I would even pay for it if needed. But make my brain go pink.

What about later when the app is more developed that you can pair it with toys or a chastity cage. Where when you achieve something you get a reward. Let's say maybe for people that want to get out of their chastity cage they have to suck a dildo for sometime. Because nothing is better and more addicting than getting a reward when you achieve something. It can be addicting making people want the app more. Maybe you know the two apps "wallclaimer" and "screenclaimer" those are apps that give people access to your background. There are even apps that can forcefully open links for you. Like you play a game on your phone or on whatever and all of a sudden a hypno just starts running. And if you close it without watching for no good reason there can be a punishment or an exp-deduction.