Harmony Keyboard vs PureTune Keys

Train perfect intonation with just intonation. Harmony Keyboard is a powerful practice tool designed for musicians who want accurate tuning and beautiful harmony. It helps you hear and practice chords using both just intonation and equal temperament, making it ideal for ensemble rehearsal, wind band practice, choir training, and ear training. Whether you're a student, performer, or teacher, Harmony Keyboard helps develop a better sense of pitch and harmonic balance. KEY FEATURES • Just Intonation & Equal Temperament Switch between tuning systems to understand how harmony and tuning work in real music. • Intonation Training Practice tuning chords and intervals to develop a precise musical ear. • Instant Transposition Transpose instantly to any key for flexible practice. • Hold Function Sustain notes and chords while listening carefully to intonation and balance. • Wind Instrument Sounds Includes sounds such as flute, clarinet, and saxophone for realistic ensemble practice. • Customizable Tuning Adjust reference pitch (e.g. A=442Hz) and note name display. PERFECT FOR • Wind band practice • Brass and woodwind players • Choir rehearsal • Ear training • Music students and teachers Harmony Keyboard is a simple yet powerful tool for musicians who care about tuning, harmony, and musical precision.

PureTune Keys is a keyboard for playing and comparing equal temperament and just intonation. Hear the difference in intervals and chords directly on the on-screen keyboard. A supported wired USB MIDI keyboard can also be used. FEATURES • Switch between equal temperament and just intonation • Choose major or minor • Select a root key • Adjust the waveform, master pitch, and volume • Sustain notes after releasing the keys • Shift the keyboard octave • See active notes and tuning offsets • Stop every note instantly with the Off button The free version includes Root C. A one-time Pro purchase permanently unlocks the other 11 root keys. This is not a subscription. MIDI hardware is optional. Every feature can be reviewed with the on-screen keyboard.