See it coming
Your load for the next 7 days, and the day you leave “Overreaching”.
For athletes with a Polar watch
Listen to your body,
with your data.
One more session this week?
Dozone tells you if it fits, before you go.
01Works with Polar Flow
Polar Flow measures.
Dozone plans ahead.
Today · yesterday
Polar Flow
- Your status today
- Your history
- Your sessions
Tomorrow
Dozone
Dozone
- The next 7 days
- “What if I play Thursday?”
- Your plan, your habits, your body
Complementary: the app starts from your Polar Flow data.
02Features
And 5 more things
Beyond the gauge: everything that helps you dose your effort.
Test before you play
A session, a day: the app tells you if it fits.
Warned before you overdo it
Your recurring sessions, and an alert before the week too many.
What the heart can’t see
Feeling, effort, pain, recovery: one tap.
Your habits, read for you
Your good and bad weeks, spotted automatically.
The goal
Dose it right.
Not too much, not too little. At the right time.
To progress without going into the red.
03In 3 steps
How it works
Your watch, your Polar account, and that’s it.
- 1Connect your PolarOnce, in one click.
- 2The app does the mathsEvery day, automatically.
- 3You decideAt a glance, on your phone.
04Screenshots
The app, for real
A web app you install like a real app (Android and iPhone), designed for your thumb. Screenshots with fictional data. App available in English and French.
- Not a medical device
- Always honest about its numbers
- Your data stays private
05FAQ
Your questions
Does Dozone work with my Polar watch?
Dozone reads the data your watch syncs to Polar Flow, through Polar’s official connection (AccessLink). It is made for watches that calculate cardio load (Training Load Pro), such as the Vantage or Grit X ranges.
What is cardio load, and the ratio?
After each session, Polar calculates a cardio load from your heart rate. It then compares your recent load (last 7 days) with what your body is used to (last 28 days). Dozone uses the same principle to show where you stand today and to project the coming days.
How is it different from Polar Flow?
Polar Flow shows what you have done. Dozone looks ahead: 7-day projection, a simulator to test a session before you go, a planning that warns you before the Overreaching zone, a recovery mode and your long-term habits.
Is it a medical app?
No. Dozone is a decision aid for athletes: it is not a medical device and it does not predict injuries. It helps you dose your effort; your body and health professionals have the last word.
How much will it cost?
Dozone will open as a subscription, with a free trial period. The price will be announced at launch: people who signed up will be the first to know.
What happens to my data?
The connection to Polar is the official one: you authorise it and can revoke it at any time. Your data is hosted in France, used only to run the app, never sold or shared, and can be deleted on request.
06Clubs, coaches, physios, companies
A tailor-made need?
This app was built in a few weeks on top of the Polar API. algoralp designs the same kind of tool for you: dashboards for a club or a team, follow-up for a coach or a physio, automations that save hours in your business.
Tell me about your project07Free trial
Try Dozone for free
Dozone opens soon as a subscription. Sign up: you’ll be the first to know and get the free trial.
Made by an athlete, developer at 