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On the recordRead 2 Oct 202614 facts
JustATuner
Plans and prices
Free
Free
Desktop tuner and just-intonation drone · open source
Read 2 Oct 2026 · stohrermusic.com
On the record
- Downloads and signing
- Downloads are hosted on GitHub, and the maker says the app is not signed with a developer certificate, so the operating system may show a warning.stohrermusic.com · read 2 Oct 2026
- Drone practice
- The drone supports root, root-plus-fifth, major-triad, and minor-triad voicings, with a pure sine or harmonic-stack sound.stohrermusic.com · read 2 Oct 2026
- Instrument support
- Transposition options include Concert, B♭, E♭, and F, and pitch-detection presets cover saxophones, voice, brass, and strings.stohrermusic.com · read 2 Oct 2026
- Interval analysis
- A live meter reports the just-intonation interval and cents difference, and marks LOCKED within 5¢ of just intonation.stohrermusic.com · read 2 Oct 2026
- Linux requirement
- Linux use requires PortAudio, and the downloaded binary may need its executable permission set.stohrermusic.com · read 2 Oct 2026
- Maker
- The software page identifies Matt Stohrer as the maker; his About page says he moved to North Carolina in 2010 and lives between Durham and Hillsborough.stohrermusic.com · read 2 Oct 2026
- Microphone and headphones
- The app listens to a microphone for pitch detection; the maker recommends a quality microphone and strongly recommends headphones when the drone is on.stohrermusic.com · read 2 Oct 2026
- Pitch settings
- Users can configure reference pitch, instrument transposition, per-wheel cents bias, and per-ring octave bias.stohrermusic.com · read 2 Oct 2026
- Product
- JustATuner is a free, open-source desktop tuner for musicians with a stroboscopic tuner and a just-intonation drone.stohrermusic.com · read 2 Oct 2026
- Source code
- The source code is available on GitHub for inspection.stohrermusic.com · read 2 Oct 2026
- Stroboscopic tuner
- Its chromatic tuner has 12 wheels, one for each pitch class, with seven concentric rings per wheel.stohrermusic.com · read 2 Oct 2026
- Support
- The maker lists [email protected] for questions or feedback.github.com · read 2 Oct 2026
- Supported systems
- The maker lists Windows, macOS on Apple Silicon, and Linux; the macOS app is for M1, M2, M3, and M4 chips.stohrermusic.com · read 2 Oct 2026
- Visualizer
- The drone’s Lissajous display visualizes interference between the played note and drone, with configurable phosphor color, trace thickness, trail count, and resolution.stohrermusic.com · read 2 Oct 2026
