Ear training between lessons: the intervals your music theory class asks for, five minutes a day, tuned to your level.

Level 1 is free, with unlimited sessions, no account to create and no ads.

WHAT YOU PRACTISE
Want to play by ear? It starts with one skill: hearing the gap between two notes. Which one is higher? By how much? And played together, would you know them? That gap is the interval: the building block of dictation, sight-reading, singing in class, and anything that asks you to hear before you play. You do not need to read a score to start.

BUILT WITH A MUSIC TEACHER
Relative Pitch: Intervals accompanies the "Relative Pitch" module of the L.U.C.I.D. method, born from a music teacher's own work. It fits work with your teacher as well as practice at home.

THE RIGHT LEVEL, NO SETTINGS
Too easy and you get bored. Too hard and you give up. You pick a level, and the ZDP engine does the rest: it reads your answers as you go and sets each exercise to your level of the moment. A good run? Difficulty goes up. An interval that resists? It comes back down, until it sticks. No plan to build.

THE GUIDED L.U.C.I.D. PATH
Beyond free practice, a structured path takes you step by step from the first ascending second to compound intervals, with an automatic reading of your level and the next stage recommended for you.

TRACK PROGRESS, SESSION AFTER SESSION
Statistics, a practice calendar and achievements: regularity gets organised. Custom interval lists let you work on exactly what resists, and a reference section lets you hear each interval again from C4.

AT HOME AND IN CLASS
Up to 3 independent profiles on one device: each keeps its own progress, statistics and pace.

FREE TO START, ONE PURCHASE FOR EVERYTHING
Level 1 is free: no seven-day trial, no cap on sessions per day, no subscription, no ads. When it starts to feel easy, a single purchase opens levels 2 to Maestro, the recommended level computed for you, and the L.U.C.I.D. path.

NO DATA COLLECTED
No account, no data collected. The exercises work offline; only the purchase goes through Google Play. Optional reminders ask for notification permission. Your answers, your statistics and your profiles stay on the device.

USABLE BY EVERYONE
TalkBack support, a high-contrast mode, a dark interface, layouts that hold at the largest font sizes, and feedback that never relies on colour alone: every answer is marked by a symbol and by haptic feedback. Adapting for real means adapting for everyone.

Ear training, music theory, solfege and aural skills: available in 12 languages, on Android 8.0 or later. The first app in the NotePrecision suite.