year you can see how many times you have done it. I think it's a big problem today, where people waste a lot of time and energy doing this too much. This way you could track it. In the app you can also create a "my time schedule", so that you do it only on specific dates and times. This way you can control it more.
If you create any of these, please make an honour mention for me.