Aqualizer – Aquarium-App
Wasserwerte, Besatz und Pflege
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Check water values and new stock before problems start. Free, no ad banners and no account needed. Your data stays on your device.
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.
Terms of Use (EULA):https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New in version 1.1:
• Light design: In Settings > App > Appearance, choose Automatic, Light or Dark.
• "What's new": After an update, Aqualizer shows once what has changed. Find the list under Settings > Help & Feedback.
The developer, Dennis Weimer, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Search History
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Dennis Weimer
- Size
- 60.1 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 16.4 or later.
- iPhone
Requires iOS 16.4 or later. - iPad
Requires iPadOS 16.4 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- Contains
Advertising
User-Generated Content
- In-App Purchases
Yes
- 60 AI credits $1.99
- Aqualizer Pro $24.99
- Aqualizer Pro $3.99
- Copyright
- © 2026 EDV-Technik Dennis Weimer
