Quick daily games that make keys, chords and progressions finally click. Earn XP, keep your streak and level up, right on your phone.
▶ Start playing — free, no sign-up
We'll be in touch when your early access is ready. In the meantime, follow @harmonyhound for daily chord challenges.
No piano needed: it all plays on your phone. Got a digital piano? Plug it in with Piano Connect.
Most theory comes as a textbook or a list of shapes to memorise. Harmony Hound turns it into short games, so you learn by doing and want to come back tomorrow.
The hound picks a daily challenge at your level: name chords, build them, race the clock or catch falling chords.
Tap the keys on your phone. Any inversion counts. Got a digital piano? Piano Connect lets you play on real keys.
Earn XP, keep your streak and unlock new keys and harder levels. Every answer explains the why, so the theory sticks.
Name That Chord, Numbers Rush and Chord Drop turn theory into quick reflexes instead of facts to memorise.
A five-minute daily session. New keys and harder levels unlock as you improve.
Got a digital piano? Plug it in and play every game on real keys, with a live mirror that names whatever you play. Try it free.
Every scale degree has its own colour in every key, so patterns jump out before you know the names.
See how each key is built and why its seven chords belong together. Major and minor.
The chord progressions behind real songs, and why they work.
"I'm an adult piano learner. I could play chords, but I didn't understand why they went together, and every resource I found just wanted me to memorise more shapes. So I built what I wished existed: short games that make the theory stick."Andy, creator of Harmony Hound
Yes, during early access. Later there'll be a free version and an optional paid upgrade with extra content. Early access members will hear about it first.
No. Everything plays on your phone's screen. If you have a digital piano, Piano Connect lets you play the games on real keys, with a live mirror that names whatever you play. You can try it free.
If you can play a basic chord, you're ready. Harmony Hound starts with what you can already play and builds from there.
Both. It runs in your browser and can be installed to your home screen like an app. It works offline once installed.
There's no account to create. Your progress stays on your own device. We only ask for your email if you'd like early access and updates.
No. It's built for adults: playful, never childish. If you're a parent learning with your child, or a piano teacher, we'd love to hear from you. Pick that option when you sign up, so we can understand what you'd need.
Join early access, play free and help shape the games we build next.
We'll be in touch when your early access is ready.