# ONF Link vs ReefBay

The clearest difference is review sentiment: ReefBay at 82% against ONF Link's 17%. ReefBay also leads on rating (4.8 vs 2.1) and update cadence (weekly vs every 6 months). ONF Link's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. ReefBay sells 4 in-app purchases, starting at $4.99 per month. ONF Link asks for nothing beyond the download.

ReefBay holds the better App Store score, 4.8 against 2.1. That said, the two scores are not equally well evidenced: ReefBay has 464 ratings behind it against 27, so its average is the more settled of the two. Written reviews point the same way: 17% of ONF Link's written reviews are positive against 82% of ReefBay's.

ONF Link ships an update every 6 months, ReefBay weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | ONF Link | ReefBay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.1 (27 ratings)](https://appshunter.io/ios/app/onf-link/id1453834714/reviews) | **[4.8 (464 ratings)](https://appshunter.io/ios/app/reefbay/id6478054386/reviews)** |
| Number of ratings | 27 | **464** |
| Positive reviews | 16.7% of reviews | **82.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 81 MB | 88 MB |
| Requires iOS | **10.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [YOU HAU CO.LTD](https://appshunter.io/developer/1032206108) | [Toolit Media LLC](https://appshunter.io/developer/1331221462) |

## What reviewers say

### ONF Link

[App page](https://appshunter.io/ios/app/onf-link/id1453834714)

Control your smart lighting devices with this app. Adjust brightness, color temperature, and create personalized daylight cycles. Schedule lighting changes to match different times of the day.

**Highlights:** Manage ONF devices, Adjust brightness and color temperature, Create custom lighting schedules, Personalized daylight cycles, Manual and daylight cycle modes

**Features:** macOS Compatibility

**In-app purchases:** none


### ReefBay

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

Manage your saltwater aquarium with this app. Track water parameters, log inhabitants, and get task reminders. Connect with a community of hobbyists, explore a marketplace, and access guides for a thriving reef tank.

**Highlights:** Local marketplace for buying/selling, Explore coral and fish listings, Personalized tank profiles, Water parameter tracking, 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


## Frequently asked questions

### Is ONF Link free?

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

### Is ReefBay free?

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

### Which has better reviews, ONF Link or ReefBay?

ReefBay is rated higher. ONF Link averages 2.1 out of 5 from 27 ratings, while ReefBay averages 4.8 from 464 ratings.

### Do ONF Link or ReefBay have ads?

ReefBay shows ads; ONF Link does not.

### Which is updated more often, ONF Link or ReefBay?

ONF Link ships an update every 6 months, and ReefBay weekly. Most recently, ONF Link was updated on October 24, 2026 and ReefBay on October 24, 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.*