DPI Checker helps users find out what their devices dpi is and recommends the correct Google Play Services Version to install. The app is helpful for many different people to find their devices dpi for a various number of reasons.

DPI Checker is made with material design in mind. The app is completely free (with the option to donate if you so wish) The app is lightweight and easy to use yet very informational.
From version DPI Checker 1.1:
• New App Icon
All versions
December 3, 2015