# Codon One vs Class 11 Biology Notes

The clearest difference is price: Codon One at Free against Class 11 Biology Notes's $0.99. Codon One also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 44 months). Class 11 Biology Notes's advantage is in-app purchases (none vs 7) and iOS requirement (13.0 vs 15.6). On device support there is nothing between them.

Codon One is free to download; Class 11 Biology Notes costs $0.99 up front. Codon One sells 7 one-off in-app purchases. Class 11 Biology Notes asks for nothing beyond the download.

Codon One ships an update every 3 weeks, Class 11 Biology Notes every 44 months. The most recent releases landed on October 29, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Codon One | Class 11 Biology Notes |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.5 (25 ratings)](https://appshunter.io/ios/app/codon-one-biology-study/id1517313390/reviews)** | — |
| Number of ratings | **25** | — |
| Positive reviews | 76.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 44 months |
| Monetization | Free with in-app purchases | — |
| Size | 277 MB | 22 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Gebert](https://appshunter.io/developer/1517313389) | [Ranjeet Kumar](https://appshunter.io/developer/1476822683) |

## 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 |


### Class 11 Biology Notes

[App page](https://appshunter.io/ios/app/class-11-biology-notes/id6444937788)

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

**In-app purchases:** none


## Frequently asked questions

### Is Codon One free?

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

### Is Class 11 Biology Notes free?

Class 11 Biology Notes costs $0.99, with no in-app purchases.

### Do Codon One or Class 11 Biology Notes have ads?

Class 11 Biology Notes shows ads; Codon One does not.

### Which is updated more often, Codon One or Class 11 Biology Notes?

Codon One ships an update every 3 weeks, and Class 11 Biology Notes every 44 months. Most recently, Codon One was updated on October 29, 2026 and Class 11 Biology Notes on October 18, 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.*