# Codon One vs MyDugsi

The clearest difference is in-app purchases: MyDugsi at none against Codon One's 7. MyDugsi also leads on update cadence (weekly vs monthly). Codon One's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

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

Codon One ships an update monthly, MyDugsi weekly. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Codon One | MyDugsi |
| --- | --- | --- |
| Price | Free | Free |
| 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 | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 269 MB | 55 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Gebert](https://appshunter.io/developer/1517313389) | [Keyton ApS](https://appshunter.io/developer/1558275857) |

## What reviewers say

### Codon One

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

This app simplifies complex biology concepts through short, illustrated lessons and interactive quizzes. It offers AI-powered study assistance and allows users to create flashcards from lecture slides or PDFs. Study materials are available offline.

**Highlights:** Short, illustrated lessons, Interactive quizzes, AI study helper (Ribo), Flashcard creation from slides/PDFs, Offline study mode, Glossary and review tools

**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 |


### MyDugsi

[App page](https://appshunter.io/ios/app/mydugsi/id6816023548)

**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 MyDugsi free?

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

### Do Codon One or MyDugsi have ads?

Neither Codon One nor MyDugsi shows ads.

### Which is updated more often, Codon One or MyDugsi?

Codon One ships an update monthly, and MyDugsi weekly. Most recently, Codon One was updated on November 11, 2026 and MyDugsi 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.*