Elementary is a simple Periodic Table and element reference application for Android and Windows 10.
Word64 is a free word game where the goal is to spell words with the highest point values.
AndroidGet it on Google Play
For those of you who like to try new things, Flavordex is an app that provides a convenient way to keep track of the things you taste. This is a highly customizable tasting journal designed for both tablets and phones. Never forget the things you've tried and may want to try again (or never again).