The Fishkeeping App That Does the Hard Part
Scan fish, test water, and keep notes in one place so you are not juggling five apps and a notebook.
See what it does →
Most fish problems are avoidable.
Overstocked tanks · Wrong water · Incompatible fish · Missed maintenance
App-aquatic catches these before they cost you. Scan, log, simulate - then get on with enjoying your tank.
Test Your Water In Seconds
Log a reading and instantly know what it means - and what to do about it.
- 📊 Full parameter history - spot problems before they hit your fish
- 📈 Trend charts - see if your tank is stable or slowly drifting
- 💡 Straight readouts in plain language when a number looks off
Set Up a Tank Without the Faff
Add tank size, filter, fish, and plants by hand in a few taps, or use the camera helper when you want it. Nothing is locked in until you say so.
- ⚡ Manual setup is the normal path - fill the forms like a normal person
- ✏️ Optional scan-and-fill if you would rather point the camera than type
- 🛠️ Edit any field afterwards - wonky auto-fill gets fixed before it matters
Meant for real tanks, not demo screens.
See how setup works →
Scan Any Fish or Plant. Know What You’re Adding.
One photo - ID, care needs, and health signals - before anything new hits your water.
- 🔬 Flags disease, stress, and damage on fish from a single frame
- 🌿 Plant-friendly path: know light, CO₂ appetite, and growth habit at a glance
- ⚗️ Runs the add against your parameters, space, and what you already keep
Know Your Tank Instantly
One screen. Live health, bioload, and alerts - no digging through menus.
- ❤️ Health score that tells you thrive vs. stress at a glance
- ⚖️ Bioload tuned to your real volume, stock, and filtration
- 🧪 Add-a-fish simulator - see the impact before you buy
- 📌 Important nudges on the main screen instead of hunting through menus
Details are there if you want to dig.
Explore the dashboard →
Your Tank’s Memory - Fully Automated
Every reading, every change, every pattern - logged without lifting a finger.
- 📅 Complete timeline: every test, water change, and livestock addition
- 📉 Catch slow-burn problems - nitrate creep, pH drift, recurring spikes
- 🔁 Months and years of history, always at a glance
Old tests beat memory when something goes sideways.
See tank history →
Strip Scanner - Any Kit, Always Free, Works Offline
Other scanners charge per scan, lock you to one brand, or need Wi-Fi. This one does none of that.
- 📦 Pre-calibrated profiles for the most popular kits - scan in seconds, no setup
- 🎨 Calibrate your own kit once - works with any brand, reusable forever
- ✈️ 100% offline - no Wi-Fi, no subscription, no data sent anywhere
- 📋 Results logged automatically the moment you scan
You bought the strips. You shouldn’t need a subscription to read them.
See the strip scanner →
Fix My Tank
Scan your setup and build a 7-day plan aimed at what looks wrong - nitrite spike, stalled cycle, fighting, algae, that sort of thing.
- 📌 Day-by-day checklist - no vague “do more water changes” hand-waving
- ✅ Check tasks off as you go - proof you followed through
- 📸 After day 7, take another snapshot so you can compare photos properly
Short plan, clear tasks, then look at what actually changed.
See Fix My Tank →
Aquascape Your Tank
Snap a photo of the scape you have today. We paint a clear “what if” - layout ideas, plant roles, hardscape tweaks - so you can dream on purpose, not scroll forever.
- 🪴 Concrete inspiration tied to your actual tank - not generic Pinterest noise
- 📓 Save the vision to your ledger when one sticks - your next project, documented
- 🔨 When you’re ready, you’ve already got a north star for the rescape
Cycle Companion
Stuck wondering if you’re cycled? Walk a guided path with clear tests, timing, and plain-English milestones - so you add fish when the biology is ready, not when the calendar says so.
- 🧪 Know which readings matter this week - and which ones you can ignore
- ⏱️ Avoid the classic “almost cycled” trap that wipes a first tank
- ✅ Graduate with confidence: you’ll feel it in the data, not a guess
Scan. Simulate. Decide.
Scan a fish or search by name - get an instant simulation of its impact on your specific tank. All the questions answered before you make the call.
- ⚖️ Exact bioload impact on your current stocking and filtration
- 🌡️ pH and temperature compatibility checked against every fish already in your tank
- ⚔️ Aggression and territory conflicts flagged before they happen
- 📐 Space and swim zone analysis - will your tank actually fit this fish?
No more buying a fish and hoping for the best. Simulate first, decide with confidence.
See the simulator →
Fish Compatibility Checker
Know if fish will get along before they share a tank. Group sizes, swim zones, and temperament - checked instantly.
Check compatibility →
Aquarium Log & Water Tracking
Add readings manually in seconds, or let the strip scanner do it automatically - point, scan, done. Your log builds itself.
- 🧫 Track ammonia, nitrite, nitrate, pH, temperature, and more - every test stored automatically
- 📷 Strip scanner reads your test strip in one photo and logs the values instantly
- 📊 History and trend charts so you see what’s changing before it becomes a problem
We track what actually matters for the majority of fishkeepers - hitting the sweet spot between depth, ease, and time. Enough to keep your tank safe. Not so much it becomes a chore.
See the water log →
Caretaker - Personalised to Your Tank
Reminders and schedules built around your actual setup - tank size, species, equipment. The right tasks, at the right time, every time.
See the Caretaker →
Equipment & Supplies Tracker
Know when to replace filter media, order supplies, and service equipment - before it becomes a problem.
See equipment tracking →
Extensive Fish and Plant Library
Fish and plants together: care, compatibility, parameters, and growth - searchable in one place so you stock with intent.
Browse freshwater species on the web →
New to fishkeeping? Start here
Plan before you buy - read our fishkeeping guides, skim the species guide hub, and sanity-check combos in the free aquarium stocking calculator.
How to set up a fish tank
Step-by-step: tank, filter, cycle, then fish.
How to cycle a fish tank
Don’t skip this - your fish will thank you.
First tank: why bigger can be easier
Stability beats a tiny bowl every time.
Track water parameters
What to test, how often, and how to spot trouble.
Freshwater species guide
Care context for popular aquarium fish - pairs with calculators and guides.
Identify and fix algae
Start with the aquarium algae identification hub, then drill into black beard algae, blue-green cyanobacteria, and green water blooms. Tie fixes back to parameter testing and honest stocking via the calculator below.
Free stocking calculators
Plan tank stocking with bioload, compatibility, and pH/temp checks. No sign-up required. How to use. Tank size calculator. Browse the freshwater species guide hub.
Our Users
What aquarists are saying about App-aquatic.
Love this app - it’s just what I needed! It was really quick to set up and the water testing is handy; it’s such a simple but useful idea and I will go back to it over and over. Thanks!- Louise Stefanie · May 2026
On day 5 of the ‘fix my tank’ flow - so far so good and starting to see good improvement. The water tester is also fantastic and had my test kit already loaded in the app.- Family Tudisco · Apr 2026
Great app for keeping an eye on your tank activity and monitoring major milestones like when you change your stocking levels. Helpful notification features to ensure you don’t miss key routine tasks. I haven’t used all the AI features yet but can see it will be very helpful for managing future tanks, ensuring I get the right mix of fish and that filter strength and bioload are appropriate. Good to see this on the market for us fish enthusiasts.- James Godfrey · Apr 2026
Love the new look and feel. The plant scanning has been really useful for me.- Kelsea Lindsey · Apr 2026
Ottima app, facilissima da usare.
- For D · Apr 2026
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
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Start managing your aquarium today
Download App-aquatic and keep your fish thriving.