About this app
Quickly learn the chemical structures of the most important organic and biochemical compounds, taught in secondary education (high school), by taking the multiple choice quizzes. Systematic name, trivial name (common name), or both are given. Hydrocarbons, functional groups, biomolecules, sugars, nucleobases, vitamins, amino acids. Similar to my other (free) apps. Works offline. No ads.
Latest release
What’s New
iOS 26 compatibility
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 21, 2026 · 12:25 PM $3.99
Screenshots
