Reef Buddy: Reef Tank Tracker
Saltwater tank tests & log
Free · In-App Purchases
Log water tests for saltwater aquariums. Track KH, Ca, Mg, salinity, pH, temperature trends and spot reef swings early with automated insights.
Reef Buddy – Track Your Reef Tank With Confidence
Reef Buddy is the reef tracker and water test log built for saltwater tank and saltwater aquarium keepers. Log water tests, monitor parameter trends, and understand what is changing in your reef before small swings become real problems.
Track Every Essential Reef Parameter
Record KH, salinity, pH, Ca, Mg, NO₂, NO₃, PO₄, SiO₂, temperature, and more. Keep a clear aquarium log with visual trends for the values reef keepers watch most.
Smart Insights for Saltwater Aquariums
Get automated insights from your measurements so you can react earlier, keep your reef tank stable, and make better maintenance decisions.
Sync Across Devices
All your data is safely stored and automatically synced across your iPhone and iPad.
Manual Test Help
Enter results from your favorite test kits faster with guided steps designed for reef routines, regular water tests, and day-to-day reef journaling.
Unlock Premium with Shrimpy
Shrimpy, your reef assistant, unlocks powerful features:
• Expert analysis of your tank data
• Personalized advice
• Photo analysis of your aquarium
• Ability to ask questions and get reefing tips
Why Reef Keepers Choose Reef Buddy
• Built for reef tanks and saltwater aquariums
• Clean tracking without unnecessary clutter
• Compatible with major test kits, including Red Sea, Salifert, Hanna, and more
Subscription Info
Shrimpy Premium is available as a monthly or yearly subscription.
Payment will be charged to your iTunes account at confirmation of purchase.
Subscriptions auto-renew unless cancelled 24 hours before the end of the period.
Manage your subscription anytime in your Apple account settings.
Terms & Privacy Policy: https://reef-buddy.app
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Keep a closer eye on your reef’s stability with clear trend insights for your water parameters. You can now choose whether to receive Reef Buddy news and product updates during setup or later from your account.
The developer, maxime marinel, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- District Web
- Size
- 43.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 5 more
- English, Dutch, French, German, Polish, Portuguese
- Age Rating
4+
- 4+
- Contains
User-Generated Content
- In-App Purchases
Yes
- Reef buddy pro month USD 4.99
- Reef buddy pro annual USD 49.99
- Reef Buddy Pro Weekly USD 0.99
- Reef Buddy Pro USD 1.99
- Copyright
- © District-web 2026