The most important app for organic chemistry students includes 80 functional groups, the classes of organic compounds (hydrocarbons, ethers, esters, etc.) and natural products (amino acids, carbohydrates, lipids, etc.).
This is a great app to practice memorizing the functional groups in organic chemistry. I practice it over and over, and I can do it while waiting anywhere.
Tips for using the product
Start from the basic groups and proceed to the advanced topics.