mellowD - Intonation Trainer
Kai Lehmann Music iPhoneiPadiPod touch
mellowD - Intonation Trainer is a free Music app for iPhone and iPad by Kai Lehmann. Requires iOS 15.6. Updated October 18, 2026.
- Price
- Free
- on the App Store
- Size
- 52 MB
- Age 4+
- Updated
- Oct 18
- 2026 · v1.7.0
Screenshots
About mellowD - Intonation Trainer
TRAIN YOUR INTONATION WITH PRECISION mellowD helps beginners and advanced players of string instruments systematically improve their intonation. Play scales or random notes on your instrument — the app analyzes your pitch in real time and gives you clear feedback on accuracy and progress. No more guessing. No more uncertain notes. You instantly see how cleanly you play. CORE FEATURE: INTONATION TRAINING • Play selected scales on your instrument • Live analysis of your pitch • Precise feedback on your intonation • Evaluation after each exercise • Track your progress over time Perfect for a focused 5-minute daily practice. WHO IS MELLOWD FOR? • Beginners • Music students • Returning players • Teachers supporting their lessons Ideal for structured practice at home or during lessons. ADDITIONAL FEATURES • INTERACTIVE FINGERBOARD Learn the positions of all notes on the fingerboard and play simple melodies virtually on your smartphone. • PRECISE TUNER Tune your string instrument with adjustable reference frequency and tolerance range. • METRONOME Practice scales with rhythmic precision — from slow to fast. WHY MELLOWD IS DIFFERENT Many apps only offer a tuner or a metronome. mellowD goes further: you actively train your intonation — with measurable progress. MULTILINGUAL German, English, Italian, Spanish, and French. mellowD was developed by me, an active musician — from musician, for musicians. Make your intonation measurable. Train with purpose. Play more in tune.
What’s new
Version 1.7.0 · Updated October 18, 2026
What's new in this version: • **New Music Library in Trainer Mode:** Play back real musical pieces and practice your intonation, now including polyphonic orchestral music. Multiple instrumental parts can be imported and played together. Select your own instrument part for focused intonation practice. One piece is available at launch. Additional music import and library management features are planned as part of a future subscription model. • **Bookmarks:** Quickly navigate to important passages in a piece. Existing bookmarks are preserved, and you can add or remove your own. • **Flexible Playback Start:** Choose any starting point for playback or your intonation practice. • **Note Playback:** Listen to the notes in Trainer Mode. • **Adjustable Playback Speed:** Set the playback tempo in BPM to match your practice pace. • **Extended Metronome Time Signatures:** More time signatures for flexible practice. • **Layout Improvements:** Enhanced layout and usability. • **Full Tablet Support:** Optimized experience on tablets.
App privacy
The developer, Kai Lehmann, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction, Other Usage Data
- Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
Used for: Analytics
Alternatives to mellowD - Intonation Trainer
Looking for apps like mellowD - Intonation Trainer? Here are 6 similar apps on the App Store. The highest rated is BlueKeyDetect (5.0/5), and 5 of the 6 are free to download.
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