The brief
Build a habit tracker. The hard part isn't the CRUD — it's making someone come back tomorrow.
Required features
These are the floor. Hit all of them or you're not in the running.
- Create and delete habits
- Daily check-in / mark-complete
- A streak or history view
- State persists across reloads
Bonus — the creative ceiling
The required list makes builds comparable. Everything above it is where you win.
- A satisfying check-in interaction
- Reminders or a calendar heatmap
- Multiple habits with categories
- Anything that makes breaking the chain hurt
Constraints
- Must be deployed to a public URL.
- Repo must be public.
- Built during the build window — commit history is the receipt.
How it's judged
Community vote during the voting window. One upvote per submission. Top 3 take a trophy.