# ReefBay vs Reefi

The clearest difference is ratings volume: ReefBay at 488 against Reefi's 1. Reefi's advantage is rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. ReefBay sells 4 in-app purchases, starting at $4.99 per month and Reefi sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Reefi holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ReefBay has 488 ratings behind it against 1, so its average is the more settled of the two.

ReefBay ships an update every 8 days, Reefi every 10 days. The most recent releases landed on November 8, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ReefBay | Reefi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (488 ratings)](https://appshunter.io/ios/app/reefbay/id6478054386/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/reefi-aquarium-tracker/id6756351188/reviews)** |
| Number of ratings | **488** | 1 |
| Positive reviews | 82.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 8 days** | Every 10 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 88 MB | 65 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Toolit Media LLC](https://appshunter.io/developer/1331221462) | [Tibbe Naarding](https://appshunter.io/developer/1860234190) |

## What reviewers say

### ReefBay

[App page](https://appshunter.io/ios/app/reefbay/id6478054386)

Manage your saltwater aquarium with this comprehensive app. Track water parameters, log inhabitants, and receive task reminders. Connect with a community of hobbyists, explore local marketplaces, and access helpful guides.

**Highlights:** Local marketplace for buying/selling, Explore coral and fish databases, Personalized tank profiles, Water parameter tracking with charts, Community forums and support, Task reminders for maintenance, Aquarium guides and resources

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReefBay DeepDive | $4.99 | per month |
| ReefBay DeepDive | $4.99 | per month |
| ReefBay DeepDive | $29.99 | per year |
| ReefBay DeepDive | $39.99 | per year |

**What reviewers like**

- 👍 Intuitive and easy-to-use interface
- 📊 Comprehensive parameter tracking with visual graphs
- 🌐 Active community for sharing and learning
- 🛒 Integrated marketplace for buying/selling coral and equipment
- 💬 Social hub connecting reef keepers

**What reviewers complain about**

- 🐛 Coral identification feature is inaccurate
- 🎨 Inconsistent UI presentation and design
- ❌ Navigation dead ends and UI issues
- 📧 Excessive email notifications despite unsubscribing
- 🔐 Account deletion/data loss concerns

**Reported bugs**

- Coral ID misidentifies corals as fish
- App stopped working after update
- Cannot click create button due to text overlap
- Account mysteriously deleted
- Unsubscribe function not working for emails

**Requested features**

- Add ammonia and nitrite to water parameter tracking
- Improve coral identification accuracy
- Enhance UI consistency and presentation
- Better email notification management


### Reefi

[App page](https://appshunter.io/ios/app/reefi-aquarium-tracker/id6756351188)

This app helps aquarium owners manage their tanks with smart tools for tracking water parameters, maintenance, and livestock health. It provides reminders, a dosing calculator, and an AI coach to ensure a healthy aquatic ecosystem.

**Highlights:** Water parameter tracking, Maintenance reminders, Dosing calculator, Livestock health logs, Equipment management, AI aquarium coach

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reefi Pro Weekly | $3.99 | per 7 days |
| Reefi Pro Monthly | $9.99 | per month |
| Reefi Pro Annual | $79.99 | per year |


## Frequently asked questions

### Is ReefBay free?

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

### Is Reefi free?

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

### Which has better reviews, ReefBay or Reefi?

Reefi is rated higher. ReefBay averages 4.8 out of 5 from 488 ratings, while Reefi averages 5.0 from 1 ratings.

### Do ReefBay or Reefi have ads?

Both ReefBay and Reefi show ads.

### Which is updated more often, ReefBay or Reefi?

ReefBay ships an update every 8 days, and Reefi every 10 days. Most recently, ReefBay was updated on November 8, 2026 and Reefi on October 30, 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.*