Practice
Box, 4–6, or a max hold.
A live LED timer and a breath visual that expands with you. Pause, skip a phase, or drop into a hold after the exhale.
Everything it takes
to train the breath.
Practice, log, stats, and learn — working together. The hold you finish tonight is the number you beat next week.
Log
Every hold, dated and honest.
Pro writes the log. Pause a month and nothing new is recorded — your history stays. Upgrade again and the book reopens.
Progress
Best, average, total time.
See the number go up — best, average, total time. Stats live in the log book, so they’re Pro.
Learn
The why behind the pattern.
Foundation lessons are free. CO₂ tables wait in Pro when you want the next gear.
2:15
best hold, sitting there in red
18
sessions that actually got logged
24:36
total time under the waterline
4:00
box breathing. equal on every side.
Ready in a breath. Results in a log.
01
Pick a pattern
Box breathing to settle. 4–6 to downshift. Breath hold when you want a number.
02
Breathe on the LED
The rings grow on the inhale and fall on the exhale. You don’t count. The clock does.
03
Save the hold
Tap finish. On Pro, the time writes to the log. Off Pro, you still practiced — it just doesn’t enter the book.
More than a timer.
At a price you keep.
Free
$0
Practice every pattern. Holds are not logged.
- • Box and 4–6 breathing
- • Breath hold timer
- • Foundation lessons
- • No log book access
Pro
$59.99
per year · or $7.99/month
- • Every hold written to your log book
- • Full history, stats, and time filters
- • History is kept if you pause — access returns when you resubscribe
- • Advanced learn library
ready when you are