Not great, not horrible. – Viola Tuner Review

It's not the greatest app, but it functions all right. It only does a short sound though, It would be nice if it kept the sound playing tell you clicked the button again. Also the C and G strings sound a little distorted (but it's not that bad). Other than that it works alright, just fix those things and it will be a lot better. Pretty good app otherwise.
Review by Someone human on Viola Tuner.