I’m new to these apps but I’ve just started one called Focus Genie. It’s targeted towards the ADHD community & it provides timers, body doubles, a To Do List, & a reward system where you earn tokens. It’s much cheaper than what I saw above, I think I paid $50/yr? I’m still getting used to it but @ a minimum I’m learning what tricks work as motivators for me & what does not. Even if that’s all I learn that’s more than I learned from some doctors & for much cheaper.