This tuner is compatible with the new Android 5.1!
NEO Tuner is a very accurate chromatic tuner for any instrument. You can tune anything from a guitar to a violin. It even works well for voice training.
The color combination was chosen to be easily seen even in direct sunlight conditions. Unlike other apps, NEO Tuner also has an adjustable reference pitch so you can play with any musician that tunes his instrument using another base frequency. It can be extremely useful if you are playing in an orchestra for example.
If you were looking for an accurate all purpose instrument tuner this is the choice to go with.