
ReefDiary - Aquarium Log
Test. Dose. Thrive.
0 ratings
Free
In-App Purchases
About
Log saltwater aquarium parameters, spot stability drift, calculate dosing amounts, and keep reef care decisions grounded in your own data.
KEY FEATURES:
- Log Ca, Alk, Mg, pH, Salinity, Temp, NO3, PO4 in seconds
- 2-part dosing calculator (BRS, ESV, Tropic Marin, custom)
- Color-coded parameter cards show instant health status
- Trend charts reveal drift, recovery, and repeat patterns
- Exportable reports for second opinions, store visits, or support threads
- Multiple tank support with separate histories and routines
BUILT FOR REEF KEEPERS:
- No account required, no cloud sync; reef data stays local
- Works offline - practical for fish rooms and maintenance benches
- Dense, scannable interface designed for daily reef checks
PRO FEATURES (monthly, yearly, or lifetime):
- Unlimited tanks and full long-range parameter history
- Advanced dosing products and custom formulas
- CSV exports and shareable reef detail images
- Custom testing cadence and dosing follow-through
Free to download. Pro unlocks the long view: full history, reports, formulas, routines, and unlimited reef systems.
LEGAL:
- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
- Privacy Policy: https://peachuinc.github.io/legal/reefdiary/
Show more
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.
MoreSubscription plans
ReefTrack Pro – Monthly
Full access to all ReefTrack Pro features.
$7.991 Month
3 Days trial






