Pedro Daniel Macalupu Cumpen

Professional Tuners for Charango & Guitars

Professional Tuners for Charango, Ukulele & Banjo

Professional Tuners for Guitars, Bass, Ukulele and Banjo!

Professional Guitar Tuners

Professional Tuners for Banjo, Ukulele, Bandurria & Mandolin!

Professional Tuners for Violin, Viola, Cello & Double Bass

Metronome Pro & Tempo

Banjo Tuner Basic

Bass Tuner Basic

Mandolin Tuner and Chords

Sanshin Tuner Basic

Cello Tuner Basic