Easy & funEar training for musicians
Tap to guess the note
Structured listening practice
Choose a course. Complete training. Practice with 25 focused questions. Build real listening skills in minutes a day.
Understand it. Then hear it.
Every level starts with a short, clear explanation. Then you train your ear on that exact concept, until you truly recognize it.
See your ear improving
Track your accuracy, speed, and consistency. Spot weak areas. Build streaks. Measure real progress over time.
Train freely
Customize your practice sessions. Choose pitch sets, octaves, difficulty, and length. Experiment. Refine. Repeat.
What our users are saying
We just launched, and we're already getting amazing feedback from our beta testers.
Beta Tester
"Even after just a few sessions, I can already hear the difference 👌 The other day I was casually playing guitar, not even my main instrument, and one I've never properly studied, and for the first time I started figuring out new chords completely by ear 😍"
Beta Tester
"I'm 40 and thought it was too late to develop a good relative pitch. Coco proved me wrong. The science-backed method and realistic expectations kept me motivated, and now I'm recognizing notes I never could before."
Beta Tester
"As a guitar teacher, I recommend Coco to all my students. The structured approach and quick sessions fit perfectly into their practice routines. I've seen real improvement in their ability to play by ear."
Creator of Coco
Hey, music lover
I'm Marco, a musician and developer. I built Coco because I was tired of ear training apps that feel like random quizzes with no real method behind them.
I read every study I could find on pitch perception, relative pitch, and how adults actually learn to hear music. Turns out, most apps ignore decades of research.
So I built Coco around 3 principles:
- Start with contrasting sounds, not similar ones — your brain learns differences first.
- Short daily sessions beat long sporadic ones — 5 minutes a day actually works.
- Structure matters — every level has a reason, not just a random set of notes.
Coco is the app I wished existed when I started training my own ear. Now I'm building it for every musician who feels the same way.