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
Remove Ads is now available. One payment removes the banner and the full-screen ad after rounds — the app stays free, and nothing is gated either way.
If you looked for it in 1.2 and could not find it, sorry about that — this is the release that actually delivers it.
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
- 41.5 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.
- iPhone
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $2.99
- Copyright
- © 2026 Skadi