Viola Tuner Professional offers instant and accurate tuning for violists of all skill levels, from beginners to advanced musicians. The app provides the exact sound frequency in Hz and allows calibration for various Hz settings including 392Hz, 415Hz, 432Hz, and more. It boasts the fastest tuning capabilities optimized for the latest iPhone devices, ensuring high responsiveness and sensitivity.

The user-friendly interface features an LED tuning indicator, visual indicators that light up when the string is tuned, and advanced settings like A4 calibration and mic sensitivity. Viola Tuner Professional is a universal app compatible with iPhone, iPad, and iPod touch, offering additional features like sound notifications and a tuning fork available as in-app purchases.