Elementary is a free and simple periodic table and element reference application developed by UltraMega Software for Android devices. It has a user-friendly interface and features a zoomable periodic table of elements that allows you to tap on an element to view basic details.

The app also provides easy access to Wikipedia and a YouTube video on the element you are interested in. Another great feature of Elementary is that it is completely free, with no ads to distract you while you learn about the elements. The videos are provided by Periodic Videos, a popular science video series that explores the elements and their properties in an engaging way.

If you are a student, teacher, or just someone who is interested in chemistry and wants to learn more about the elements, Elementary is an excellent app to have. It is simple, easy to use, and provides all the information you need in one place. Download it today and start exploring the elements in a fun and interactive way!