# Reefs vs Critter Coasters

The clearest difference is price: Critter Coasters at Free against Reefs's $1.00. Critter Coasters also leads on in-app purchases (none vs 6) and ads (none vs shown). Reefs's advantage is update cadence (every 3 months vs every 29 months) and iOS requirement (11.0 vs 17.0). On device support there is nothing between them.

Critter Coasters is free to download; Reefs costs $1.00 up front. Reefs sells 6 in-app purchases, starting at $0.99 per month. Critter Coasters asks for nothing beyond the download.

Reefs ships an update every 3 months, Critter Coasters every 29 months. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Reefs | Critter Coasters |
| --- | --- | --- |
| Price | $1.00 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/reefs/id337679831/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 42.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 29 months |
| Monetization | Free with in-app purchases | — |
| Size | 142 MB | 151 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Manhattan Reefs LLC](https://appshunter.io/developer/337679835) | [Stayhealthy](https://appshunter.io/developer/1435974933) |

## What reviewers say

### Reefs

[App page](https://appshunter.io/ios/app/reefs/id337679831)

Your mobile guide to saltwater and marine reef aquariums. Discover local fish stores, browse a live livestock marketplace, read hobby news, and identify corals and fish with an extensive ID tool.

**Highlights:** Local Fish Store Map, Real-time Livestock Marketplace, Daily Hobby News Blog, Forum & Club Connections, Reefs Magazine Access, Coral, Fish, Invert ID Tool

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $0.99 | per month |
| Coral Database | $0.99 | one-time |
| Fish Database | $0.99 | one-time |
| Inverts Database | $0.99 | one-time |
| Pests Database | $0.99 | one-time |
| Reef Database | $0.99 | one-time |


### Critter Coasters

[App page](https://appshunter.io/ios/app/critter-coasters/id1597163000)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Reefs free?

Reefs costs $1.00, and also offers in-app purchases.

### Is Critter Coasters free?

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

### Do Reefs or Critter Coasters have ads?

Reefs shows ads; Critter Coasters does not.

### Which is updated more often, Reefs or Critter Coasters?

Reefs ships an update every 3 months, and Critter Coasters every 29 months. Most recently, Reefs was updated on September 18, 2026 and Critter Coasters on September 21, 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.*