Join the Stamio beta

Stamio brings sports-watch metrics to your Apple Watch: VO2 max, training load and status, readiness, energy, sleep score, race predictions, and a training plan that adapts to you. Before its App Store release, we're looking for testers.

Who we're looking for

You need an Apple Watch (Series 6, SE 2nd generation, Ultra or newer, on watchOS 11 or later) and an iPhone on iOS 18 or later. Every profile counts, especially:

women, seniors (60 and over) and beginners;
regular runners as well as competitive ones;
English speakers who think in miles;
people who do other sports (cycling, swimming, strength…);
people who also wear another watch (Garmin, Coros, Polar, Suunto…) every day: it's the best way to check the calculations.

What you'll do

Install Stamio with Apple's free TestFlight app and wear your watch day and night for 3 to 4 weeks.
Tell us what you think: what you like, what confuses you, what looks wrong (TestFlight's "Send Beta Feedback" button, or by email).
If you want, send an export of your calculated values from the app, with your explicit consent: never your raw measurements, your location or your name. Details are in the privacy policy, "Beta version" section.

What's in it for you

Stamio before anyone else, and a say in what it becomes.

Sign up

Write us a few lines: your age, your watch (and the other one if you wear one), your level and your sports. We pick testers to cover every profile, then send you a TestFlight invitation.

Stamio is not a medical device: its values are estimates to help you train.