# C.chem — Organic Chemistry Testing

> Organic Chemistry Testing (iPhone/iPad app by Hans Kovi.)

- Source: https://appshunter.io/ios/app/cchem/id6804392281 (this page in markdown: same URL + `.md`)
- Developer: [Hans Kovi](https://appshunter.io/developer/1493527465)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 121 MB
- Languages: American English
- Released: 2026-08-29
- Data updated: 2026-09-11
- User reviews in markdown: https://appshunter.io/ios/app/cchem/id6804392281/reviews.md

## What is C.chem?

Randomly generated structural formulas across 6 levels (early high school up to university), each with 3 difficulty levels. Excellent practice material for any pupil or student studying chemistry. The breakdown and content of the levels:
Lvl 1: alkanes and simple alkenes
Lvl 2: Lvl 1 + more alkenes, simple branching, alcohols
Lvl 3: Lvl 2 + acids, amines, halogens
Lvl 4: Lvl 3 + alkynes, benzene and cyclic compounds (middle high school)
Lvl 5: Lvl 4 + cis/trans isomerism, recognizing asymmetric carbon atoms, thiols, aldehydes, ketones, nitro compounds, etc. (late high school)
Lvl 6: Lvl 5 + E/Z and R/S nomenclature, simple heterocyclic compounds (college, university)


## Version history (last 2 releases)

### 1.01 — 2026-09-01

Minor adjustments to interface and functionality

### 1.0 — 2026-08-29

No release notes.

## More apps by Hans Kovi

- [atom.sim](https://appshunter.io/ios/app/atomsim/id1493527466)
- [Chemistry formulas & names](https://appshunter.io/ios/app/chemistry-formulas-and-names/id1535630246)
- [Scheikunde formules & namen](https://appshunter.io/ios/app/scheikunde-formules-and-namen/id1555949746)
- [WordCrumble](https://appshunter.io/ios/app/wordcrumble/id6467563559)

All apps by Hans Kovi: https://appshunter.io/developer/1493527465

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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 2026-09-11.*