ChordFrog: Piano Ear Training
Chord Recognition Quiz Game
About
Develop your musical ear by identifying chords through audio quizzes. Practice anywhere without an instrument, or connect a MIDI keyboard for hands-on drills. Progress through five levels of chord recognition, from basic to advanced.
What's New in ChordFrog
1.4
November 6, 2026
1.4 is the teacher's update. • Share a drill: pick up to ten chords, name the drill if you like, and send a link. On the student's phone it opens a quiz with exactly those chords, so a teacher can set the week's ear-training homework in one tap. Find it in My Pond and on every level. • Patient mode: miss a chord and the frog plays it again, then the root, then the chord once more, for as long as it takes. On by default for the first two levels; the switch on the level picker sets it for all. • Daily review: My Pond now offers a short session on the chords you know least well, keeps a streak, and can remind you at a time you choose, naming the chords that are due. • The keyboard looks and feels like a piano: ivory and satin keys, a fallboard, keys that press down with the force you play, octave labels, and note names on a long press. • Gentle motion: a ripple on every correct answer, light haptics when a chord is recognised, cards that respond to touch. All of it respects Reduce Motion. • Free Pond: the on-screen keys now light as they sound.
MoreSubscriptions & In-App Purchases
$2.99
Remove Ads
One payment. No banner, no full-screen ad after rounds.
Developer apps
FAQ
What is ChordFrog?
ChordFrog is a mobile game designed to train your ear for recognizing piano chords by sound. It offers audio quizzes and optional hands-on practice with a MIDI keyboard.
Can I use ChordFrog without a MIDI keyboard?
Yes, the Leap Quiz and Travel Chords modes work entirely without a MIDI keyboard. These modes focus on audio recognition and chord reference.
What types of chords can ChordFrog recognize?
ChordFrog recognizes a wide variety of chords including major, minor, diminished, augmented, sus2, sus4, dominant 7th, major 7th, minor 7th, half-diminished, 6th, and add9 chords, along with their inversions and slash chords.
How does the progression system work in ChordFrog?
ChordFrog features five learning stages, starting from 'The Campfire' for common chords and progressing to 'The Abyss' which covers all advanced chord types, including inversions and slash chords.
Does ChordFrog have ads?
Yes, ChordFrog contains advertisements. As a free application, ads are displayed to support its development and availability.
What devices is ChordFrog available on?
ChordFrog is available on iPhone and iPad devices, as indicated by its supported devices list.
How often is ChordFrog updated?
ChordFrog was last updated on June 26, 2026, indicating a recent update. The app's version is 1.0.1.
What is the age rating for ChordFrog?
ChordFrog has an age rating of 4+, making it suitable for a wide range of users interested in learning about music.
