Navigate this product

BOSS Tuner App: Chromatic Tuner App

An authentic BOSS tuner for your smartphone or tablet


The BOSS Tuner app brings BOSS’s leading tuning technology to your favorite iOS and Android mobile devices. Available as a free download, the convenient app features the familiar look and intuitive display style of the best-selling TU-3 pedal tuner. Using the mic in your device, you can tune a guitar, bass, and other instruments like violin, cello, brass, etc. You can also use it to check pitch accuracy as you practice singing. In addition to chromatic tuning, the app can sound reference pitches for tuning by ear. And with the included newsfeed, you’ll always stay up to date with the latest info on BOSS artists and gear.

The BOSS Tuner app is available on the App Store and Google Play.

  • BOSS’s famous chromatic tuning technology in a free mobile app
  • Features the look and interface style of the top-selling TU-3 Chromatic Tuner
  • Provides hands-free chromatic tuning with a 21-segment meter, note display, and visual tuning indicators
  • Tune instruments and voices using the built-in mic in your mobile device
  • Audible reference pitch function for tuning by ear
  • Customizable background color
  • Newsfeed provides info on BOSS artists and gear
  • Compatible with iOS and Android devices

An authentic BOSS tuner for your smartphone or tablet


Supported Devices
Requires iOS 8.0 or later.
Compatible with iPhone, iPad and iPod touch.
Recommends Android 4.1 or later.
Download on the AppStore
Get It on Google Play


If you have questions about operating your Roland, BOSS or Cakewalk product, please check our Knowledge Base for answers to the most common questions.

You can also contact our Product Support department by phone or email.

In addition, we have a library of Support Documents that you can download and reference. If Support Documents are available for this product, they will be listed below.

Newsletter Sign-up

Sign-up for Roland’s The Educator
educational e-newsletter.

Award-Winning Support

Roland offers free, award-winning product support for all of its products. »

Contact Us




Mailing Address

Roland Corp. US
5100 S. Eastern Ave.
Los Angeles, CA 90040-2938