# Codon One vs Human Cells..

The clearest difference is ads: Codon One at none against Human Cells..'s shown. Human Cells..'s advantage is update cadence (weekly vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Codon One sells 7 one-off in-app purchases and Human Cells.. sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Codon One ships an update every 3 weeks, Human Cells.. weekly. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Codon One | Human Cells.. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (24 ratings)](https://appshunter.io/ios/app/codon-one-biology-study/id1517313390/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 277 MB | 174 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Gebert](https://appshunter.io/developer/1517313389) | [Olga Ivanova](https://appshunter.io/developer/1733570435) |

## 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 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 |


### Human Cells..

[App page](https://appshunter.io/ios/app/human-cells/id6749825867)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| subscription | $1.99 | per month |
| sponsorship | $1.99 | one-time |


## Frequently asked questions

### Is Codon One free?

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

### Is Human Cells.. free?

Human Cells.. is free to download, with in-app purchases available.

### Do Codon One or Human Cells.. have ads?

Human Cells.. shows ads; Codon One does not.

### Which is updated more often, Codon One or Human Cells..?

Codon One ships an update every 3 weeks, and Human Cells.. weekly. Most recently, Codon One was updated on October 10, 2026 and Human Cells.. on October 14, 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.*