Privacy-first weight and body-composition logger. Your measurements never touch a vendor cloud: they live encrypted on your device and back up to your own Nostr relays, NIP-44 encrypted so relays only ever see ciphertext.
Hakari is a privacy-first weight and body-composition logger. Your measurements never touch a vendor cloud: they live encrypted on your device and back up to your own Nostr relays, NIP-44 encrypted so relays only ever see ciphertext.
Features
- Standard Bluetooth GATT scales (Weight Scale 0x181D / Body Composition 0x181B) work fully offline — step on, reading appears
- Full TANITA-style body composition: body fat %, water %, muscle mass, visceral fat, bone mass, BMR, metabolic age
- TANITA Health Planet cloud import (official API) with full-history paging for TANITA scale owners
- Health Connect / Apple Health sync (weight & body fat read/write)
- Workout-readiness & fat-loss-efficiency card from your sleep and activity (research-based, transparent heuristic — tap ⓘ for the methodology)
- Nostr backup: kind 1351 weight events (NIP-101h) plus encrypted kind 30078 full-entry backups; restore from relays on any device
- Amber (NIP-55) signing — the app never sees your key; silent ContentProvider signing under "always approve"
- Tor support via Orbot SOCKS5 proxy
- Encrypted local storage (Keystore-backed), WeightLogger-compatible CSV / JSON export
- No telemetry. No analytics. No accounts.
Summary generated by Zapstore from source.
Original description, as the developer published it.
Latest release
Jul 18, 2026
Claimed app
No Google servicesSource available · MIT
Uses location access to scan for Bluetooth scales.
Permissions
- Fine location ACCESS_FINE_LOCATION See your precise location To scan for Bluetooth scales.
- Nearby devices BLUETOOTH_CONNECT Find and connect to devices around you
Release notes
Fixed
- The Health Planet link dialog no longer pre-fills a built-in client ID that could not work with anyone else's secret; every user enters their own developer credentials (personal builds: --dart-define=HP_CLIENT_ID).
Fixed
- The Health Planet link dialog no longer pre-fills a built-in client ID that could not work with anyone else's secret; every user enters their own developer credentials (personal builds: --dart-define=HP_CLIENT_ID).
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