Super Tuner - Super Tuner is a musical tuning application that allows users to tune their instruments with ease to the frequency they want.
Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
MyGuitarTuner.com - Online microphone tuner for guitar, ukulele, violin and other instruments. Tune by ear or using the microphone of your device. It's fast and accurate algorithm makes it one of the best online microphone tuners available.
Metronomus - Powerful and beautiful online metronome
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.