dia - Guitar Chord Diagram

Edit, Play & Export Chords

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Explore, create, and hear guitar chords — with 3,000+ preset voicings and a powerful visual editor. dia is a guitar chord diagram editor that lets you visualize, create, and play chord voicings on your iPhone and iPad. Browse over 3,000 preset chord voicings across 828 chords covering 12 keys and 86 chord types. Tap on the fretboard to build your own diagrams, hear how they sound, and see interval degrees and note names at a glance. KEY FEATURES: • 3,000+ Preset Chord Voicings — Browse chords by key and type, with multiple fingering options for each chord • Visual Fretboard Editor — Tap to place and remove fret dots, toggle open/muted strings, and adjust the starting fret • Audio Playback — Hear your chord diagrams with realistic plucked string sounds and adjustable strum speed • Interval & Note Name Display — See interval degrees (R, M3, P5, etc.) and note names on each dot and across all frets • Custom Tuning — Set any tuning for each string, save tuning presets, and use built-in presets (Drop D, Open G, DADGAD, and more) • Portrait & Landscape Diagrams — Switch diagram orientation to match your preference or device orientation • Image Export — Export diagrams as PNG images with customizable appearance (light/dark mode, transparent background) • Save & Sync — Save your custom diagrams and sync them across devices with iCloud • Left-Handed Mode — Mirror the diagram for left-handed players • String Numbers & All Fret Labels — Display helpers for learning and reference PRO FEATURES (one-time purchase): • Unlimited Saved Diagrams — Free plan allows up to 3 saved diagrams • Auto Chord Detection — Automatically identify chord names from your fret positions in real time Privacy Policy: https://ashnoa.com/dia/privacy-policy Terms of Use: https://ashnoa.com/dia/terms-of-use

Ratings & Reviews

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The developer, Hiroki Asano, 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 Linked to You

    The following data may be collected but it is not linked to your identity:

    • Location
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based 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

Seller
  • Hiroki Asano
Size
  • 8.3 MB
Category
  • Music
Compatibility
Requires iOS 26.0 or later.
  • iPhone
    Requires iOS 26.0 or later.
  • iPad
    Requires iPadOS 26.0 or later.
  • Mac
    Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 26.0 or later.
Languages
  • Japanese
Age Rating
4+
In-App Purchases
Yes
Copyright
  • © 2026 Hiroki Asano
  • Developer Website
  • Privacy Policy
  • License Agreement

    • More by Hiroki Asano

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