# Functional Groups vs Amino Acids Quiz

The clearest difference is in-app purchases: Amino Acids Quiz at none against Functional Groups's 1. Functional Groups's advantage is ratings volume (23 vs 1) and device support (3 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Functional Groups sells 1 one-off in-app purchase. Amino Acids Quiz asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Functional Groups against 5.0 for Amino Acids Quiz. That said, the two scores are not equally well evidenced: Functional Groups has 23 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Functional Groups | Amino Acids Quiz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (23 ratings)](https://appshunter.io/ios/app/functional-groups/id1670252638/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/amino-acids-quiz/id6759407961/reviews)** |
| Number of ratings | **23** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 17 MB | 4 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Clarity Applications](https://appshunter.io/developer/1646120472) | [ETHAN BARDSLEY](https://appshunter.io/developer/1866259152) |

## What reviewers say

### 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 |


### Amino Acids Quiz

[App page](https://appshunter.io/ios/app/amino-acids-quiz/id6759407961)

Master the 20 essential amino acids through interactive quizzes and customizable flashcards. Practice complex net charge calculations and receive detailed performance insights to identify areas for improvement. Enjoy a clean, fast, and private learning experience with modern design elements.

**Highlights:** Multiple-choice quizzes, Customizable flashcards, Net charge calculations, Performance insights, Dark Mode support, Haptic feedback

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Functional Groups free?

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

### Is Amino Acids Quiz free?

Amino Acids Quiz is free to download, with no in-app purchases.

### Which has better reviews, Functional Groups or Amino Acids Quiz?

Amino Acids Quiz is rated higher. Functional Groups averages 4.9 out of 5 from 23 ratings, while Amino Acids Quiz averages 5.0 from 1 ratings.

### Do Functional Groups or Amino Acids Quiz have ads?

Neither Functional Groups nor Amino Acids Quiz shows ads.

### Which is updated more often, Functional Groups or Amino Acids Quiz?

Functional Groups ships an update every 4 months, and Amino Acids Quiz every 4 months. Most recently, Functional Groups was updated on October 24, 2026 and Amino Acids Quiz on October 19, 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.*