Your aquarium. Under control.
The app that transforms how you care for your aquarium. Monitor, manage and evolve — all in one place.
The world's most beautiful hobby deserves the best technology.
Monitor your parameters.
Care for your fauna.
Build your dream aquarium.
Turn your phone into the best tool for your aquarium.
Download ReefFlow for free and get full control of your aquarium in the palm of your hand.
For beginners. For experts. For those who live the hobby.
Whether you're a first-time aquarist or an expert with years of experience, ReefFlow adapts to your level and helps you evolve.
R e e f F l o w w i l l a l w a y s b e f r e e t o e x p l o r e .
We believe every aquarist deserves access to quality tools. ReefFlow is and will always be free to use.
Where technology meets the ocean.
Aquarium Management
Register and manage multiple aquariums with all details and settings.
Fauna Control
Register fish, corals and invertebrates from a complete species database.
Water Parameters
Monitor pH, ammonia, nitrite and more with time-series charts.
Aquarium Diary
Log photos, tests and observations to track your aquarium's evolution.
Task Scheduling
Schedule maintenance, water changes and recurring tasks so you never forget.
All in One Place
Manage aquariums, fauna, parameters, finances and much more in a single app.
How It Works
Download the App
Available for free on iOS and Android.
Complete the Onboarding
Set up your profile and register your aquarium in minutes with our interactive guide.
Log Your First Test
Add your aquarium water parameters and start tracking your progress.
Get Your Aquarium Score
Our intelligence analyzes your data and generates a health score for your aquarium.
Evolve in the Hobby
Use insights, tools and calculators to take your aquarium to the next level.
Together for the world's most beautiful hobby.
Be part of a community of passionate aquarists. Share experiences, learn and evolve together.
Tools
Free Calculators
Online tools to plan and maintain your aquarium
FAQ
Everything you need to know about ReefFlow.
Quick answers to the most common questions from new and prospective users.
What is ReefFlow?
ReefFlow is an app for marine aquarium and reef tank hobbyists. It centralizes water parameter tracking, maintenance reminders, dosing, aquarium journal, coral, fish and equipment catalog, plus an AI assistant (ReefMind) that reviews your parameters and suggests adjustments.
Is ReefFlow free?
The download is free, and the free plan covers 1 aquarium with ads. A $1.99 plan removes ads. Higher tiers unlock multiple aquariums and advanced features.
Does ReefFlow work for marine and reef tanks?
Yes. ReefFlow is built specifically for marine and reef tanks (FOWLR, mixed, soft, LPS and SPS). All parameters, dosing, species and equipment data target saltwater systems.
Which platforms is ReefFlow available on?
iOS (App Store) and Android (Google Play). The app supports English, Portuguese and Spanish.
Which water parameters can I track?
14 parameters in total: salinity, alkalinity (KH/dKH), calcium, magnesium, nitrate (NO3), phosphate (PO4), pH, temperature, ORP and others — plus custom parameters. With trend graphs, target ranges and AI commentary.
Does ReefFlow have a coral and fish catalog?
Yes. Reefpedia covers corals (LPS, SPS, soft, zoanthids), marine fish and invertebrates, with care requirements, compatibility, lighting and flow recommendations.
Can I plan a new reef tank with ReefFlow?
Yes. The Aquarium Planner is a step-by-step wizard covering dimensions, equipment, aquascape, livestock, budget and maturation timeline.
Does ReefFlow integrate with hardware?
Partner integrations are rolling out — the AquaWiz KH Controller Gen 4 is currently being integrated, with more partners on the roadmap.
Are the calculators free?
Yes. Salt mix, alkalinity adjustment, calcium/magnesium dosing, water change volume and refractometer correction calculators are available in-app and at reefflow.com.br/en/calculators.
How does ReefFlow compare to other aquarium apps?
ReefFlow combines parameters, maintenance, journal, species and equipment catalog, calculators, planner and AI in a single app focused on marine aquariums. Most competing apps only cover one slice (e.g. only parameters, or only catalog).