I kept bouncing off habit trackers. They're built around what you didn't do, and on the days I most needed them, that was the last thing I wanted to look at. So I built the inverse. Cairn is a done list: you write down what you finished — the dishes, one email, a chapter — and it stacks into a heatmap over the weeks. There's a streak, but it has a grace day, so one quiet day doesn't wipe it. It's free with no ads, works offline, English and German. Android app and a web version. A Plus tier pays for the hosting: more than one list, shared lists, photos on an entry, your own categories, more colour themes, and your full history (free looks back 90 days). https://cairn-milestones.ch Built solo — Kotlin/Compose on Android, Angular on the web, Firebase behind both. Happy to go into any of it, and I'd genuinely like to hear where it falls down.   submitted by   /u/Cairn-YourMilestones [link]   [comments]