Noteworthy Tuner is an open-source tuner designed for musicians who want to quickly and accurately tune their instruments. The app is compatible with various instruments such as guitar, ukulele, violin, viola, cello, bass, and any other instrument. The core features of the app are free, and it is entirely ad-free.

The app is incredibly easy to use. Just open the app and play a tone, and the app will detect the note automatically in real-time, eliminating the need to pick the note first. The app is chromatic, meaning it can tune all 12 pitches in the octave, making it a versatile tool for musicians. Additionally, the A4 frequency can be changed from 440 Hz to anything else, making it suitable for a wide range of musical styles. Noteworthy Tuner is a must-have app for any musician looking for an accurate and reliable tuner.