# Amino Acid Guide vs Chirality

The clearest difference is rating: Chirality at 4.6 against Amino Acid Guide's 3.6. Chirality also leads on in-app purchases (none vs 1) and review sentiment (80% vs 54%). Amino Acid Guide's advantage is update cadence (every 4 weeks vs every 41 months) and iOS requirement (10.0 vs 15.0). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Amino Acid Guide sells 1 one-off in-app purchase. Chirality asks for nothing beyond the download.

Chirality holds the better App Store score, 4.6 against 3.6. Both are backed by a comparable volume of ratings — 14 and 14 respectively. Written reviews point the same way: 54% of Amino Acid Guide's written reviews are positive against 80% of Chirality's.

Amino Acid Guide ships an update every 4 weeks, Chirality every 41 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Amino Acid Guide | Chirality |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (14 ratings)](https://appshunter.io/ios/app/amino-acid-guide/id957165646/reviews) | **[4.6 (14 ratings)](https://appshunter.io/ios/app/chirality-2/id1251289926/reviews)** |
| Number of ratings | 14 | 14 |
| Positive reviews | 53.8% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 41 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 83 MB | 224 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Axton Pitt](https://appshunter.io/developer/957165645) | [Michelle Spencer](https://appshunter.io/developer/1168523801) |

## What reviewers say

### Amino Acid Guide

[App page](https://appshunter.io/ios/app/amino-acid-guide/id957165646)

Explore the properties and structures of all 20 amino acids with detailed diagrams and 3D models. Test your knowledge with various quiz types, and access daily learning prompts on your Apple Watch.

**Highlights:** Browse amino acid properties, 3D animated and 2D structural models, Multiple quiz types, iPad multitasking support, Apple Watch daily learning feature, Detailed data points (Codons, Polarity, etc.)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quiz | $2.99 | one-time |


### Chirality

[App page](https://appshunter.io/ios/app/chirality-2/id1251289926)

This educational game makes learning organic chemistry engaging through interactive puzzles and quizzes. It covers fundamental concepts like functional groups, isomers, and molecule naming using intuitive touch controls. Track your progress, earn medals, and compete with friends.

**Highlights:** Interactive puzzles, Learn organic chemistry concepts, Drag and drop interface, Progress tracking, Medal system, Timed modes, Fun facts

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

**In-app purchases:** none


## Frequently asked questions

### Is Amino Acid Guide free?

Amino Acid Guide is free to download, with in-app purchases available.

### Is Chirality free?

Chirality is free to download, with no in-app purchases.

### Which has better reviews, Amino Acid Guide or Chirality?

Chirality is rated higher. Amino Acid Guide averages 3.6 out of 5 from 14 ratings, while Chirality averages 4.6 from 14 ratings.

### Do Amino Acid Guide or Chirality have ads?

Neither Amino Acid Guide nor Chirality shows ads.

### Which is updated more often, Amino Acid Guide or Chirality?

Amino Acid Guide ships an update every 4 weeks, and Chirality every 41 months. Most recently, Amino Acid Guide was updated on November 1, 2026 and Chirality on November 2, 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.*