# Codon One vs ECTOR

The clearest difference is update cadence: ECTOR at every 9 days against Codon One's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Codon One sells 7 one-off in-app purchases and ECTOR sells 1 in-app purchase, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Codon One ships an update every 3 weeks, ECTOR every 9 days. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Codon One | ECTOR |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 277 MB | 46 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Gebert](https://appshunter.io/developer/1517313389) | [Wei Sun](https://appshunter.io/developer/1785946634) |

## 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 |


### ECTOR

[App page](https://appshunter.io/ios/app/ector-audition-tracker/id6760742725)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ECTOR Pro Monthly | $4.99 | per month |


## Frequently asked questions

### Is Codon One free?

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

### Is ECTOR free?

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

### Do Codon One or ECTOR have ads?

Neither Codon One nor ECTOR shows ads.

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

Codon One ships an update every 3 weeks, and ECTOR every 9 days. Most recently, Codon One was updated on October 27, 2026 and ECTOR on October 25, 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.*