Tap the Listen tab, then tap the Listen button. Grant microphone access when prompted, then strum a chord on your guitar. Chordpeek shows the chord name, confidence bar, detected notes, and a fingering diagram in real time. A "This chord is…" strip below the card shows which keys the chord belongs to and its harmonic function.
Support
Chordpeek Support
Help and contact information for Chordpeek 1.2.
When a chord is detected live or viewed in the Library, Chordpeek shows up to three diatonic keys that contain the chord, its roman-numeral degree (I, IV, V, vi, etc.), and its harmonic function — Tonic (stable), Subdominant (movement), or Dominant (tension). The same section appears on each chord's detail page in the Library.
Tap the bookmark icon on any chord tile in the Library or on the chord card in Listen to save it. Your saved chords appear under the "Saved" filter pill in the Library. Favorites are stored on your device and survive app restarts. Tap the bookmark again to remove a chord.
Open the Progressions tab and pick a key. The seven diatonic chords appear as tiles — tap any to see its full fingering. Tap a named progression to expand it and see example songs and chord-by-chord navigation.
Open the Capo tab. Use Shape → Key to find what key a given shape + capo position produces. Use Key → Shape to find which open-chord shapes and capo positions get you to any key you need.
Go to Settings → Privacy & Security → Microphone and make sure Chordpeek is enabled. If the Listen button starts but no chord appears, check that your guitar is audible near the phone and the room is not too noisy.
Chordpeek works best with clearly strummed open-position chords. Let the chord ring for at least half a second. The app requires the microphone to pick up at least two or three distinct pitch classes from the chord to make a confident match.
Email the App Store product page with your device model, iOS version, and a short description of what happened.
Common Questions
Does Chordpeek require an account?
No. There is no account, login, or sign-up of any kind.
Does it work offline?
Yes. Chord recognition, the chord library, the progressions reference, the capo calculator, key context analysis, and favorites all work with no internet connection.
Does it record my playing?
No. Audio is analyzed frame by frame and discarded immediately. Nothing is stored or sent anywhere.
Which chords can it recognize?
Chordpeek recognizes 30 chord shapes: open majors, minors, dominant 7ths, major 7ths, minor 7ths, suspended 2nds and 4ths, add9 chords, and diminished.
What does Tonic / Subdominant / Dominant mean?
These are the three harmonic functions in Western music. A Tonic chord (like I or vi) is the stable home chord. A Subdominant chord (like IV or ii) creates gentle movement away from home. A Dominant chord (like V or V7) creates tension that wants to resolve back to the tonic — it's the engine of chord progressions.
What changed in version 1.2?
Two new features: Keys & Function (shows which diatonic key a detected chord belongs to and its harmonic role — Tonic, Subdominant, or Dominant) and Favorites (bookmark chords you're learning, with a Saved filter in the Library).
What changed in version 1.1?
The chord library grew from 12 to 30 chords. Two new tabs were added: Chord Progressions (diatonic chords and named progressions for 7 keys) and Capo Calculator (shape-to-key and key-to-shape transposition).