This app is for everyone studying English language! Check your knowledge of the 100 most frequently used English nouns. The app has 3 modes:
* guess the word from its definition (a spelling quiz);
* translate the word from Spanish into English;
A learning tool:
* Flashcards: word - definition - Spanish translation.
- Many new features (stars) and improvements in game mechanics.
InstaSun — time-lapse sunsets! 
IKnowMyWay 
Functional Groups in Chemistry 