# Chemical Structures Quiz vs Functional Groups

The clearest difference is review sentiment: Functional Groups at 100% against Chemical Structures Quiz's 50%. Functional Groups also leads on price (Free vs $3.99). Chemical Structures Quiz's advantage is in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.0). On update cadence, ads and device support there is nothing between them.

Functional Groups is free to download; Chemical Structures Quiz costs $3.99 up front. Functional Groups sells 1 one-off in-app purchase. Chemical Structures Quiz asks for nothing beyond the download.

Chemical Structures Quiz ships an update every 2 months, Functional Groups every 4 months. The most recent releases landed on September 7, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Chemical Structures Quiz | Functional Groups |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | — | **[4.9 (21 ratings)](https://appshunter.io/ios/app/functional-groups/id1670252638/reviews)** |
| Number of ratings | — | **21** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 12 MB | 17 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marijn Dillen](https://appshunter.io/developer/1276712320) | [Clarity Applications](https://appshunter.io/developer/1646120472) |

## What reviewers say

### Chemical Structures Quiz

[App page](https://appshunter.io/ios/app/chemical-structures-quiz/id1397168183)

Test your knowledge of organic and biochemical compounds with multiple-choice quizzes. Learn systematic and common names for hydrocarbons, functional groups, and biomolecules. Ideal for high school students studying chemistry.

**Highlights:** Multiple-choice quizzes, Learn systematic and common names, Covers hydrocarbons, functional groups, biomolecules, Offline functionality, No advertisements

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Functional Groups

[App page](https://appshunter.io/ios/app/functional-groups/id1670252638)

Master organic chemistry functional groups through an engaging and interactive learning experience. Ideal for students in introductory or advanced courses, MCAT prep, and A-Level chemistry, this app covers dozens of essential groups with practice modes and progress tracking.

**Highlights:** 25+ basic and advanced functional groups, 300+ organic compounds, Multiple practice modes, Customizable study groups, Personalized review, Reference table and definitions, Progress tracking with achievements

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Access | $9.99 | one-time |


## Frequently asked questions

### Is Chemical Structures Quiz free?

Chemical Structures Quiz costs $3.99, with no in-app purchases.

### Is Functional Groups free?

Functional Groups is free to download, with in-app purchases available.

### Do Chemical Structures Quiz or Functional Groups have ads?

Neither Chemical Structures Quiz nor Functional Groups shows ads.

### Which is updated more often, Chemical Structures Quiz or Functional Groups?

Chemical Structures Quiz ships an update every 2 months, and Functional Groups every 4 months. Most recently, Chemical Structures Quiz was updated on September 7, 2026 and Functional Groups on September 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*