What's New

- All game modes are available immediately and for free.
- Multiple-choice questions (with 4 or 6 answer options).

App Description

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.

iPhone Screenshots

(click to enlarge)

Carboxylic Acids and Esters screenshot 1 Carboxylic Acids and Esters screenshot 2 Carboxylic Acids and Esters screenshot 3 Carboxylic Acids and Esters screenshot 4 Carboxylic Acids and Esters screenshot 5

iPad Screenshots

(click to enlarge)

Carboxylic Acids and Esters screenshot 6 Carboxylic Acids and Esters screenshot 7 Carboxylic Acids and Esters screenshot 8 Carboxylic Acids and Esters screenshot 9 Carboxylic Acids and Esters screenshot 10

App Changes

  • March 25, 2014 Initial release
  • April 11, 2014 Price increase: FREE! -> $0.99
  • April 18, 2014 Price decrease: $0.99 -> FREE!
  • April 19, 2014 Price increase: FREE! -> $0.99
  • April 26, 2014 Price decrease: $0.99 -> FREE!
  • April 27, 2014 Price increase: FREE! -> $0.99
  • May 04, 2014 Price decrease: $0.99 -> FREE!
  • May 21, 2014 Price increase: FREE! -> $0.99
  • May 28, 2014 Price decrease: $0.99 -> FREE!
  • May 29, 2014 Price increase: FREE! -> $0.99
  • June 05, 2014 Price decrease: $0.99 -> FREE!
  • July 16, 2014 Price increase: FREE! -> $0.99
  • July 21, 2014 Price decrease: $0.99 -> FREE!
  • July 22, 2014 Price increase: FREE! -> $0.99
  • July 27, 2014 Price decrease: $0.99 -> FREE!
  • August 01, 2014 Price increase: FREE! -> $0.99
  • August 17, 2014 Price decrease: $0.99 -> FREE!
  • August 19, 2014 Price increase: FREE! -> $0.99
  • August 31, 2014 Price decrease: $0.99 -> FREE!
  • September 02, 2014 Price increase: FREE! -> $0.99
  • September 07, 2014 Price decrease: $0.99 -> FREE!
  • September 22, 2014 Price increase: FREE! -> $0.99
  • September 28, 2014 Price decrease: $0.99 -> FREE!
  • September 30, 2014 Price increase: FREE! -> $0.99
  • October 12, 2014 Price decrease: $0.99 -> FREE!
  • October 13, 2014 Price increase: FREE! -> $0.99
  • November 17, 2014 Price decrease: $0.99 -> FREE!
  • November 19, 2014 Price increase: FREE! -> $0.99
  • February 15, 2015 Price decrease: $0.99 -> FREE!
  • February 17, 2015 Price increase: FREE! -> $0.99
  • February 22, 2015 Price decrease: $0.99 -> FREE!
  • February 25, 2015 Price increase: FREE! -> $0.99
  • June 14, 2019 New version 2.0