# Codon One vs Amino Acids Trainer

The clearest difference is rating: Amino Acids Trainer at 5.0 against Codon One's 4.5. Codon One's advantage is ratings volume (25 vs 1) and iOS requirement (15.6 vs 17.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Codon One sells 7 one-off in-app purchases and Amino Acids Trainer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Amino Acids Trainer holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Codon One has 25 ratings behind it against 1, so its average is the more settled of the two.

Codon One ships an update every 3 weeks, Amino Acids Trainer monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Codon One | Amino Acids Trainer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (25 ratings)](https://appshunter.io/ios/app/codon-one-biology-study/id1517313390/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/amino-acids-trainer/id6791918556/reviews)** |
| Number of ratings | **25** | 1 |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 277 MB | 11 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Gebert](https://appshunter.io/developer/1517313389) | [Alexander Mehanic](https://appshunter.io/developer/1888807545) |

## What reviewers say

### Codon One

[App page](https://appshunter.io/ios/app/codon-one-biology-study/id1517313390)

Master molecular biology, genetics, evolution, and life chemistry through interactive modules and quizzes. Explore essential concepts with clear diagrams and concise explanations. Includes helpful tools for sequence analysis and genetic code reference.

**Highlights:** Interactive learning modules, Quick quizzes for comprehension, Clear diagrams and plain language, Molecule reference guide, Sequence analysis tools, Genetic code exploration

**Features:** Family Sharing, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Module 2: Genetics | Free | one-time |
| Module 1: Chemistry of Life | Free | one-time |
| Module 3: Evolution | $2.99 | one-time |
| Module 4: Science History | $2.99 | one-time |
| Module 5: Cell Biology | $2.99 | one-time |
| Module 6: Development | $2.99 | one-time |
| Unlock All | $8.99 | one-time |


### Amino Acids Trainer

[App page](https://appshunter.io/ios/app/amino-acids-trainer/id6791918556)

Master the 20 proteinogenic amino acids with interactive quizzes covering structures, codes, properties, and formulas. Practice with various modes, difficulty levels, and timed exams. Track your progress and review mistakes to build confidence.

**Highlights:** Interactive amino acid training, Structure, code, and property quizzes, Multiple quiz modes, Adjustable difficulty levels, Timed exam mode, Detailed statistics and progress tracking, Review and bookmarking features

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | one-time |


## Frequently asked questions

### Is Codon One free?

Codon One is free to download, with in-app purchases available.

### Is Amino Acids Trainer free?

Amino Acids Trainer is free to download, with in-app purchases available.

### Which has better reviews, Codon One or Amino Acids Trainer?

Amino Acids Trainer is rated higher. Codon One averages 4.5 out of 5 from 25 ratings, while Amino Acids Trainer averages 5.0 from 1 ratings.

### Do Codon One or Amino Acids Trainer have ads?

Neither Codon One nor Amino Acids Trainer shows ads.

### Which is updated more often, Codon One or Amino Acids Trainer?

Codon One ships an update every 3 weeks, and Amino Acids Trainer monthly. Most recently, Codon One was updated on November 3, 2026 and Amino Acids Trainer on October 31, 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.*