Bangle.js 2 vs Garmin fēnix 8: which lets you own your data?

Bangle.js 2 scores higher for data ownership (85 vs 78). They differ on official api, home assistant.

Bangle.js 2Garmin fēnix 8
Score85/100 (Great)78/100 (Great)
Official API ⚡Open API (25/25)Partner/business only (10/25)
Data exportLocal raw files (25/25)Local raw files (25/25)
Gadgetbridge / open firmwareSupported (20/20)Supported (20/20)
Home Assistant ⚡None (0/15)Community (HACS) (8/15)
SubscriptionNot needed (15/15)Not needed (15/15)
SubscriptionNoneNone

⚡ = where they differ.

Bangle.js 2

Open-source, hackable JavaScript smartwatch. Full Gadgetbridge support and no account at all. The gold standard for data ownership, traded off against polish and sensors.

API · Export · Home Assistant

Garmin fēnix 8

Activities are standard FIT files you can copy over USB. Gadgetbridge supports the fēnix 8 without Garmin Connect. The official Health/Activity APIs need business approval. Garmin Connect+ is optional.

API · Export · Home Assistant

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Scores come from each device's cited sources, last verified 2026-10-20. See how we score.

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