Streak - Habit tracker for Trello

Streak was my first ever side project, and my most successful one, too! It allows you to do habit tracking from within Trello. I built it in 2019, and although I don't maintain it anymore, it does have over 50,000 installs.

Streak lets you check off that you've completed your habit using the calendar on the Trello card, and then you can see at a glance how you're tracking across all your habits with the little badges on the front of the cards.

The entire thing is a frontend with no server. This is because the Trello Power-ups API does let you store data on the card, so I didn't have to spin up a backend. I think there is some sort of max character limitation though, so if you tracked your habits for an entire year, you were liable to run out of data storage on the card.

It's being hosted for free on Github Pages, and you can check out the source code for yourself here.