ChordFrog: Piano Ear Training
Chord Recognition Quiz Game
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
ChordFrog trains your ear to recognise chords by sound — no instrument or extra gear required. Play audio quizzes anywhere, then connect a MIDI keyboard (USB or Bluetooth) whenever you want hands-on practice on real keys.
PRACTICE MODES
• Leap Quiz — no keyboard needed. Multiple-choice ear training you can do anywhere — on the bus, in a waiting room, whenever you have a few minutes.
• Travel Chords — no keyboard needed. An audio chord reference library; tap any chord to hear it.
• Challenge — no keyboard needed. Pick up to three chords and ChordFrog builds a short video that plays them, counts down, then reveals the answer. Share it anywhere, or leave it on a cliffhanger and let your friends guess.
• My Pond — no keyboard needed. Every chord you have practised, weakest first, with one tap to drill the ones you keep missing.
• Lily Pad Drill — with a MIDI keyboard. 10-question scored rounds with up to 100 points. Three tries per chord, so every attempt counts.
• Free Pond — with a MIDI keyboard. Play freely and ChordFrog names every chord in real time, including inversions and slash chords.
A MIDI keyboard is optional: four of the six modes work entirely on their own, while Lily Pad Drill and Free Pond add hands-on practice when you connect one.
SIRI AND SHORTCUTS
Ask for a chord and hear it without opening the app — useful when you are already reading a chart. Shortcuts can also identify a chord from its notes, list the chords you find hardest, and start a drill on them.
LEVELS
Progress through five stages from beginner to advanced:
• The Campfire — the most common chords in pop and folk music
• The Session — all 12 major and minor chords
• The Gig — dominant 7th and major 7th chords
• The Studio — minor 7th, sus2, and sus4 chords
• The Abyss — everything: diminished, augmented, 7ths, 6ths, and more
CHORD VOCABULARY
Recognises major, minor, diminished, augmented, sus2, sus4, dominant 7th, major 7th, minor 7th, half-diminished, 6th and add9 chords, including inversions and slash chords. Free Pond also names extended and altered voicings — 9th, major 9th, minor 9th, 13th, minor 11th and altered dominants — and it reads a seventh chord voiced without its fifth, the way players actually voice one.
FREE, WITH ONE OPTIONAL PURCHASE
ChordFrog is free and nothing is gated. It is supported by a banner on the menu and one full-screen ad after a completed round; a single Remove Ads purchase takes both away if you would rather not see them.
Designed for pianists, guitarists, singers, producers, and songwriters who want sharper ears.
Ratings & Reviews
Where the law requires it, ChordFrog now asks for your consent before showing ads, and Settings gains a Privacy options row to review or change your answer. The Remove Ads row now says why a purchase is unavailable instead of showing a generic message. VoiceOver reads the app properly: screen changes, each drill outcome, the chord identified in Free Pond, and every toast. The ad library underneath was updated.
Remove Ads is unchanged: one payment, no banner, no full-screen ad after rounds.
The developer, Skadi Oy, 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
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Skadi Oy
- Size
- 43.4 MB
- Category
- Music
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $2.99
- Copyright
- © 2026 Skadi