Blue Harmonica is a Harmonica Tuner app. It allows you to see in real time what notes you're playing.

Blue harmonica supports following harmonica tunings in any key from low G to high F#:
- Standard Richter (default blues harp tuning)
- Paddy Richter
- Natural Minor
- Harmonic Minor
- Country
- Double Country

This application allows to highlight following music scales in any key.
- Major
- Blues scale
- Dorian
- Harmonic Major
- Harmonic minor
- Major pentatonic
- Melodic minor
- Tritone
- Whole Tone