If you are studying chemistry, it is a good idea to download this application, because you will have all the information about the elements on your screen, shown very well and fast.
You will not have to look for that paper where you used to look for the atomic number of Oxygen, Boron and other elements annoying you.
It shows more info than usual Periodic Tables, you will be able to know the boiling point, the melting point, color, discovery information, etc. so it will be very useful if you have to do your homework.
In addition, it also includes a glossary including the main terms and biographies of important people having to do with the Periodic Table.