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Mobile app · Everyday life

Zelp

Amazfit pairing keys, GPS packs, firmware, and watch apps for Gadgetbridge.

  • Free, with trade-offs
  • Android
  • Open source

Overview

Services and protocols mentioned: Bluetooth.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “There is no self-hosted substitute for those servers.” — F-Droid, 10 November 2026

At a glance

Zelp is free, with trade-offs: it promotes non-free add-ons or purchases, it relies on a non-free online service and it depends on one specific server to work.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • No advertising
  • Commercial use allowed

Weaknesses

  • Flagged by F-Droid: promotes non-free add-ons
  • Flagged by F-Droid: relies on a non-free online service
  • Flagged by F-Droid: depends on the publisher’s online service

Sources and checks

  • Facts collected from F-Droid (credit card, source code, publisher, licence, free status, platforms, ads, commercial use, version) —
  • Last technical check: 6 November 2026
  • Description from F-Droid — F-Droid (citation courte)

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