Privacy Policy

What we store

The username you claim — no email, no real name required.
Your daily battery and session timing data, and the events you log.
If you use Auto-Day: the wake time you set, plus your time zone — the time zone is read from your browser and saved along with the setting, so you don't have to pick it yourself.
A single session cookie, used only to keep you signed in. It is essential and does no tracking.
Your theme choice, stored only in this browser so the page can use System, Light, or Dark.
Whether this browser opened the public Help guide, used only to stop highlighting the “?” button.
Your recovery key — stored only as a hash; we cannot read it back.

Your share link

Anyone holding your public link sees your battery level. If you turn on “Show today's events on my share link” in Settings, they also see today's events: what each one was, what it cost and when you logged it. Past days are never shown, and event sharing stays off until you switch it on.

With Auto-Day on, that level starts draining at your wake time — so someone watching the link can work out roughly when your day began. That's the link doing its job, but it's worth knowing before you hand it out. Auto-Day stays off until you switch it on.

What we don't do

No analytics, no ads, no third-party trackers. Your data is not shared with or sold to anyone.

Where it lives

The app is hosted on Hetzner servers in Germany (EU). If you download a profile snapshot, a copy of your settings and saved tracking day also lives wherever you store that file. The snapshot contains no recovery key or public share link; protect it because it still contains your activity data.

Cookies

We set one essential session cookie and nothing else — that's why there is no consent banner.

Data deletion