Cello Tuner - PRO offers Standard, 5th Suite, Zoltán Kodály, and Whole step down modes for tuning. It stands out as the simplest and most precise tuning app with auto noise filtering. The process is straightforward: select the frequency and tuning, then play your instrument to see pitch indications for each string.

The app features a Tuner with options to calibrate piano sound and adjust A4 frequency within a range of 428 to 452 frequencies. It provides a precision tuning scale of 10 cents for every sub-bit, with visual indicators for accurate pitch detection. Additionally, the intuitive Metronome offers various beat modes, including support for segment beat functions and pendulum display mode for precise timing control.