Chapter 10 · Wearables

Your watch, on the same page.

Connect any Bluetooth heart-rate device — Mi Band, Fitbit, Garmin, Apple Watch (via companion), Polar, Wahoo — and stream live BPM straight into your Twin.

Web Bluetooth pairing isn't available in this browser.

This is a browser-level restriction, not a bug on our side. Safari (iPhone / iPad / Mac) and Firefox don't support the Web Bluetooth API. On iPhone / iPad, every browser is forced to use Safari's engine — so Chrome for iOS won't help either.

iPhone / iPad

Install Bluefy (free)

Then open silentscan.ai inside Bluefy.

Android

Chrome or Edge

Works out of the box.

Desktop

Chrome or Edge

Windows · macOS · Linux.

Meanwhile, you can log heart-rate readings from your watch face manually below — they'll still sync to your Twin.

Bluetooth device

Not connected

Make sure your watch is nearby and Bluetooth is on. We only read heart-rate + battery.

Live heart rate · last 60 samples

Pair a device to see live samples here.

Steps sync

Steps aren't part of the standard BLE profile, so we sync them two ways: type today's count from your watch, or import an export file from Apple Health (.xml) or Google Fit (.csv).

Manual sync

Import from Apple Health / Google Fit

Choose a .xml or .csv export…

We parse the file in your browser — nothing is uploaded.

What connects

Mi Smart Band 8 / 9

Fitbit (with BLE HR)

Garmin Forerunner

Polar Verity / H10

Wahoo TICKR

Coros Pace

Apple Watch (via BLE relay)

Any BLE HRM

The browser handles the pairing dialog. We only receive heart-rate values you consent to share — nothing else on the watch is accessed.