Android Giveaway of the Day - Violin tuner

Basic tuner for musicians: the instrument is tuned by ear. The app plays the exact frequency of the G, D, A, E notes.
Also allows you to tune G, D, A of the viola ...
No frequency meter so no bug!
No ads, no internet connection, no intrusion into the device!
Initially, I created this basic tuner for myself because I couldn't find a tuner without ads or without intrusion into the device on the Playstore.
I realized that to tune my violin, my smartphone just had to play all four notes, that's all!
So now I have my tuner, it's simple and it works great! Let everyone benefit! The low price nevertheless gives an encouragement to develop Android applications ...