The app that trains your musical ear, 5 minutes a day.
Note Precision: Intervals teaches you to recognize intervals with an engine that adapts to your ear, exercise after exercise. A way into music theory, through your ear first. On iPhone, iPad and Mac.
Free, one-time €9.99 unlock · No subscription · Up to 3 profiles on one device
The ZDP engine keeps you in your progression zone
A standard quiz repeats the same exercises. The ZDP engine models your actual level from several key signals, then picks every exercise from the range where you succeed 65 to 85% of the time. That’s statistically where learning works best, and that’s where it keeps you. Engine registered with the French IP office (INPI) in May 2026.
The L.U.C.I.D. Journey, designed with an educator
The app was born from a question by Marie, music teacher and founder of L.U.C.I.D. The journey structures your progress across five tiers, from the second to the octave, with spaced reviews that consolidate what you’ve learned. You always know where you stand, and a free mode remains available at any time.
You watch your ear improve
Statistics interval by interval, streaks, success rates. With Apple Intelligence on, the app reviews each session and gives you concrete advice for the next one, right on the device. It can also place your sessions in your calendar, at the moment they lock in your progress best.
100% native, on all your devices
A real app on every device, including a native Mac app with system menus and keyboard shortcuts. 12 languages, and up to 3 profiles on a single device, each with its own progression. VoiceOver, increased contrast, color-independent cues and dark interface, audited.
Made for people who want a method
Musicians who plateau despite practicing, self-taught players who want structure, families and teachers following several learners. It’s not a do-everything app: it focuses on interval recognition, and goes deep on it.
A serious app, verifiably so.
Engine registered with the INPI
The adaptive learning technology was registered in May 2026 and is demonstrated in production in the app.
Your data stays with you
Everything happens on device, including the Apple Intelligence analysis. Nothing leaves your iPhone.
Audited accessibility
VoiceOver, increased contrast, color-independent cues, dark interface. Checked screen by screen.
Free, no subscription.
Note Precision: Intervals is free, with a one-time €9.99 unlock. All of Level 1, with unlimited sessions and no time limit: your progression, your calendar and your statistics are free too. When that level gets easy, a single purchase opens every other one. On iPhone, iPad and Mac.
No subscription, no ads, just once.
The full method
The “Relative Pitch” pack
The app trains you. The L.U.C.I.D. method explains. The first pack by Marie, founder of L.U.C.I.D., brings both together: the theory on video and in print, the practice corrected inside the app, with exercises that never repeat the same way twice.
- Seven video lessons
- Two worksheets
- A book
- The Note Precision: Intervals app included, on iPhone, iPad and Mac
€99 until 30 September, €149 afterwards.
See the pack on lucid-method.comPaid once, no subscription, updates included.
Behind the app, a studio.
NotePrecision is an independent studio founded by Cedrik Razafimanantsoa, certified Product Designer and iOS developer with 16 years in AAA games. Its music learning tools are designed with educators, and Intervals is only the first.