| Aspect | Daychain | HabitKit |
|---|---|---|
| Visual metaphor | A literal forged chain that visibly splits on a missed day | A color-graded streak grid, similar to a contribution heatmap |
| Forgiveness for missed days | Weekly skip credits, monthly repair credits, and three selectable chain modes | Marks a day done or not on the grid; no publicized credit-based forgiveness system |
| Task types | Four types — binary, count, duration, avoid | Primarily check-in style habit tracking visualized on the grid |
| Content and education | Product-focused marketing site | A genuine, actively maintained blog with habit-building content — a real strength |
| Social features | Friend leaderboard on chain length/activity, habit names stay private | No friend or social leaderboard feature |
| Widgets | Static iOS home-screen and lock-screen widgets | Home-screen widget support |
| Pricing model | Free app with monthly/annual premium subscription, 14-day trial | One-time purchase or subscription option, depending on plan |
Verdict
HabitKit is a strong pick if the grid/heatmap way of seeing your habits clicks for you, and its blog is a genuine resource if you want to read about habit-building alongside the app. Daychain is the better fit if you want the chain metaphor specifically — a visible, literal break instead of a duller cell on a grid — plus built-in forgiveness credits, more granular task types, and a friend leaderboard. Both are well-made; this one comes down to which visualization and mechanic actually keeps you coming back.