About
Your body shouldn't come with a subscription
Gallen is built on one idea: you should be able to understand your own sleep, recovery and strain without paying every month for it. The numbers are worked out on your phone, and every formula is published.
The mission
Understanding, not a membership
Your strap or ring already measures your heart, your sleep and your movement. Gallen reads that data over Bluetooth and works out the numbers on your phone, so making sense of them doesn't depend on a monthly plan. It is free during the beta, and we'll tell you before anything changes.
Gallen is built by an independent developer. [Placeholder: the developer's own words, if wanted]
In plain facts
What is true today
Nothing more, nothing less.
Worked out on your phone
Sleep, recovery, strain and steps are calculated on the phone itself.
Raw data stays on your phone
Heart rate, beat-to-beat intervals and motion stay on the phone.
Backups only you can open
Backups are encrypted with a password only you know.
HTTPS connections
Connections to Gallen's servers use HTTPS.
Open formulas
Every formula and constant is published, with its limits.
Free during the beta
No subscription during the beta. We'll tell you before anything changes.
One thing to know: sync is optional. If you turn it on, your derived daily numbers (scores, charts, journal and workouts, never raw sensor data) are stored on Gallen's server, where the server can read them. They are not end-to-end encrypted.
The name
Named after a careful observer of the body
Galen of Pergamon · born 129 AD, died c. 216 AD
Galen was a physician, surgeon and philosopher in the Roman Empire, born in Pergamon in September 129 AD. The year of his death is debated; around 216 AD is the most cited.
At 28 he became physician to the gladiators in Pergamon. He relied on direct observation and dissection, and his writing shaped Western medicine for more than 1,300 years.
Gallen borrows only the idea: notice the signs your body already gives, and look at your own data carefully. It is not a medical tool, and the name implies no medical authority or endorsement. The double-l spelling, Gallen, is our own.
Principles
What we hold to
Six rules that decide what goes into the app, and what stays out.
Calm over alarm
Plain words and soft colours. No streaks to protect, no red alerts for an ordinary day.
On your phone first
Your numbers are worked out on your phone. Raw sensor data stays there.
Open about the maths
Every formula and constant is published, with what it was fitted to.
Honest about limits
Estimates are labelled as estimates. Nothing here is medical advice.
Independent
Built by an independent developer. Not affiliated with or endorsed by any device maker.
Your data, your call
Export it or delete it whenever you like. Backups are encrypted with a password only you know.
Who builds it
Built by an independent developer
[Placeholder: name and a line in their own words, if the developer wants to be named]
[Placeholder: name]
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Try the Gallen beta
Free during the beta. Android now, iOS later. You sign in with a code sent to your email, no password.