The app reads your fitness band and Apple Health, and turns those readings into three numbers you can act on.
Thallos V4, V5 and V8 bands — 10,000 ₽ right now. Already wearing a band or an Apple Watch? Just get the app.
Home screen
Every morning the app recalculates your night data and shows what you are capable of today.
Stages, efficiency and time in bed — down to the minute.
Readiness based on heart rate variability and resting heart rate.
What you have already spent — and what today still allows.
Sleep
Deep, REM and light sleep, awakenings, bedtime and how consistent your schedule is. You see not just how long you slept, but what that sleep was worth.
Data arrives from a band, a ring or Apple Health — the app picks the most accurate source itself and never counts one night twice.
Energy
Heart rate variability, resting heart rate, sleep quality and yesterday's strain add up to a single percentage. It honestly drops after a hard week and climbs back once you have recovered.
The app tells you which kind of day this is — push or rest.
Strain and workouts
Heart rate zones, calories and live BPM during training. Workouts are pulled in from Apple Health, and chest straps such as Polar H10 connect directly.
By evening you can see what the day cost you — and whether there is room for one more session.
AI assistant
“Why am I tired?”, “Can I train today?”, “Break down my sleep over the last few nights” — the assistant sees your history and answers from it, not with generic advice.
You can ask by voice, or through Siri without opening the app.
Nutrition
Photograph your plate or describe it in words — the app works out calories and macros. The balance lines up with what you actually burned, by day, week and month.
Burn is not guesswork: basal metabolism plus activity from your band and your workouts.
Forecast
The app works out your biological age and life expectancy from your metrics and habits — and shows exactly what is shortening it and what is adding to it.
Ask it yourself
Pick a question on the left and watch how the assistant answers when it has your own numbers in front of it.
This is a sample answer — in the app it is built from your real data.
“I slept badly” is not an explanation.
Variability of 41 against your usual 89. Resting heart rate +6. Deep sleep 42 minutes instead of the usual 78.
That is what sits behind the word “wrecked”.
The difference is simple: you can do nothing with a feeling, but you can do something with a number. Thallos does not motivate you and does not praise you. It shows what happened to your body overnight, and what follows from it.
What changes
A lab printout is a column of numbers that tells you nothing. Photograph it: the app reads your blood, hormones, vitamins and lipids, shows what is in range, what sits on the edge, and how it has moved from test to test.
A challenge with friends holds better than willpower. Steps, calories, kilometres — weekly or monthly.
A drink on Thursday, late coffee, a hard session before bed. Individually, nothing. The journal ties them to your recovery and surfaces the pattern you would never spot yourself.
A wrist band measures variability as well as it can. When you need real precision, connect a Polar H10 or another Bluetooth sensor and take a manual reading. Every measurement is kept, so the trend is visible over the long run.
“Thallos, how did I sleep?” — and Siri answers. Or just put your metrics on the home screen.
Your whole history exports to a file with one button, and the account with every record in it is deleted in two taps inside the app. No “email support to leave”.
How to start
A band, a ring or a chest strap over Bluetooth — or simply allow access to Apple Health if you wear a watch.
Nothing to configure. The app collects your night data in the morning and picks the most accurate source itself.
Three numbers, and an explanation of what sits behind them. Every night makes it sharper — the app tunes itself to your own baseline.
Privacy
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advertising trackers in the app. We show no ads and build no advertising profiles from your data.
£0
is what the app costs. Every feature is free — no subscription, no paid tiers.
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taps to delete your account together with all of its data, right inside the app.
Exactly what we collect and who we share it with is spelled out, without legal fog, in the privacy policy.
Your body speaks to you every night.
All that is left is to listen.
Download
Every feature is available from the start: no subscription, no paid tiers, no ads.
Android version coming soon