Kadō: Privacy-First Habit Tracker

A free, open-source iOS habit tracker with a premium user experience and privacy-focused design. Users track daily habits without worrying about data collection. With Apple Watch support planned, it targets health-conscious iOS users seeking simple, elegant tracking without ads or subscriptions.

Privacy fatigue is real, and post-GDPR awareness plus Apple's own App Tracking Transparency push have made "we don't collect your data" a genuine differentiator rather than a niche concern. Streaks is the closest incumbent — polished, paid upfront, with a loyal base — and the free/open-source angle is the main wedge here. The $0–500/mo band is honest: open-source habit trackers almost never monetize well because the users most attracted to privacy-first tools are also the most resistant to paywalls, tips, or any upsell, making even that ceiling optimistic without a clear premium tier. The biggest risk is the classic open-source trap — building a well-regarded project that gets stars on GitHub but generates no revenue, leaving no sustainable reason to maintain it past the initial enthusiasm.