# Eterna vs Cribbage for iMessage

The clearest difference is price: Eterna at Free against Cribbage for iMessage's $0.99. Eterna also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 18.4). On ads, in-app purchases and device support there is nothing between them.

Eterna is free to download; Cribbage for iMessage costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Eterna ships an update every 3 weeks, Cribbage for iMessage every 2 months. The most recent releases landed on September 17, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Eterna | Cribbage for iMessage |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.7 (15 ratings)](https://appshunter.io/ios/app/eterna/id1513216417/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 188 MB | 11 MB |
| Requires iOS | **13.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Vital Mind Media](https://appshunter.io/developer/1513216416) | [Stefan J. Wernli](https://appshunter.io/developer/1813321494) |

## What reviewers say

### 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


### Cribbage for iMessage

[App page](https://appshunter.io/ios/app/cribbage-for-imessage/id6746084198)

**In-app purchases:** none


## Frequently asked questions

### Is Eterna free?

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

### Is Cribbage for iMessage free?

Cribbage for iMessage costs $0.99, with no in-app purchases.

### Do Eterna or Cribbage for iMessage have ads?

Neither Eterna nor Cribbage for iMessage shows ads.

### Which is updated more often, Eterna or Cribbage for iMessage?

Eterna ships an update every 3 weeks, and Cribbage for iMessage every 2 months. Most recently, Eterna was updated on September 17, 2026 and Cribbage for iMessage on September 8, 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.*