The Smart Fishkeeping App for Aquarists
Track water parameters, plan safe fish stocking, and keep your tanks healthy. View trends, compatibility, and care reminders in one place.
How it works →
Aquarium keeping shouldn’t be guesswork
Many hobbyists struggle with:
Small mistakes can quickly lead to stressed or unhealthy fish.
App-aquatic helps you stay in control of your aquarium with simple tools designed for fishkeepers.
Smart Stocking Calculator
Avoid overcrowding and see whether your tank is safely stocked. Plan tank stocking with bioload, compatibility, and pH/temp checks.
Try our free online stocking calculator →
Fish Compatibility Checker
Make sure your species work together before adding new fish. See compatibility, group sizes, and swim zone balance — no more guessing if fish will get along.
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Aquarium Log & Water Tracking
Track ammonia, nitrite, nitrate, pH and temperature trends over time. History and trends so you spot trouble early.
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Caretaker personalized to your tank setup
Get personalized care reminders and maintenance schedules tailored to your tank size, fish species, and equipment. Never miss a water change or filter clean again.
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Track equipment and supplies
Keep track of filters, heaters, pumps, and supplies. Know when to replace media, replace parts, and reorder — so you’re never caught unprepared.
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Extensive fish library
Browse detailed profiles on hundreds of species. Care requirements, compatibility, tank size, and ideal water parameters — all in one searchable library.
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New to fishkeeping? Start here
Plan before you buy. Use our fishkeeping guides so you don’t guess.
Free stocking calculators
Plan tank stocking with bioload, compatibility, and pH/temp checks. No sign-up required. How to use. Tank size calculator.
Our Users
What aquarists are saying about App-aquatic.
Excellent app for fish keeping tracking.— App-aquatic user
One of the things I found most valuable is how the platform emphasizes clarity and practical guidance. The dashboards are designed to highlight metrics that matter like water quality trends and stock compatibility so you are not left guessing how your tank is doing. I also appreciate that they have built in helpful guides and resources, especially for beginners covering topics from tank cycling to maintaining healthy water conditions.— App-aquatic user
Actually really thorough and genuinely useful.— App-aquatic user
I love this app. Really clean layout, simple to understand. I have several tanks and it’s really helping me manage them with daily reminders for each tank. I don’t know how I managed without it.— App-aquatic user
My son just recommended this app to me to help track my 3 tanks — love how easy it is to use and the dashboard section. I actually had to adjust the temperature in one of my tanks given the different fish based upon one of the insights from this app. I have not really used the education section as I know what I’m doing but may check it out later. Would be great to be able to share tank setups with people :)— App-aquatic user
Our promise
We want you to love App-aquatic. Free trial so you can try before you subscribe. No ads, ever. See FAQ for details.
Start managing your aquarium today
Download App-aquatic and keep your fish thriving.