LINGOT - Musical instrument tuner, LINGOT is a musical instrument tuner.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
Fine Tuner - Fine Tuner is a minimalistic guitar tuner that utilizes your device's built-in microphone.
Wondershare PDFelement - All-in-one PDF editor
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.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.