If you are looking for an inexpensive tuner that works well – this is an excellent choice. I first saw one of these little guys used on a friend’s mandolin. Since then I have been bringing them in and selling them to my students, and they love them.
What makes this tuner different? The display uses a few different colors. If you are flat the display shows red, when you are right on, it is a narrow blue strip and if you are sharp it is yellow. This makes it really easy to see when you are tuned perfectly. Another really nice feature is that the display rotates 360 degrees. Now you don’t have to clip it just right to see the display. It has an extended range and tunes my banjo, guitar, bass or mandolin. It is chromatic, so if you use alternate tunings, it works well too. The clip holds really well and the tuner is light, no added weight on the headstock. It works using a vibration sensor or a microphone and even has a metronome built in. But, best of all it is inexpensive.