Chemistry Helper is an Android app developed by QK Studio that helps users discover chemical reactions and solve chemical equations with one or several unknown variables. This app is perfect for anyone who needs help with organic and inorganic chemistry. The app can discover chemical reactions even if the right or left part is unknown, and it can map the discovered reactions in a usual and ionic aspect.

One of the key features of this app is the periodic table, which is very convenient. You can press a chemical element in the table to look up some information. The app also features a table of solubility of substances, making textbooks obsolete. In addition, the app includes an electronegativity table that is extremely easy to understand. The app is completely free, takes up only a few MB of space on your Android device, and has a simple and easy-to-use interface. It also supports multiple languages.