Hi, I'm a computer engineering student, and with a friend of mine (engineer) I created a chemistry app for Android.
It's called Molecolarium.
It is an offline collection of molecules, with images, nomenclatures [IUPAC, Stock, Traditional], weights and other information (danger sentences, precaution and GHS pictograms).
There is a search function and also a function to balance non-redox reactions (we are also working on redox reactions). The app is in Italian, English and German (BETA).
Molecolarium is FREE and we believe it can be useful for chemistry students in their first year of university and for those studying in higher technical institutes.There are two of us working on it and we do our best to improve the app and make it more and more reliable.
Here is the link if you are interested, thanks for the attention.
Molecolarium - Google Play Store -> https://play.google.com/store/apps/details?id=com.spel.molecolarium