Periodic Droid is a free Android app for studying and learning the elements on the Periodic Table. It allows students to click through each element to discover information like the boiling point, crystal structure, and ionization potential of that element. Students can also click through to Wikipedia entries about each element.

Periodic Droid offers a practice quiz mode for students. Students can select from six different quiz modes. Each quiz can be based on recognizing elements’ names, atomic numbers, symbols, atomic weight, crystal structure, and boiling point.