ReefLog – Reef Aquarium Log

ReefLog is a simple, private way to keep your reef and saltwater aquarium healthy.
Log your water tests, stay on top of maintenance, and see at a glance whether your
tank is in a safe range — all without creating an account.

WATER PARAMETERS, MADE CLEAR
• Log salinity, temperature, pH, alkalinity, calcium, magnesium, nitrate,
phosphate and more.
• Enter values in the units you actually use — ReefLog stores them consistently
behind the scenes.
• Instant out-of-range alerts when a reading drifts outside safe reef levels, so
problems get caught early.

TANK HEALTH AT A GLANCE
• A dashboard that summarizes your tank's current status.
• See your latest readings and what needs attention, without digging.

TRENDS YOU CAN TRUST
• Charts plot each parameter over time with safe-range bands, so you can see
stability and spot swings before they become problems.

NEVER MISS MAINTENANCE
• Schedule water changes, dosing, filter media swaps, testing and more.
• Local reminders notify you on time — nothing is sent to a server.

KEEP TRACK OF YOUR TANK
• Livestock registry for your fish, corals and inverts.
• Equipment registry for pumps, heaters, lights and reactors.
• Attach photos to your records (Pro).

PRIVATE BY DESIGN
• ReefLog is local-first: your aquarium data lives on your device.
• No account, no sign-up, no cloud — and no third-party analytics or ads.

FREE TO START
The free version covers one tank with everyday logging. Upgrade to ReefLog Pro
to unlock:
• Unlimited tanks
• Full history with 7/30/90-day charts
• Unlimited maintenance reminders
• Photo logs for your livestock and equipment

ReefLog Pro is available as a monthly or annual subscription, or a one-time
lifetime purchase. Subscriptions renew automatically until cancelled; you can
manage or cancel anytime in your Google Play account.

Whether you run a nano reef or a full-blown SPS system, ReefLog helps you keep
your parameters steady and your livestock thriving.