This is a cheap tuner, yet the build quality is pretty good and it is easy to use. It works just fine for any stringed instrument, but is labeled as a ukulele tuner and does have 2 specific ukulele settings (C and D tuning).
I find that you need to pluck the strings a little harder than with more expensive tuners for this tuner to pick up the strings correctly, But it is not really a big problem.