BetterChimp pulls heart rate, sleep, HRV and activity from Fitbit and Google into one private timeseries: minute by minute, back to the first day you wore a tracker, compared against your own normal.
Invite-only. Your data is never sold, shared or used for ads.
Heart rate arrives as fine as one sample per second and is stored per minute with its lowest and highest values. Steps, distance and calories are kept by the minute, too, so a day can be read the way it was lived.
HRV, resting heart rate, breathing, blood oxygen and skin temperature each sit inside your own 30-day range. You can see at a glance what’s typical for you and what isn’t. There are no opaque scores or invented numbers.
Every awake, REM, light and deep stage is kept with its exact start and end, so you can see how a night unfolded, compare nights, and spot what changed.
Each source keeps its own readings, so a Fitbit export, the Fitbit Web API and Google Health can disagree in plain sight. Charts always say where a number came from.
Google is turning off Fitbit’s original API on October 30, 2026, and with it the easiest way to get your history at full resolution. BetterChimp pulls every day it can, within Fitbit’s rate limit of 150 requests an hour, while there’s still time. After that, Google Health and Takeout exports keep things going.
Connect Fitbit nowSign in with Google, then connect Google Health and, while it lasts, the Fitbit Web API. Read-only access, and you can disconnect at any time.
Every ten minutes, BetterChimp keeps today fresh and walks your history backwards to the day you started, pausing politely at each provider’s rate limit.
Today shows your progress and your body against its normal. Trends charts any metric from any source over any range. An API serves it all to your own tools.
Your health data is used for one thing: showing it to you. It’s never sold, shared or used to train anything.
Provider tokens are encrypted with AES-256-GCM and bound to your account. Access is read-only.
Only approved Google accounts can sign in. There are no passwords to leak or reset.
Every reading is a timeseries you can query, chart or export, with the source and units attached.
Not yet. BetterChimp is invite-only while it’s built out, and sign-in is limited to approved Google accounts.
Everything already collected stays. Google Health keeps collecting new Fitbit and Pixel data, and Fitbit or Google Fit exports from Google Takeout can fill in older history.
No. It asks only for read-only access and never writes back. You can revoke access from BetterChimp or from your Google account at any time.
In a Cloudflare D1 database that belongs to this BetterChimp deployment. Provider tokens are encrypted at rest. See the privacy policy for details.
No. BetterChimp shows what your devices measured. It doesn’t diagnose, treat or give medical advice.