Tune My Cello is an Android app created by Red Button Audio that is designed to help cello players tune their instrument by ear. The app is straightforward and easy to use. Upon opening the app, you are presented with four buttons representing each of the strings on the cello. Touching a string button will play the corresponding note, allowing you to hear if it is in tune or not.

In addition to the string buttons, there is also a "tuning fork" button that plays a pure tone an octave above middle C. This feature can be useful for tuning the A string, as it is often used as a reference pitch. Tune My Cello is a free app and is part of the Multimedia category under Music & Radio subcategory.