# Gene Tutor vs Codon One

The clearest difference is rating: Gene Tutor at 5.0 against Codon One's 4.5. Gene Tutor also leads on in-app purchases (none vs 7) and iOS requirement (9.3 vs 15.6). Codon One's advantage is update cadence (every 3 weeks vs every 6 months) and ratings volume (24 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Codon One sells 7 one-off in-app purchases. Gene Tutor asks for nothing beyond the download.

Gene Tutor holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Codon One has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 67% of Gene Tutor's written reviews are positive against 76% of Codon One's, so the app with the better star average is not the one people write more warmly about.

Gene Tutor ships an update every 6 months, Codon One every 3 weeks. Both last shipped on October 10, 2026.

## The numbers

| Metric | Gene Tutor | Codon One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gene-tutor/id534062019/reviews)** | [4.5 (24 ratings)](https://appshunter.io/ios/app/codon-one-biology-study/id1517313390/reviews) |
| Number of ratings | 1 | **24** |
| Positive reviews | 66.7% of reviews | **76.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 557 MB | 277 MB |
| Requires iOS | **9.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Brian Morton](https://appshunter.io/developer/1563273684) | [Daniel Gebert](https://appshunter.io/developer/1517313389) |

## What reviewers say

### Gene Tutor

[App page](https://appshunter.io/ios/app/gene-tutor/id534062019)

This educational app serves as a study aid for college-level genetics courses. It offers sample questions, extensive study materials with videos, a glossary, and features like flagging and shuffling questions to enhance learning.

**Highlights:** Sample questions (multiple choice), Extensive study material with figures and videos, Glossary of terms, Flagging for easy question retrieval, Shuffle option for random questions, Three question difficulty levels

**In-app purchases:** none


### 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 1: Chemistry of Life | Free | one-time |
| Module 2: Genetics | $2.99 | 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 |


## Frequently asked questions

### Is Gene Tutor free?

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

### Is Codon One free?

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

### Which has better reviews, Gene Tutor or Codon One?

Gene Tutor is rated higher. Gene Tutor averages 5.0 out of 5 from 1 ratings, while Codon One averages 4.5 from 24 ratings.

### Do Gene Tutor or Codon One have ads?

Neither Gene Tutor nor Codon One shows ads.

### Which is updated more often, Gene Tutor or Codon One?

Gene Tutor ships an update every 6 months, and Codon One every 3 weeks. Most recently, Gene Tutor was updated on October 10, 2026 and Codon One on October 10, 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.*