Your Data Fused

Your Data, Fused — one honest record across your bands

If you wear more than one device — say a WHOOP plus a Mi Band for steps, plus Apple Health or Health Connect on your phone — those normally sit in separate silos. "Your Data, Fused" pulls them into one record, on your device, picking the best source per metric, naming that source on every number, and flagging disagreement instead of quietly averaging it away.

It's the privacy-respecting inverse of a cloud aggregator: a cloud service "unifies" your data by routing your raw biometrics through their servers. NOOP fuses everything locally — nothing leaves the device.

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What you need

• Two or more sources contributing data: a WHOOP, a second band (e.g. Mi Band / Xiaomi), and/or an Apple Health / Health Connect import. With just a single WHOOP it still works — it simply shows a clean plain record with no source-noise.

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How to open it

From Health (or Data Sources), open "Your Data, Fused."

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Reading the fused record

For each core metric you get one row:

Resting HR   52 bpm    ● from WHOOP        (Apple Health agrees: 53)
Steps     8,420        ● from Mi Band      (counts directly · strap estimate hidden)
Sleep      7h 12m      ● from WHOOP        ⚠ Apple Health says 6h 40m — tap to compare
Skin temp  34.1 °C     ● from WHOOP
HRV          68 ms     ● from WHOOP        (no second source)

• Winning value — the best-sourced number.
• Provenance pill — which source it came from ("from WHOOP", "from Mi Band").
• A one-line reason when "best signal" needs justifying — "counts directly" (a band's pedometer beats the strap's step estimate), "best stager" (a better sleep source beats phone sleep buckets).
• Agreement inline:
  • agree → a quiet parenthetical ("Apple Health agrees: 53").
  • differs slightly → both values shown, neutral.
  • conflict → a ⚠ chip and "tap to compare", which opens Compare sources — every source's value side by side, which one NOOP is using, and why (its trust tier). NOOP never silently averages a conflict.

There's also a day badge — "Today's record owned by WHOOP" — because your daily scores (Charge / Effort / Rest) are always computed from a single source, never a mix.

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How "best source" is decided

NOOP ranks sources by how the metric was actually produced, not by brand:

1. A dedicated sensor for that metric (a band that counts steps; a chest strap's HR).
2. NOOP's own on-device computation from your strap's raw streams.
3. A phone aggregate (Apple Health / Health Connect).
4. An estimate / proxy (the strap's step estimate; a calories estimate).

The policy and tolerances are published, inspectable constants — the same transparency that backs Charge / Effort / Rest.

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How to read it honestly

• "Best signal" is not "accurate" or "correct" or "clinical." NOOP says a source is higher-trust for this metric, with a plain reason — it never asserts a reading is true or medically valid.
• A disagreement is a transparency note, not a diagnosis. "Your two bands report different sleep totals" doesn't mean either is medically wrong, and NOOP never flags a number as concerning or out-of-range.
• It introduces no new data collection — it only re-presents data you already imported locally.

Privacy

Everything is fused on your device. There is no account, no cloud, and no normalisation server seeing your data. Nothing leaves the device.