ReefLogger
Reef tank dosing & log
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Test, log, and dose your reef with confidence. ReefLog spots parameters drifting out of range and tells you exactly how many mL to dose — all private, all on your device.
ReefLog is the fast, private way to keep your saltwater or reef aquarium stable — and the only log that tells you what to actually do about your numbers.
Most aquarium apps just store readings. ReefLog reads the trend and turns it into action: it sees your alkalinity slipping, projects when it will fall out of range, and recommends the exact dose to hold it steady.
LOG IN SECONDS
• Track alkalinity, calcium, magnesium, nitrate, phosphate, salinity, temperature, and pH
• Sensible ideal ranges built in, with instant in-range / out-of-range feedback
• Back-date readings and fix mistakes easily
SEE TRENDS BEFORE TROUBLE
• Clean history charts with the ideal range shaded in
• A "Today" view that surfaces what needs attention, ranked by urgency
• Early warnings when a parameter is trending out of range
KNOW EXACTLY WHAT TO DOSE
• Calibrate your supplements once to your own tank — no guessing a brand's strength
• Get precise maintenance doses that offset your tank's real consumption
• Get correction plans that respect safe daily raise limits
STAY ON SCHEDULE
• Maintenance reminders for water changes, dosing, and filter care
• Per-task notifications, fully on-device
PRIVATE BY DESIGN
• Everything stays on your device — no account, no cloud, no tracking
• Your tank data is yours
Everything in ReefLog is free for a single tank — full history, trend charts, the dosing planner, maintenance reminders, and CSV export. A one-time premium upgrade adds unlimited tanks so you can track every system you keep — pay once, yours forever. No subscription.
Whether you run a nano reef or a mixed reef showpiece, ReefLog helps you keep it stable with less guesswork.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Jan Roldan Hernandez, 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 Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Jan Roldan Hernandez
- Size
- 4.8 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- ReefLogger Pro USD 11.99
- Copyright
- © 2026 Jan Hernandez