# Coelacanth and ancient fish vs Bettarium

The clearest difference is rating: Bettarium at 4.8 against Coelacanth and ancient fish's 3.7. Bettarium also leads on review sentiment (83% vs 50%) and ratings volume (597 vs 7). Coelacanth and ancient fish's advantage is in-app purchases (none vs 2) and update cadence (every 5 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Bettarium sells 2 one-off in-app purchases. Coelacanth and ancient fish asks for nothing beyond the download.

Bettarium holds the better App Store score, 4.8 against 3.7. That said, the two scores are not equally well evidenced: Bettarium has 597 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 50% of Coelacanth and ancient fish's written reviews are positive against 83% of Bettarium's.

Coelacanth and ancient fish ships an update every 5 weeks, Bettarium every 3 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Coelacanth and ancient fish | Bettarium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (7 ratings)](https://appshunter.io/ios/app/coelacanth-and-ancient-fish/id1574487489/reviews) | **[4.8 (597 ratings)](https://appshunter.io/ios/app/bettarium-betta-fish-tank/id6499470979/reviews)** |
| Number of ratings | 7 | **597** |
| Positive reviews | 50.0% of reviews | **82.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 108 MB | 192 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yamabus](https://appshunter.io/developer/923714578) | [Himitsu Lab Inc.](https://appshunter.io/developer/448558922) |

## What reviewers say

### Coelacanth and ancient fish

[App page](https://appshunter.io/ios/app/coelacanth-and-ancient-fish/id1574487489)

Customize coelacanth colors and feed them to earn points. Excavate fossils for bonuses and purchase new backgrounds and creatures. Experience AR to bring the ancient world into your room.

**Highlights:** Color customization for coelacanth, Dynamic predation for points, Fossil excavation with bonus multipliers, Purchase background images and creatures, AR function for recreating ancient worlds

**Features:** macOS Compatibility

**In-app purchases:** none


### Bettarium

[App page](https://appshunter.io/ios/app/bettarium-betta-fish-tank/id6499470979)

Easily care for beautiful betta fish in a virtual aquarium. Watch them grow, customize their appearance, and enjoy them as a decorative table clock. This app offers a relaxing way to experience pet ownership without the real-world commitment.

**Highlights:** 3D betta fish simulation, Over 300 betta fish types, Custom fish painting, Interactive fish behavior, Table clock mode, In-game point system for new fish, Feeding reminders

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Pack | $2.99 | one-time |
| Premium Pack | $5.99 | one-time |


## Frequently asked questions

### Is Coelacanth and ancient fish free?

Coelacanth and ancient fish is free to download, with no in-app purchases.

### Is Bettarium free?

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

### Which has better reviews, Coelacanth and ancient fish or Bettarium?

Bettarium is rated higher. Coelacanth and ancient fish averages 3.7 out of 5 from 7 ratings, while Bettarium averages 4.8 from 597 ratings.

### Do Coelacanth and ancient fish or Bettarium have ads?

Both Coelacanth and ancient fish and Bettarium show ads.

### Which is updated more often, Coelacanth and ancient fish or Bettarium?

Coelacanth and ancient fish ships an update every 5 weeks, and Bettarium every 3 months. Most recently, Coelacanth and ancient fish was updated on November 3, 2026 and Bettarium on November 4, 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.*