Harmony Calipers

Visual songwriting companion

$4.99 · Designed for iPad

Turn chord ideas into complete songs. Explore harmony visually, build songs by section, export charts or PDF song packs — now with piano staff and keyboard voicing views. Harmony Calipers is a visual songwriting companion for musicians. Use the Circle of Fifths as a harmonic map to explore chord relationships, build progressions, arrange song sections, and export clean chord charts or PDF song packs. Harmony Calipers is designed for musicians working with a real instrument nearby. Sit at a piano, hold a guitar, mandolin, ukulele, banjo, or another chordal instrument, and use the app to organize harmonic ideas into playable song forms. What you can do with Harmony Calipers: Explore chord relationships Use the harmony wheel to see how chords relate across the Circle of Fifths. Select tonal centers, compare harmonic distance, and view relationship paths directly on the wheel. Browse suggested progressions Start from suggested chord progressions organized by musical function, mood, and relationship type. Color badges help identify functional harmony, stable diatonic movement, dominant tension, caliper-derived ideas, and progressions that may need review. Customize progressions Send any suggested progression into the Custom Progression builder. Edit the title, chord sequence, tonal center, mode, and harmony type, then validate the result. Build songs by section Use Song Builder to arrange progressions into song forms. Add sections such as Intro, Verse, Chorus, Bridge, Break, Interlude, and Outro. Reorder sections to shape the structure of the song. View chord charts Harmony Calipers includes piano keyboard charts, piano staff notation, combined staff/keyboard views, and fretted instrument charts for guitar, mandolin, mandola, ukulele, baritone ukulele, and banjo. Export your work Export full song charts, individual section sheets, traditional chord chart layouts, modern Harmony Calipers layouts, and PDF song packs. Designed for visual writing Harmony Calipers does not try to replace your instrument. It helps you see harmonic relationships, organize chord ideas, and create usable charts so you can play, revise, and develop songs with your own instrument. Good for: - Songwriters building chord progressions - Guitarists, pianists, and multi-instrumentalists - Music theory learners - Teachers creating chord examples - Players exploring the Circle of Fifths - Musicians who want clean printable chord charts - Anyone turning harmonic ideas into organized song forms New in this version: - Optional piano staff notation - Combined piano staff and keyboard view - Improved piano voicing display - great for beginners and all skill levels - Better piano chart exports - More reliable export pagination for staff/keyboard chart packs Harmony Calipers turns harmonic ideas into organized song forms.

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Harmony Calipers 1.1 adds a major upgrade for piano players and songwriters. New piano notation views: - Added optional piano staff notation for playable voicings. - Added a combined Staff + Keyboard view. - Improved the piano voicing display with clearer Bass, Treble, and Chord Tones sections. - Staff notation now displays chord tones as simultaneous vertical sonorities instead of melodic/arpeggiated sequences. - Improved sharp and flat accidental placement in staff notation. Improved piano exports: - Added piano Staff and Staff + Keyboard options to chart exports. - Improved PDF song pack support for piano staff notation. - Added smarter pagination for larger piano chart exports so Staff + Keyboard charts remain readable. Workflow and UI improvements: - Improved picker and dropdown stability across iPhone and iPad. - Refined the progression selection workflow. - Improved the connection between Suggested Progressions, the Harmony Wheel, Custom Progression, and Song Builder. - Improved iPhone and iPad layout behavior for building songs by section. This release makes Harmony Calipers more useful for musicians who want to see playable piano voicings as keyboard charts, staff notation, or both.

Version 1.1

The developer, Salvatore Angelone, 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.

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    Accessibility

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

    Information

    Seller
    Salvatore Angelone
    Size
    9.9 MB
    Category
    Music
    Compatibility
    Requires iOS 16.0 or later.
    • iPhone
      Requires iOS 16.0 or later.
    • iPad
      Requires iPadOS 16.0 or later.
    • Mac
      Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © Copyright Salvatore Angelone 2026
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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