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Open—Shape
What it is
Open—Shape is a guitar chord and progression tool for finding playable chord shapes across the fretboard, including in alternate tunings. Its chord engine searches for voicings, filters them by note count, and shows difficulty and fingering details. You can chain and reorder chords, play the resulting progression, and save up to three progressions on the free plan. Chords play as recordings of an acoustic guitar. The microphone tuner identifies strings in alternate and custom tunings, while capo settings update the voicings and progressions. Open—Shape includes 33 built-in tunings; its one-time Pro plan adds unlimited custom tunings and unlimited saved progressions for $9.99, paid once. The service is available on iOS and the web. Its Canvas workspace, which brings chords, tuning, and capo settings together on a board, runs in a desktop browser. No account is required, and Settings includes backup export and import for saved tunings and progressions.
For and against
For
- 33 built-in tunings included
- Real acoustic guitar chord playback
- Microphone tuner supports alternate tunings
- Capo settings update voicings and progressions
- Backup export and import in Settings
Against
- Free plan saves up to three progressions
- Canvas runs in a desktop browser
- Unlimited custom tunings require Pro
The verdict
Open—Shape combines chord discovery, progression building, capo settings, and tuning tools for guitar. The free plan covers core features, while Pro removes the limits on saved progressions and custom tunings.
Who it suits
Open—Shape suits guitarists who want to explore chord shapes, build progressions, or work with alternate tunings. The free plan includes up to three saved progressions; Pro is for those who need unlimited saves or custom tunings.
Plans and prices
Free
Full chord engine and every voicing · 33 built-in tunings · real acoustic playback · mic tuner
Read 8 Oct 2026 · openshape.app
Pro
Everything in Free · unlimited custom tunings · unlimited saved progressions
Read 8 Oct 2026 · openshape.app
On the record
- Account and backups
- An account is not required; saved tunings and progressions live on the device, and the app provides backup export and import in Settings.openshape.app · read 8 Oct 2026
- Audio
- Chord playback uses recordings of a real acoustic guitar rather than synthesized tones.openshape.app · read 8 Oct 2026
- Canvas
- Canvas is a visual workspace for connecting chords, tuning, and capo on a board, and runs in a desktop browser.openshape.app · read 8 Oct 2026
- Chord search
- The chord engine searches the fretboard, filters voicings by note count, and labels shapes with difficulty and fingering details.openshape.app · read 8 Oct 2026
- Data collection
- The privacy policy says the service does not collect personal information or use cookies, analytics, or advertising scripts.app.openshape.app · read 8 Oct 2026
- Maker
- The privacy policy lists Michael Gordon Hix as the contact for questions.app.openshape.app · read 8 Oct 2026
- Privacy
- The privacy policy says custom tunings and progressions are stored in browser local storage, and tuner audio is analyzed in the browser and not recorded or transmitted.app.openshape.app · read 8 Oct 2026
- Progressions
- Users can chain and reorder chords, play progressions back, and save them; the free plan allows up to three saved progressions.openshape.app · read 8 Oct 2026
- Support
- Support is by email, and the site says replies usually arrive within a day or two.openshape.app · read 8 Oct 2026
- Tuner and capo
- The microphone-based tuner identifies strings in alternate and custom tunings, and capo settings update voicings and progressions.openshape.app · read 8 Oct 2026
- Tunings
- It includes 33 built-in tunings, and Pro unlocks unlimited custom tunings.openshape.app · read 8 Oct 2026
- What it does
- Open—Shape is a guitar chord and progression tool that finds playable chord voicings across the fretboard in different tunings.openshape.app · read 8 Oct 2026
