# Glykolyse vs Codon One

The clearest difference is price: Codon One at Free against Glykolyse's $1.99. Codon One also leads on update cadence (every 3 weeks vs every 14 months) and device support (3 vs 1). Glykolyse's advantage is in-app purchases (none vs 7). On ads and iOS requirement there is nothing between them.

Codon One is free to download; Glykolyse costs $1.99 up front. Codon One sells 7 one-off in-app purchases. Glykolyse asks for nothing beyond the download.

Glykolyse ships an update every 14 months, Codon One every 3 weeks. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Glykolyse | Codon One |
| --- | --- | --- |
| Price | $1.99 | **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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 2 MB | 277 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Torgeir Holen](https://appshunter.io/developer/640499199) | [Daniel Gebert](https://appshunter.io/developer/1517313389) |

## What reviewers say

### Glykolyse

[App page](https://appshunter.io/ios/app/glykolyse/id1363767690)

**Features:** macOS Compatibility

**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 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 |


## Frequently asked questions

### Is Glykolyse free?

Glykolyse costs $1.99, with no in-app purchases.

### Is Codon One free?

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

### Do Glykolyse or Codon One have ads?

Neither Glykolyse nor Codon One shows ads.

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

Glykolyse ships an update every 14 months, and Codon One every 3 weeks. Most recently, Glykolyse was updated on October 25, 2026 and Codon One on October 27, 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.*