# Intonation Training > Play the exercise — the app listens and scores your intonation note by note. Canonical page: [https://chrome-stats.com/d/com.contactplus.intonationtraining](https://chrome-stats.com/d/com.contactplus.intonationtraining) ## Overview - **ID:** `com.contactplus.intonationtraining` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Edmund Trujillo - **Category:** EDUCATION - **Downloads:** 16 - **Version:** 1.1.0 - **Last updated:** 2026-09-05 - **First published:** 2026-08-18 - **Publisher country:** US - **Size:** 31 MB - **Data as of:** 2026-09-18 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.contactplus.intonationtraining) - **Website:** [https://trumpettrainer.com/support](https://trumpettrainer.com/support) - **Privacy policy:** [https://trumpettrainer.com/privacy](https://trumpettrainer.com/privacy) ## Description Intonation Training listens through your microphone and scores your intonation against written music, in time. A tuner shows you that one held note is 12¢ sharp — it can't tell you that you go sharp on the leap into the high register, or flat when you tire at the end of a phrase, or that C#5 has been your problem note for a month. This does.

Play the exercise; the app hears every note and shows you which ones you miss.

How it works for real practice:
• Scored against written music, in time — eight measures on the staff, judged note by note as they pass. You train intonation the way it actually fails: in motion, at tempo, under a pulse — not one held note at a time.
• Trouble notes — the exact pitches you miss most, with hit rate and attempt count. "My intonation is shaky" becomes "your C#5 is 61% over 34 attempts." Now practice has a target.
• Play and Hear — Play opens the mic and scores you; Hear loops the melody through the speaker with no mic and no judgement, so you can learn how it should sound before you're graded.
• Wait for me — stop for a breath and the music freezes until you play again. Silence never turns into a wall of red.
• Four strictness levels — Learner ±25¢, Amateur ±15¢, Pro ±10¢, Studio ±5¢. The app grows with you, from "find the pitch at all" to studio-tight.
• Brass and woodwind — eleven transpositions plus a bass-clef mode. The staff shows what you read; scoring judges the concert pitch that actually sounds. Trumpet, cornet, horn, the sax family, Bb and A clarinet, bass clarinet, flute, piccolo, oboe and English horn — plus a bass-clef mode for trombone, euphonium, tuba and bassoon.

Track real progress:
• Per-exercise stats — attempts, best and average accuracy, current and best streak, fastest clean tempo, and an accuracy-over-time chart. Weeks of practice become a line going up.
• Badges to earn, a sample-locked metronome with an optional count-in, and auto-bump tempo that steps up on its own when you play a loop clean.
• Practice reminders that ask you back.

Read music your way:
• Note names in letters (C D E), German (H/B), or solfège (Do Re Mi) — independent of the app's language.
• Available in English, Spanish, French, German, Portuguese, Italian, Japanese and Korean.

600+ built-in exercises — major and minor scales, chromatics, pentatonics, blues, whole-tone, diminished, intervals and speed studies — plus import of song and library share codes from Trumpet Trainer, French Horn Trainer and Trombone Trainer.

Free to start:
• Practice and score a full built-in library for free, and listen to any exercise in Hear mode at no cost.

• A single one-time unlock opens everything — scoring on all 600+ exercises, plus editing, importing share codes, and sharing your own. One purchase, no subscription.

A tuner judges one note in isolation. Intonation Training scores a written line, at tempo, and remembers the result per exercise — so progress means something across weeks, not seconds. ## Rankings - #2,699,062 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.RECORD_AUDIO` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `com.android.vending.BILLING` - `com.contactplus.intonationtraining.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` ## Similar extensions and apps - [Intonalogy](https://chrome-stats.com/d/com.intonalogy.intonalogyapp) — 120 users - [EarTune - Pitch Ear Training](https://chrome-stats.com/d/com.eartune.mobile) — 655 users - [mellowD – Intonation Trainer](https://chrome-stats.com/d/com.mellowD) — 38 users - [INTUNATOR](https://chrome-stats.com/d/com.remolution.intunator) — 2,781 users - [Microtonal Ear Trainer](https://chrome-stats.com/d/com.wheelsandbones.microtonal) — 92 users - [PitchZen Intonation training](https://chrome-stats.com/d/com.loulblemo.earmaestro) — 113 users - [VocalTuner - Pitch Training](https://chrome-stats.com/d/com.harmolo.vocaltuner) — 802 users - [Violin Tuner & Intonation](https://chrome-stats.com/d/com.wangyuehuishi.violinintonation) — 301 users - [Intonalogy Lite](https://chrome-stats.com/d/com.intonalogy.intonalogyfree) — 680 users - [Cello Tuner & Intonation](https://chrome-stats.com/d/com.wangyuehuishi.cellointonation) — 55 users - [TonAi: AI Tuner & Intonation](https://chrome-stats.com/d/com.scorehabit.app) — 253 users - [Viola Tuner & Intonation](https://chrome-stats.com/d/com.wangyuehuishi.violaintonation) — 98 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.contactplus.intonationtraining)