Transpose Assistant

Mika Heikkinen

About this app

Transpose concert keys into the written notes and scales your instrument uses. Built for Bb, Eb and F instruments like saxophone, trumpet or clarinet.

What it does

Convert any concert key to the written key for your instrument family (Bb / Eb / F).

Show scales in the written key: Diatonic (major & minor), Pentatonic (major & minor), and Blues.

Useful in band play, jam sessions or just for practice.

Open a Scale Details page: scale notes, scale degrees (1, ♭3, 4, ♭5, 5, ♭7), short descriptions and musical usage.

Offline, fast, and no ads. Light/Dark/System theme.

How to use

Pick your instrument family (Bb, Eb or F).

Choose Major or Minor and select the concert key.

See the written key and three scales; tap for details.

Great for rehearsals, gigs and practice when you need the right notes instantly.

Built for rehearsals, jams, and gigs—open, pick your instrument, get the right key and usable scales instantly.