Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
Metronomus - Powerful and beautiful online metronome
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.
Metronome M1 - Simple but extremely accurate metronome for mobile.
AP Tuner - APTuner is a sophisticated chromatic tuner for your computer, tablet, and phone.
Guitar Tuna - GuitarTuna is the easiest, fastest and most accurate guitar tuner app out there!