ReefDiary - Aquarium Log
Test. Dose. Thrive.
About
Track saltwater aquarium parameters, calculate precise dosing, and visualize trends to maintain a stable reef environment. This app offers offline functionality and local data storage for reef keepers.
What's New in ReefDiary
1.0.3
July 7, 2026
New in this update: - Added Lifetime Pro alongside monthly and yearly plans. - Added a Settings privacy control for anonymous usage analytics; reef tank names, readings, notes, dosing amounts, exports, emails, and identifiers are never sent. - Improved the Rate on App Store and support flow, including clearer TestFlight feedback handling. - Refined purchase, restore, paywall, privacy, and localization details.
MoreSubscriptions & In-App Purchases
ReefTrack Pro – Monthly
Full access to all ReefTrack Pro features.
Developer apps
FAQ
What are the main benefits of using ReefDiary?
ReefDiary helps you log aquarium parameters, calculate precise dosing amounts, and visualize trends to maintain a stable reef environment. It offers offline functionality and local data storage, ensuring your reef data stays private.
How does ReefDiary's Pro version enhance the experience?
The Pro version unlocks unlimited tanks, full long-range parameter history, advanced dosing products, custom formulas, CSV exports, and shareable reef detail images. It also allows for custom testing cadences and dosing follow-through.
What parameters can I log with ReefDiary?
You can log key saltwater aquarium parameters including Ca, Alk, Mg, pH, Salinity, Temp, NO3, and PO4. The app provides color-coded parameter cards for instant health status.
Does ReefDiary work offline?
Yes, ReefDiary is designed to work offline, making it practical for use in fish rooms or on maintenance benches without requiring an internet connection.
What are the subscription options for ReefDiary Pro?
ReefDiary Pro offers weekly, monthly, and yearly subscription plans, with a 3-day free trial for all plans. Pricing starts at $2.99/week.
How can I export my data from ReefDiary?
You can export reports for second opinions, store visits, or support threads. The Pro version offers advanced CSV exports and shareable reef detail images.
Is my reef data stored locally with ReefDiary?
Yes, ReefDiary prioritizes user privacy by keeping reef data local. No account is required, and there is no cloud sync, ensuring your sensitive aquarium information remains on your device.
What is the age rating for ReefDiary?
ReefDiary has an age rating of 4+, making it suitable for a wide range of users interested in aquarium management.
