ReefBay vs Reefi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ReefBay
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.
- 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
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About ReefBay Dive into the vibrant world of saltwater aquariums with ReefBay, the premier app designed exclusively for the marine hobbyist community. Whether you're a seasoned aquarist or just starting out, ReefBay offers an unparalleled platform to explore, compare, and immerse yourself in the mesmerizing realm of corals, fish, and much more. With ReefBay, managing your reef tank is easier than ever. Key Features - Local Marketplace: Connect with fellow reef enthusiasts to share insights, discover unique products, and buy or sell within your local community. - Explore Coral/Fish: Search through thousands of coral and fish to compare prices and find the perfect piece to enhance your saltwater aquarium. - Personalized Tank Profiles: Craft personalized profiles for each of your aquariums, meticulously logging diverse inhabitants and precise water parameters. This streamlined aquarium log showcases your aquatic havens and provides valuable insights to others in the community. - Parameter Tracking: Monitor your reef tank's water parameters effortlessly. Visualize your data in intuitive charts to maintain a thriving saltwater ecosystem. - Community and Support: Join a vibrant community of saltwater enthusiasts and reef tank hobbyists. Share insights, seek advice, and discover the latest trends in the marine aquarium world. - Task Reminders: Stay on top of your aquarium maintenance with automatic reminders for tasks like water changes and equipment checks, making you a more efficient aquarium manager. - Guides and Resources: Access valuable aquarium guides to help you maintain and grow your reef tank, from coral selection to water chemistry management. Why ReefBay? At ReefBay, we understand the passion and dedication it takes to maintain a thriving saltwater aquarium. That’s why we’ve created an app that simplifies aquarium management while connecting you to a global community. Whether you're tracking parameters, organizing your aquarium log, or seeking coral care tips, ReefBay is the perfect aquarium manager in your pocket. The ocean's wonder is just a tap away! *Creating unlimited tank profiles and using DeepDive features requires a subscription. TERMS: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For information or inquires contact us at info@reefbay.com
Reefi
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.
- Water parameter tracking
- Maintenance reminders
- Dosing calculator
- Livestock health logs
- Equipment management
- AI aquarium coach
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Reefi helps you take better care of your aquarium with smart tools, clear insights, and helpful reminders. Track your water parameters, manage maintenance tasks, and stay on top of dosing schedules for both freshwater and saltwater aquariums. Reefi keeps everything organized in one clear dashboard, so you always know how your tank is doing. Manage your aquarium inhabitants by keeping an overview of fish, corals, and other livestock. Log health observations, track changes over time, and use the journal to note important events like new additions, issues, or adjustments. Reefi helps you spot patterns early and maintain a healthy ecosystem. Keep track of your equipment, such as filters, lights, heaters, and pumps. Log setup details, maintenance history, and replacements so you never lose track of what’s running in your tank. Key features: • Log and track water parameters • Maintenance tasks with reminders • Dosing calculator and planning • Inhabitant management and health logs • Aquarium journal for observations and events • Equipment tracking and maintenance • Smart insights for healthier tanks • AI-powered aquarium coach • Support for freshwater and saltwater aquariums Whether you’re a beginner or an experienced aquarist, Reefi helps you care for your aquarium with confidence. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.reefi-app.com/privacy-policy-reefi/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | ReefBay | Reefi |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (488 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 82.8% of reviews | — |
| Number of ratings | 488 — better | 1 |
| Update frequency | Every 8 days — better | Every 10 days |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 88 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Toolit Media LLC | Tibbe Naarding |
Bugs and requests
ReefBay
Reported bugs
5 issues- 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
4 requests- Add ammonia and nitrite to water parameter tracking
- Improve coral identification accuracy
- Enhance UI consistency and presentation
- Better email notification management
Reefi
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ReefBay
- ReefBay DeepDive3 Days trial$4.991 Month
- ReefBay DeepDive$4.991 Month
- ReefBay DeepDive$29.991 Year
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- ReefBay DeepDive$39.991 Year
Reefi
- Reefi Pro Weekly3 Days trial$3.997 Days
- Reefi Pro Monthly$9.991 Month
- Reefi Pro Annual3 Days trial$79.991 Year









