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Mobile app · Audio & music

Salmon

An open-source guitar tuner that just works.

  • Completely free
  • Android
  • Open source

Overview

Salmon is a tuner and metronome mobile app, available on Android.

Features described in its F-Droid listing and in its GitHub repository: offline use.

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
  • “An open-source guitar tuner that just works” — F-Droid, 10 November 2026
  • “A fast, offline-first, open-source guitar tuner for Android.” — GitHub, 10 November 2026

At a glance

All of Salmon is free: no feature is locked behind a paid plan, and its code is open.

Its licence (MIT) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

  • Open source code
  • No advertising
  • Commercial use allowed

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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