I built Quit All, an iPhone app for breaking bad habits.

  The main idea is that most habit trackers help after relapse, but cravings happen before that. Quit All has an SOS mode with a timer, GIFs/prompts, streak tracking, relapse logging,
  savings, milestones, danger-time stats, and iOS widgets.

  YouTube demo:
  https://www.youtube.com/watch?v=qwNK4rqOY88

  App Store:
  https://apps.apple.com/us/app/quit-all-break-every-habit/id6760978934

  Website:
  https://quit-all.com

That's a good idea! It would be great if it also had communities with people who wants to quit the same habit. Like a supporting group hahah

thanks man, do you know such communities online