https://github.com/adrielcafe/chroma

🎶 Chromatic tuner app for Android
https://github.com/adrielcafe/chroma

android android-app android-application buy-me-a-coffee chromatic-tuner compose coroutines in-app-purchase jetpack-compose kotlin kotlin-android kotlin-coroutines music music-notation music-theory mvvm-android mvvm-pattern tarsosdsp tuner

Last synced: about 2 months ago
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🎶 Chromatic tuner app for Android

• Host: GitHub
• URL: https://github.com/adrielcafe/chroma
• Owner: adrielcafe
• License: mit
• Created: 2019-01-25T23:36:33.000Z (over 6 years ago)
• Default Branch: master
• Last Pushed: 2023-09-29T17:06:46.000Z (about 2 years ago)
• Last Synced: 2025-04-23T16:34:26.574Z (6 months ago)
• Topics: android, android-app, android-application, buy-me-a-coffee, chromatic-tuner, compose, coroutines, in-app-purchase, jetpack-compose, kotlin, kotlin-android, kotlin-coroutines, music, music-notation, music-theory, mvvm-android, mvvm-pattern, tarsosdsp, tuner
• Language: Kotlin
• Homepage: https://play.google.com/store/apps/details?id=cafe.adriel.chroma
• Size: 2.49 MB
• Stars: 121
• Watchers: 5
• Forks: 16
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE.md

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README

          
# Chroma

![app banner](banner.png)

Chroma is a [chromatic tuner](https://en.wikipedia.org/wiki/Chromatic_scale), the perfect app to help you tune your musical instruments with precision and elegance.

Features:

* Basic and complete UI modes

* Noise suppressor

* Letter (A B C) and Solfege (Do Re Mi) notations

* Sharp (♯) and Flat (♭) semitones

* Tuning precision (from 0 to -5/+5 cents)

* Many available pitch detection algorithms (powered by [TarsosDSP](https://github.com/JorenSix/TarsosDSP/)):

    * [YIN](http://audition.ens.fr/adc/pdf/2002_JASA_YIN.pdf)

    * [FFT YIN (Fast Fourier Transform)](https://en.wikipedia.org/wiki/Fast_Fourier_transform)

    * [MPM (McLeod Pitch Method)](http://miracle.otago.ac.nz/tartini/papers/A_Smarter_Way_to_Find_Pitch.pdf)

    * [AMDF (Average Magnitude Difference Function)](https://ieeexplore.ieee.org/abstract/document/1162598)

    * [DYWA (Dynamic Wavelet)](https://pdfs.semanticscholar.org/1ecf/ae4b3618f92b4267912afbc59e3a3ea1d846.pdf)

[![download app button](https://play.google.com/intl/en_us/badges/images/badge_new.png)](https://play.google.com/store/apps/details?id=cafe.adriel.chroma)

## Screenshots

![app screenshots](screenshots.png)