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
1.0.5
August 1, 2026
Two stability fixes. Connecting a MIDI keyboard and playing your first notes could make ChordFrog quit unexpectedly — that's fixed. So is a crash when a phone call or alarm interrupted your practice. The pond stays calm no matter what.
MoreFAQ
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.