# Impari Period — Custom Periodic Table Quizzer

> Custom Periodic Table Quizzer (iPhone/iPad app by David Orgeman.)

- Source: https://appshunter.io/ios/app/impari-period/id1555959470 (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 · 3 MB
- Languages: American English
- Released: 2021-02-28
- Data updated: 2026-05-20
- User reviews in markdown: https://appshunter.io/ios/app/impari-period/id1555959470/reviews.md

## What is Impari Period?

Memorize the elements of the periodic table for chemistry with this highly customizable quizzing application.  Adjust it to suit your particular learning requirements.

Draw questions and answers from one or more of multiple choices, including:
   * element full chemical name
   * element symbol
   * atomic number
   * periodic table period
   * periodic table group
   * element family
   * valence electrons orbital
   * element state at room temperature and pressure

Select the question pool to include three different types of questions:
   * single answer selection
   * multiple choice selection (choose all)
   * type the answer questions

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.  Filters include the capability to combine matches with and/or selected logic - as well as the ability to block specific elements from question selection.

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 element names, symbols, numbers, and properties.  It is an ideal study aid for chemistry students who need to memorize various portions of this information.


## Version history (last 5 releases)

### 1.4.4 — 2026-03-05

Update minimum IOS version.  Bug fixes.

### 1.4.3 — 2026-02-10

Bug fixes.

### 1.4.2 — 2026-01-13

Updated Age Ratings.

### 1.4.1 — 2024-06-21

Bug fixes and updates.

### 1.4.0 — 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 Citric](https://appshunter.io/ios/app/impari-citric/id1552787092)
- [Impari PPP](https://appshunter.io/ios/app/impari-ppp/id1554866746)

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 2026-05-20.*