Rosin

One sentence

Rosin is a premium tuner for bowed strings that lets players tune in pure intervals, not compromises.

One paragraph

Rosin is a tuner app built specifically for violin, viola, cello, and double bass players. Alongside standard chromatic tuning, it offers Just Intonation, historical and folk scordatura presets, configurable reference pitch including 415 Hz and 442 Hz, reference tones, and drone practice tools in a high-contrast interface designed to remain readable on a music stand.

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