No. 02 of 09, released 15 April 2026
Sauni
A sauna log and coach that reads your heart rate from Apple Health.
Context
Heat practice is easy to do and hard to measure. Most people keep it in their head: how hot, how long, how it felt the next morning.
Idea
Log temperature, duration and how you feel, and let Apple Health fill in heart rate and HRV. Over weeks the sessions turn into a record you can actually read.
Craft
- Hydration reminders scaled to how hard the session was.
- Streaks and weekly summaries instead of a wall of numbers.
- Timers and onboarding that survive the app being closed mid-session.
Outcome
On sale since April 2026 and now at version 2.0.2, which also gave it its current App Store name.