Snark and Amazon are really shooting themselves in the foot by not stating that these tuners can indeed be used to tune ukuleles. These are chromatic which means they have all the notes, including the C you need for standard soprano, concert, and tenor ukulele tuning. I have one right here, which arrived today, and I tuned a concert ukulele to it.
Snark makes a very good tuner, most of the time. Now and then you get a batch, like the blue ones about three years ago, that would break in two way too easily. I teach and perform on ukulele and other instruments, and I lost money on those blue Snarks. Now I'm hearing that the black ones are breaking. Well, right now, Amazon is offering them at such a good price that I'm going to stock up. Wish me luck. I always warn my students now to be very careful when adjusting the angle on their tuners, any tuners, and just don't let them get knocked around. The red Snark I bought about eight years ago has been great.