Pitch Grid Test - Measure your pitch-distance precision recognition. The resulting relative pitch indicator shows your sense for relative pitch.

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.

TuneCrack - TuneCrack stands for: Crack the tuning problem. The importance of tuning is often underestimated.

Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.

Guitar Tuna - GuitarTuna is the easiest, fastest and most accurate guitar tuner app out there!

LINGOT - Musical instrument tuner, LINGOT is a musical instrument tuner.