Supported Features
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VoiceOver
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
Note Precision: Intervals
Ear training, music theory
Free · In‑App Purchases
New: see and hear premium levels and the L.U.C.I.D. journey before you unlock them.
The app is free. Level 1 in full, with unlimited sessions, and training that adapts to your ear from the very first answer.
You hear two notes. Which one is higher? By how much? And played together, could you name them?
Recognizing intervals by ear is what separates the musician who reads notes from the one who hears music. It is not a gift, it is practice. And you do not need to read sheet music to start.
TRAINING THAT ADAPTS TO YOU
The ZDP engine reads your answers as you go and sets every exercise to the level you are at today. On a good run? Difficulty rises. An interval that keeps slipping? It eases off until that one sinks in. You stay where progress actually happens: never bored, never stuck against a wall.
A DEBRIEF AFTER EVERY SESSION
Apple Intelligence can analyze your work right on your device and give you personal feedback: what is settling in, what still needs time. Nothing leaves your device.
FREE, FOREVER
• All of Level 1, with unlimited sessions
• The full adaptive engine within that scope
• Your progress, your calendar and your stats
• Reminders to help you keep the rhythm
WHAT THE SINGLE PURCHASE UNLOCKS
• Every level, from your first steps to the most demanding
• The complete range of intervals, simple and compound, ascending, descending and harmonic
• Your choice of which intervals to work on
• The pathway built for the L.U.C.I.D. method
One purchase, no subscription.
FOR HOME AND FOR THE CLASSROOM
Up to 3 independent profiles on a single device: everyone keeps their own progress, stats and pace.
BUILT TO BE USABLE BY EVERYONE
VoiceOver, high contrast, a dark interface, and feedback that never relies on color alone: every answer is marked by a symbol and by haptic feedback. Adapting properly means adapting to each person.
YOUR DATA STAYS WITH YOU
No collection, no account to create, no connection required, no permission to grant to get started. Everything happens on your device.
Note Precision: Intervals accompanies the Relative Ear module of the L.U.C.I.D. platform, which grew out of a music teacher's work, and it fits practice with your teacher as naturally as working on your own at home.
Available in 12 languages, as a native app on iPhone, iPad and Mac. This is the first app in the NotePrecision suite.
The ear can be trained.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New: Preview. Before you unlock a level or the L.U.C.I.D. journey, open Preview to watch and hear the exercise play on its own, animated. You also see the progression at a glance: more intervals and new play modes (ascending, descending, harmonic) at higher levels, plus the goals to reach along the journey. Watch, listen, then decide.
The developer, Cedrik Razafimanantsoa, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
The developer indicated that this app supports the following accessibility features. Learn More
For more information, visit the developer’s accessibility website .
Information
- Seller
- Cedrik Razafimanantsoa
- Size
- 11.4 MB
- Category
- Music
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 15.0 or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 11 more
- English, French, German, Italian, Japanese, Korean, Romanian, Russian, Simplified Chinese, Spanish, Traditional Chinese, Ukrainian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- All levels and exercises $8.99
- Copyright
- © 2026 Cedrik Razafimanantsoa