HarmoTuner

Music

Free · Designed for iPad. Not verified for macOS.

Choose a target chord and compare each tone with its just-intonation position. Built for ensemble rehearsal, with a precise single-note tuner and metronome. HarmoTuner is a tuner and metronome designed to help ensembles explore harmony through just intonation. Alongside precise single-note tuning, HarmoTuner lets you choose a target chord and compare the current position of each chord tone with its just-intonation target. Use it for individual long-tone practice or for shaping intonation and resonance in wind bands, orchestras, chamber groups, and other ensembles. CHORD TUNING Choose a target from 96 chords, including C, Am, G7, and CM7. HarmoTuner detects up to four input tones and displays a separate gauge for each role in the chord, such as the root, third, fifth, and seventh. In addition to the deviation from equal temperament, a target marker shows where each tone sits in just intonation. You can also find possible chords by selecting the note names you hear, making it easy to choose a target even when you do not know the chord symbol. SINGLE-NOTE TUNER View the note name, frequency, and deviation in cents from the selected reference in real time. • Adjustable A4 reference pitch • Equal temperament, just intonation, Pythagorean tuning, and meantone temperament • Adjustable input sensitivity and lock sensitivity • Lock indicator for a stable pitch • Reference tone with selectable note and octave • Analysis display for waveform and harmonic content Use it not only for tuning an instrument, but also for long tones and for checking the stability of embouchure and breath support. METRONOME Set the tempo, meter, and subdivision, then follow the beat through sound and visual feedback. • 30–300 BPM • Meters from 1/4 to 10/4 • Quarter-note, eighth-note, triplet, and sixteenth-note subdivisions • Tap tempo • Tempo marking display • Optional screen-edge beat flash Practice intonation and tempo without switching between apps. THREE FOCUSED MODES Open Tuner, Chord, or Metronome directly from its own tab. HarmoTuner remembers your most recently used mode and settings, so you can get back to practice quickly. PRIVACY All microphone input is analyzed on your device. HarmoTuner does not save recordings, transmit audio to external servers, or collect personal information.

Ratings & Reviews

  • This app has not received enough ratings or reviews to display an overview.

• Reorganized the app into three tabs: Tuner, Chord, and Metronome • Made chord tuning quicker and easier to access • Improved the target chord display for better readability • Improved audio analysis performance and metronome stability

Version 1.2

The developer, Shunsuke Hosomi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary based, for example, on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Provider
    • Shunsuke Hosomi
    Size
    • 969.7 KB
    Category
    • Music
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English and Japanese
    Age Rating
    4+
    Copyright
    • © 2026 Shunsuke Hosomi
  • Developer Website
  • Privacy Policy

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