About this app
Carboxylic acids and esters are one of the most important classes of organic compounds. They are everywhere: * in food (citric acid; vinegar = a solution of acetic acid); * in medicines (aspirin = acetylsalicylic acid); * in fats (triglycerides are esters of fatty acids and glycerol); * in plastics (polyesters); * in biochemistry (transformation of pyruvate through the citric acid cycle); * and even in ants :) (formic acid) Learn structures and trivial names of 50 most important carboxylic acids and their esters and salts. Organic Chemistry Quiz: * Aliphatic saturated acids. * Unsaturated and substituted acids. * Di- and tricarboxylic acids. * Aromatic acids. * pKa values of all acids! Choose the game mode: * Spelling quizzes (easy and hard). * Multiple-choice questions (with 4 or 6 answer options). * Time game (give as many answers as you can in 1 minute). A learning tool: * Flashcards. The app is translated into 8 languages, including English, German, French, and many others. So you can learn the names of the carboxylic acids in any of them.
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included. - All game modes are available immediately and for free. - Multiple-choice questions (with 4 or 6 answer options).
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 10, 2026 · 10:25 AM $0.99
Screenshots
