# Impari Citric — Custom Citric Cycle Quizzer

> Custom Citric Cycle Quizzer (iPhone/iPad app by David Orgeman.)

- Source: https://appshunter.io/ios/app/impari-citric/id1552787092 (this page in markdown: same URL + `.md`)
- Developer: [David Orgeman](https://appshunter.io/developer/1545166417)
- Category: Education
- Price: $1.99
- Age rating: 4+
- Requires: iOS 16.6 · 4 MB
- Languages: American English
- Released: 2021-02-09
- Data updated: 2026-07-28
- User reviews in markdown: https://appshunter.io/ios/app/impari-citric/id1552787092/reviews.md

## What is Impari Citric?

Memorize details on the citric acid cycle (AKA, Krebs or TCA) for biology and biochemistry with this highly customizable quizzing application.  Adjust it to suit your particular learning requirements.

Draw questions from one or more of many choices, including:
   * participating reaction molecules
        * full chemical name
        * abbreviation
        * chemical skeletal formula
        * chemical structural formula
   * reaction catalysts
        * full chemical name
        * abbreviation
   * citric acid cycle reactions
        * reactants
        * catalysts
        * products

Select answers from one or more of many choices, including all of the question options as well as:
   * enzyme class of the catalysts
   * type of the reactions
   * how reactions effect the energy availability
   * chemical co-reactants involved in the reactions
   * chemical by-products produced by the reactions

Configure the number of questions and how they are selected:
   * user set number of random questions (allowing repeats)
   * user set number of unique, non-repeating questions
   * ask ALL questions currently matching the selection filters

Configure how missed answers are handled with multiple options:
   * just continue with quiz
   * repeat missed questions one time
   * keep repeating missed questions until answered correctly

Utilize filters to further limit the questions included and target your individual learning goals.

Quiz includes both single choice questions and select-all-that-apply questions.

Save settings that meet your needs to be used automatically with future use of the application - or reset to the system defaults at will.

All of this allows you to configure the app to help you quickly learn the citric cycle reactions including the reactants, catalysts, products, co-reactants, and by-products.  It is an ideal study aid for biology and biochemistry students who need to memorize various portions of this information.

## Chart rankings

- #186 in Top Paid · Education (US App Store)


## Version history (last 5 releases)

### 1.6.4 — 2026-03-06

Update minimum IOS version.  Bug fixes.

### 1.6.3 — 2026-02-10

Bug fixes.

### 1.6.2 — 2026-01-13

Updated Age Ratings.

### 1.6.1 — 2024-06-21

Bug fixes and updates.

### 1.6.0 — 2021-03-28

Added a historical trends screen that provides statistics to help determine areas of study needing more attention.

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## More apps by David Orgeman

- [Impari Amino](https://appshunter.io/ios/app/impari-amino/id1545166175)
- [Impari Glyco](https://appshunter.io/ios/app/impari-glyco/id1549893928)
- [Impari PPP](https://appshunter.io/ios/app/impari-ppp/id1554866746)
- [Impari Period](https://appshunter.io/ios/app/impari-period/id1555959470)

All apps by David Orgeman: https://appshunter.io/developer/1545166417

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-28.*