Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
Metronomus - Powerful and beautiful online metronome
LINGOT - Musical instrument tuner, LINGOT is a musical instrument tuner.
TapNTune - TapNTune is a fully functional application that can help users tune their instruments with ease, and users can use it on their Mac system.
Guitar Tuna - GuitarTuna is the easiest, fastest and most accurate guitar tuner app out there!
Online Guitar Tuner - We can say it is the "suggested", "universal" or standard guitar tuning.