Caveday ?… Anyone tried it ?

Hello everyone, I’ve seen Caveday mentionned in a post on Reddit about ADHD et productivity. It looks like body doubling but, you know, you have to pay for it 😅 I’d rather not pay for such a thing, but still, I remain very interested because I’m a teacher, and the summer break here in France is very long, and I always have a very hard time being productive during 3 weeks in August… (HUGE understatement !!) So, if you tried Caveday and can tell me more about it (mainly : is it worth it ?), or something equivalent, please tell me ! 🙏🏻🤗 Bye !