About this app
The BOSS Tuner app brings BOSS’s trusted and world-renowned chromatic tuning technology to iOS mobile devices. Available as a free download, the convenient app features the familiar look and intuitive display style of the best-selling TU-3 / TU-3W pedal tuner. Using the mic in your iOS device, you can tune a guitar, bass, and other instruments like violin, cello, brass, etc. Features - Provides hands-free chromatic tuning for a variety of instruments - Audible reference pitch function for tuning by ear - Supports horizontal screen to enlarge meter view - Tuning range: A#0 (29.14 Hz)--G8 (6,271.93 Hz) - Tuning accuracy: +/- 1 cent - Newsfeed for the latest BOSS info Find more BOSS tuner products at: http://www.boss.info/categories/tuners_metronomes/
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included. - It corresponds to the latest OS (iOS 11). - Improved sensitivity adjustment. - Added skin of TU-3W. You can also select existing skin (TU-3). - Added the function to switch the status of Auto-Lock on the main screen. - Added push notification function.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 27, 2026 · 3:51 PM Free
Screenshots
