open for testing
Help me shape an app for heat and cold
A clickable prototype for sauna, hot and cold showers, plunges and open water. 10 to 15 mi
About
Hi 👋, my name is Thanh, and I do heat and cold, often back to back. And I keep wondering what it's doing to my health in the long run. How does my body actually react? Is it doing me any good?
A feeling can't tell you that, and the long-term research is thinner than the hype.
So I'm building the app I wanted, for heat, cold or both. It times every phase, even while your Watch is off in the sauna. It captures how your body reacts in the cold and how long your heart rate takes to settle. And session after session, it shows how that changes, against your own history and nobody else's.
A clickable prototype for sauna, hot and cold showers, plunges and open water. 10 to 15 minutes, best on a laptop.
What to test
If you already do heat or cold, just be yourself. When the app asks what you have, pick what's true, even if it's only a hot shower.
Never tried any of it? Then picture this. You work out a few times a week, and a friend got you into a studio with a sauna and an ice bath. Your first session is on Saturday. You've just downloaded Leuto to guide you, and you're curious how your body will handle it.
How the test works
Explore. Leuto is right there on screen, clickable, with made-up data. Tap around like you would with an app you just downloaded. Not everything works yet, and that's fine. React. Under the phone, a small label says which screen you're on. The bar at the bottom of your screen shows the same screen. Tap how it felt, and add a few words. Tell me. A few quick questions at the end.
Your answers save as you go, so you can stop anytime and come back later.
🔒 Credentials and install steps unlock when you claim the test.