1. Elements 2.0

This app puts the periodic table right at your fingertips. You can also look up the melting point, appearance, atomic radius, and other characteristics of the elements. This is a handy guide or study tool.

2. Handy Calc

Turn your phone into a sophisticated calculator with this app. It has advanced and scientific calculations, and there is an intuitive feature built into the app to help predict what you are looking for and provide it for you.

3. Science Pal

This free application offers useful scientific terms and information, including the Periodic Table, constants, polyatomic ions, the solar system, and nuclides.

4. Deluxe Moon

This handy app includes a widget that shows you the phases of the moon, as well as animated zodiac circles. Other features include a browsable moon calendar, automatic GPS locations, and moonrise time. You can also explore moon astronomy and astrology. Only $4.77.

5. Taber’s Medical Dictionary

Here is a comprehensive app and reference tool that includes over 60,000 entries, 1,000 illustrations, and 30,000 audio pronunciations. The app allows you to bookmark content and link to related entries. This authoritative tool doesn’t come cheap: It costs $49.95 to download the app.

6. AgileSciTools

This advanced calculator is specifically targeted to those studying the biological sciences. There are functions to calculate molarity dilutions, cell dilutions, MOI calculations, and primer resuspension volumes. And if you can understand what any of those are, then this is probably the calculator for you.

7. Science Facts

Learn interesting and remarkable facts about science with this app. You can use the information to learn something new, to refresh your knowledge, or to impress your friends.

8. iSoundSmart: Science

Learn a fun new fact about science for each day of the year. With so much information, you can easily use this app far beyond the year, and rediscover the information the following year.

9. New Scientist

Read the publication New Scientist right on your phone. The app helps you stay up-to-date on all the latest stories from this respected news weekly.

10. Science Quiz

You and your friends can quiz each other’s science knowledge with this fun and handy app. See how you stack up against your friends, or use it to quiz yourself for a refresher.

11. The Science of Mind

This app offers “a complete course of lessons in the science of mind and spirit.” This application is free.

12. 1001 Science Trivia Lite

The free “Lite” version only has just over 300 trivia questions, not 1001, but there are still enough questions here to test out your knowledge and help you learn more about science. The full version is .75 pounds.

13. Metal Detector

Find metals of most types to use in your experiments by turning your phone into a metal detector. The app will detect most metals, but it can’t pick up on aluminum. Who knows, you may get lucky and strike gold on your search.

14. Ghost Radar

Hearing things that go bump in the night? This app can turn your phone into a ghost detector, so you know for sure whether those strange noises are celestial or just a couple of alley cats. The app picks up on nearby energies NOT EMF or gravity. Some may argue that this is more parapsychology than science, but even paranormal investigations fall under the larger umbrella of science. Even still, the app is for entertainment purposes only.

15. Space, Android, Science, Planet

This fun app helps decorate your phone with a space theme. Icons include aliens, space shuttles, satellites, stars, planets, and the sun. There are also fun menu icons and a space background.