Terms of use
LAST UPDATED 11 SEPTEMBER 2026
What this is
Winter Arc is a personal training and diet tracker that runs in your browser. It is provided as-is, at no cost, with no account and no subscription. Using it means you accept these terms.
Not medical or dietary advice
Winter Arc records what you tell it and does arithmetic on it. Calorie targets, BMR, estimated energy expenditure and estimated one-rep max are rough calculations from standard formulas, not measurements, and not advice. Talk to a doctor or a qualified dietitian before changing how you train or eat, especially if you have a health condition, are pregnant, or are recovering from injury. Stop and seek help if something hurts.
Your data and your device
Everything you log is stored in your own browser. There is no server holding your training history. That also means it can be lost: clearing site data, uninstalling the browser, or a device failure will take it with it. Export a backup from the System screen regularly. You are responsible for keeping your own copies.
Availability and changes
Features may change and the app may be unavailable at times. If a future version adds optional sync to a server, it will be opt-in, and these terms will be updated before it ships.
Liability
To the extent the law allows, Winter Arc is provided without warranties, and its authors are not liable for injury, lost data, or any other loss arising from using it.