For those who love playing guitar but don't know how to tune this is perfect for you. I do recommend Guitar Tuna.
It's free and downloadable from google play.
Also, it can tune other instruments such as the following:
Just strum your instruments and it can automatically catch and read it's pitch.
i have my guitar and it works well. tried it. :)
Nice post upvoted
https://steemit.com/life/@tofelix/adire-making-a-tool-for-developing-nations
I'm really going to try this out. Expect my feedback and review soon.