After geography apps, I briefly return back to chemistry with Steroids. They were the subject of my undergraduate studies and I suspect that it will be the most difficult topics among all my apps.
The English description of the game is the following:
Steroids are an important class of natural products with various biological functions: hormones (estradiol, testosterone), vitamins (vitamin D3), lipids (cholesterol). This app is designed for chemistry, biochemistry, and pharmacy students. It provides you with a convenient tool to get acquainted with chemical formulas of the most important natural and synthetic steroids. Many of them are top-selling drugs used for a treatment of asthma, baldness, prostate cancer, and as oral contraceptives.
* 40 steroid structures
* a multiple-choice quiz
* a spell-the-name quiz