Scordatura presets
Standard violin, E♭ scordatura, Biber A–E–A–E, Cross A, Sawmill, plus viola, cello, and double bass presets.
Features
A tuner shaped by string playing, not generalized afterward.
Rosin keeps the familiar chromatic workflow available, but its center of gravity is bowed strings: interval-aware tuning, real scordatura presets, reference pitch flexibility, and tools for sustained listening.
Just Intonation
Equal Temperament is not the only useful answer.
In Just Intonation mode, Rosin measures against pure intervals relative to the chosen tonic, so the meter reflects the interval a quartet player is actually settling rather than only the piano compromise beneath it.
| Interval | Ratio | vs ET |
|---|---|---|
| Perfect fifth | 3:2 | +1.96¢ |
| Major third | 5:4 | −13.69¢ |
| Minor third | 6:5 | +15.64¢ |
| Major sixth | 5:3 | −15.64¢ |
Reference pitch
Move cleanly between 415 Hz baroque pitch, 440 Hz, 442 Hz, and other ensemble standards.
Reference tones
Use instrument-like reference tones when matching pitch by ear matters more than staring at a meter.
Drone mode
Practice against sustained tones across twelve chromatic notes and octaves 2–5.
Stand-readable interface
Large high-contrast information remains legible from two to three feet away.
Fast response
Low-latency pitch detection is tuned for bowed-string timbres and precise meter feedback.