# Colony B vs Eterna

The clearest difference is rating: Eterna at 3.7 against Colony B's 2.4. Eterna also leads on review sentiment (33% vs 25%). Colony B's advantage is iOS requirement (7.0 vs 13.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Eterna holds the better App Store score, 3.7 against 2.4. Both are backed by a comparable volume of ratings — 8 and 15 respectively. Written reviews point the same way: 25% of Colony B's written reviews are positive against 33% of Eterna's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Colony B | Eterna |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (8 ratings)](https://appshunter.io/ios/app/colony-b/id988892383/reviews) | **[3.7 (15 ratings)](https://appshunter.io/ios/app/eterna/id1513216417/reviews)** |
| Number of ratings | 8 | **15** |
| Positive reviews | 25.0% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 140 MB | 188 MB |
| Requires iOS | **7.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Diga Design](https://appshunter.io/developer/964585156) | [Vital Mind Media](https://appshunter.io/developer/1513216416) |

## What reviewers say

### Colony B

[App page](https://appshunter.io/ios/app/colony-b/id988892383)

Contribute to scientific research by collecting and growing microbes in a fast-paced puzzle game. Unlock badges to learn about microorganisms and help analyze data for a citizen science project.

**Highlights:** Collect and grow microbes, Fast-paced puzzle gameplay, Unlock learning badges, Contribute to scientific research, Citizen science participation

**Features:** macOS Compatibility

**In-app purchases:** none


### Eterna

[App page](https://appshunter.io/ios/app/eterna/id1513216417)

Engage in a citizen science game to design RNA molecules for medical research. Solve puzzles to unlock lab access and contribute to inventing new medicines through challenges.

**Highlights:** Design RNA molecules, Solve scientific puzzles, Participate in medical research, Invent new medicines, Unlock lab access

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

**In-app purchases:** none


## Frequently asked questions

### Is Colony B free?

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

### Is Eterna free?

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

### Which has better reviews, Colony B or Eterna?

Eterna is rated higher. Colony B averages 2.4 out of 5 from 8 ratings, while Eterna averages 3.7 from 15 ratings.

### Do Colony B or Eterna have ads?

Neither Colony B nor Eterna shows ads.

### Which is updated more often, Colony B or Eterna?

Colony B ships an update every 3 weeks, and Eterna every 3 weeks. Most recently, Colony B was updated on October 2, 2026 and Eterna on October 5, 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.*