No revenue estimate for the App Store: Apple publishes no install counts, and its star-rating counts don't calibrate to sales the way Steam's written reviews do. Reviews and prices only.
Learn to read music in five minutes a day. Free, with no ads and no subscription. Zebra turns music theory into 21 short games you'll actually open again tomorrow — from naming your first white key to reading two clefs at once. START WHERE YOU ARE A guided path of 41 lessons takes you through the keyboard, the staff, rhythm, intervals, scales and ear training. Every lesson ends with a game that asks for exactly what it just taught. Nothing stays abstract for long. FIVE MINUTES IS A REAL SESSION Each game is a short round with instant feedback: the note turns green when you're right, red when you're not. Play one round waiting for the bus and you've made progress. Play five and you've hit your daily goal. 600+ LEVELS, SO YOU WON'T OUTGROW IT Twenty games, each with its own ladder. You start on white keys and note names. Further up you're sight-reading a scrolling score, building scales in every key, and writing down rhythms by ear. WHAT YOU'LL TRAIN • Note recognition — on the staff, on the keyboard, by name • Sight-reading — notes scroll, you play them in time • Rhythm — tap the beat, hold the long notes, take rhythmic dictation • Intervals and chords — recognize them and build them • Scales and key signatures — major and minor, every key • Two clefs at once — treble and bass together • Real melodies — play tunes you know from the very first chapter WHAT KEEPS YOU COMING BACK • A daily challenge, the same one for everyone, every day • Quests and a streak that rewards showing up • Stars, unlocked games, and a skills chart that shows what's lagging • Statistics on every game, so progress is a number and not a feeling ALSO INSIDE • A free piano and a metronome, always in your pocket • Works fully offline, on the plane and in the practice room • English, French, Spanish, Italian and German NO ACCOUNT. NO ADS. NO PAYWALL. Everything is in the app from the first launch. Nothing is unlocked with money — only with practice. MADE FOR Piano, guitar, violin, brass and voice students. Music school pupils. Self-taught musicians. Teachers looking for drills. Anyone tired of counting lines on the staff. Open it, play one game, and find out where you actually stand.
Trends
Price over time on the United States storefront, quoted in USD — from our own daily price tracking. Other markets are listed under "Price by market" in the Prices tab; they are not on this axis, because one line cannot be two currencies.
Showing the last 90 days (the review-based charts: the last 4 monthly points). Full history and CSV export come with a free account.
Related
| Game | Revenue (estimated lifetime) | Reviews | Score | Price |
|---|---|---|---|---|
| F2P | 5.2K | 92% | Free | |
| F2P | 2.6K | 89% | Free | |
| F2P | 710 | 84% | Free | |
| F2P | 547 | 93% | Free | |
| F2P | 90 | 81% | Free | |
| F2P | 46 | 72% | Free |