Aqualizer – Aquarium-App

Aqualizer shows you whether your water values suit your tank and your animals, checks new stock for compatibility, reminds you of maintenance and, if you like, explains with AI what to do next.

Free, no ad banners, no account needed. Your data stays on your device.

WATER VALUES THAT FIT YOUR TANK • All common values: pH, GH, KH, nitrite, nitrate, ammonium, phosphate, iron, CO₂, conductivity and more • Target ranges by tank type, matched against what your animals need • The stability ring shows at a glance how your tank is doing and tells you why something doesn't fit • History and advice for every value outside its target range

"UP NEXT" INSTEAD OF SEARCHING Cycling phase, high nitrite, no recent test, CO₂ bottle running low: Aqualizer shows at the top of the tank what matters right now and takes you straight to the right tool.

STOCK WITH COMPATIBILITY CHECK • More than 200 verified animal species and many aquarium plants • When you add stock, the app checks water values, minimum tank size, group size, predators, territorial behaviour and stocking density • You always see the reasons, for free • "What else fits?": suggestions for animals and plants that suit your water and stock

CARE, REMINDERS, LOGBOOK • Water changes, filter, testing, pH electrode: reminders with notifications at your chosen time • The logbook records every test, water change and stock change, plus notes and photos • Weekly overview every Sunday

EVERYDAY TOOLS • CO₂ bottle: remaining time from your own history, bubble calculator • RO mixing calculator for the right hardness at every water change • Cycling assistant with certificate • Place plants in the top view, plan a new tank with the planning assistant

AI THAT STICKS TO THE FACTS First the app rates your values and stock by fixed rules. The AI only explains and prioritises what the check found, and it may never judge more mildly than the app. All AI features are optional. • AI tank analysis: the overall picture of your tank with steps for today, this week and when you have time • AI stock advisor: ask your question in your own words • Algae, treatment and plant doctor assistants, with a photo if you like You start with 50 credits and get new ones every month. If a request fails, you get your credits back.

COMMUNITY Share your tank via link, get inspired by the "Tank of the day" and contribute photos to the species catalogue. All optional, nothing is preselected.

YOUR DATA, YOUR PACE • Without an account: everything stays on your device, a demo tank to try things out is included • With a free account: automatic backup, more credits every month • With Pro: sync between phone, tablet and browser, insights, costs, planning and 100 AI credits a month

ACCESSIBLE Colour is never used alone: every traffic light also has a symbol. The app supports screen readers and large text.

Questions or wishes? Use the feedback in the app, we read everything.

Discovery signals