Learn to precisely tune pitches in randomly generated chords, scales and melodies, using equal temperament or just intonation!

Key features in the Free version:
- Four types of intervals, major and minor chords, and major scales to tune in equal temperament or just intonation
- Training mode which tracks your average error
- Detailed About page describing the just intonation system and listing the ratios used
- Description of Pro features and a link to purchase the full version