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SMALL READINGS. LASTING RECORD.

Fitbit Web API shuts down in a few days ↓

Every heartbeat,
kept.

Heart rate, sleep, HRV and activity from Fitbit and Google, kept minute by minute in one private timeseries that you own.

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01 / 06

Minute by minute

Every reading, not a daily average.

Heart rate per minute with its range, back to your first day.

  • Per minute
  • Lowest & highest
  • Never duplicated

Compared to you, not to averages.

Each signal sits inside your own 30-night range.

  • 30-night baseline
  • No opaque scores
  • Flags only what’s unusual

The whole night, not just the total.

Every stage kept with its exact start and end.

  • Crosses midnight
  • Naps apart
  • Classic logs too

Nothing merged. Nothing lost.

Each source keeps its own line, so disagreements stay visible.

  • Per-source lines
  • Tables behind charts
  • Read-only API

Your history, walked backwards.

Today first, then every day back to the start, at the provider’s pace.

  • Newest first
  • Resumes after pauses
  • Takeout fills gaps

One quiet page for the day.

Goals you choose and your body against its normal.

  • Sleep & steps goals
  • Body in range
  • Chart to table
THE APP · EXAMPLE DATA

Built to be looked at.

Heart rate, every five minutes
30 days at a glance
Last night, stage by stage
Two sources, never merged
WORKS WITH
a few days
TIME-SENSITIVE · OCT 30, 2026

The Fitbit Web API shuts down soon.

BetterChimp saves your full-resolution history while it still can.

Connect Fitbit now
HOW IT WORKS

Three steps, then it runs itself.

  1. 01

    Connect

    Google Health and Fitbit, read-only.

  2. 02

    Backfill

    Today first, then back to day one.

  3. 03

    Explore

    Any metric, any source, any range.

WHAT IT MEASURES

Four families of signal.

HEART

Heart rate per minute · resting HR

BODY

HRV · breathing · SpO₂ · skin temp · weight

SLEEP

Stages · time asleep · bedtime · efficiency

ACTIVITY

Steps · distance · floors · calories

YOURS, END TO END

Private by design.

No ads, no selling

Used only to show it to you.

Encrypted tokens

AES-256-GCM, read-only access.

Owner-only sign-in

Approved Google accounts. No passwords.

Open data

Query, chart or export every reading.

QUESTIONS

Good to know.

Can I sign up?

Not yet. BetterChimp is invite-only while it’s built out, and sign-in is limited to approved Google accounts.

What happens when the Fitbit Web API shuts down?

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.

Does BetterChimp change anything in my Fitbit or Google account?

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.

Where is my data stored?

In a Cloudflare D1 database that belongs to this BetterChimp deployment. Provider tokens are encrypted at rest. See the privacy policy for details.

Is this a medical device?

No. BetterChimp shows what your devices measured. It doesn’t diagnose, treat or give medical advice.

Start keeping
everything.

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