# iBiology™ vs Codon One

iBiology™ and Codon One both sit at 4.5 stars, but that hides the real split: 76% of Codon One's written reviews are positive against 0% of iBiology™'s. Codon One also leads on ratings volume (24 vs 2). iBiology™'s advantage is in-app purchases (none vs 7) and iOS requirement (9.0 vs 15.6). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.5 for iBiology™ against 4.5 for Codon One. That said, the two scores are not equally well evidenced: Codon One has 24 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 0% of iBiology™'s written reviews are positive against 76% of Codon One's.

iBiology™ ships an update every 2 weeks, Codon One every 3 weeks. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | iBiology™ | Codon One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/ibiology/id1330652402/reviews)** | [4.5 (24 ratings)](https://appshunter.io/ios/app/codon-one-biology-study/id1517313390/reviews) |
| Number of ratings | 2 | **24** |
| Positive reviews | 0.0% of reviews | **76.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Freemium | Free with in-app purchases |
| Size | 106 MB | 277 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Antonio Giarrusso](https://appshunter.io/developer/1433879699) | [Daniel Gebert](https://appshunter.io/developer/1517313389) |

## What reviewers say

### iBiology™

[App page](https://appshunter.io/ios/app/ibiology/id1330652402)

This biology app serves as a personal tutor, offering clear explanations and organized topics to help users master biology concepts and prepare for exams. It features an advanced search and synthesis for efficient learning.

**Highlights:** 30+ biology topics explained clearly, 4 core biology sections, Effective synthesis for definitions, Advanced search algorithm, Interactive quizzes (Pro version), Topic insights (Pro version)

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

**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 iBiology™ free?

iBiology™ 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, iBiology™ or Codon One?

iBiology™ is rated higher. iBiology™ averages 4.5 out of 5 from 2 ratings, while Codon One averages 4.5 from 24 ratings.

### Do iBiology™ or Codon One have ads?

Neither iBiology™ nor Codon One shows ads.

### Which is updated more often, iBiology™ or Codon One?

iBiology™ ships an update every 2 weeks, and Codon One every 3 weeks. Most recently, iBiology™ was updated on October 10, 2026 and Codon One on October 24, 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.*