Tetra Aquatics 4+

For fishkeepers

Tetra GmbH

Designed for iPad

    • 1.6 • 123 Ratings
    • Free



The world of Aquatic products and solutions to make fishkeeping easy in one single app! Welcome to Tetra Aquatics; your go-to tool for maintaining your aquarium or garden pond. Discover the helpful features for water testing, finding the perfect aquarium with our augmented reality and never miss a filter change with our handy reminder service.

• Analysis of the most important water parameters
• Save your measurement results in your personal test history
• No additional colour scale necessary
• Compatible with all tetra strips and liquid tests
• Detailed diagnosis and recommended problem solving actions

• Project virtual aquariums directly into your living environment
• Combine many different aquariums and base cabinets
• Get detailed information about all aquariums and buy online

• Never forget to change your filter cartridge again
• Activate the timer with a touch and let e-mails remind you to change your filter cartridge

• With the export function you can also save your water values locally.

What’s New

Version 6.0.0

Bug fixes and performance improvements.

Ratings and Reviews

1.6 out of 5
123 Ratings

123 Ratings

Wrad 1 ,

Nice idea, frustrating presentation

Generally I’m pleased with the digital reading of the tests and the results seem to match manually checked tests, so all good on that front. The results are displayed nicely for individual tests as well, with the green yellow and red value bars nicely showing the optimum ranges. Unfortunately the my water values page, where multiple tests are tracked over time is a frustrating mess. The traffic light page is ok, but there is no way to switch to showing all the actual values of the tests at the same time. You can only click on a single test at a time to see the measured value so comparing results other than by tragic light colour is impossible. The graphed results page is a complete waste of time though and fails entirely to be useful. The graphs show only the traffic light colour not the value measured. So if your ammonia goes from the bottom of the ok range to the top, the graph shows no change! Secondly the order on the graph is upside down, so a drop in levels looks like a raised value on the graph. This feature is rely poorly implemented and is the only reason to use the app.

Helen on Wirral ,


Since installing the update to the app, I have been unable to use it. I want to use the test strips.

Firstly it tells me in German to give permission for the app to use the camera. This then opens settings. When looking under privacy, camera the option to allow the camera access within the Tetra app is not an option.

The app is also telling me I am not connected to the Internet, when I clearly am because every other app or Safari has no problems.

RobHind ,

Good overall, suggested improvements

I like the app generally, I struggle with visual colour comparisons and this does that for you, though I think the better the lighting the better the app test. The CO2 test I assume isn’t part of the 6 in 1 test or it doesn’t work properly, normally says at max 20 setting which had me panicking but does sometime give readings? My tank has tons of agitation and new air pump, bought before I realised but no difference ☹️. On iPad the save option is off the bottom of screen and I keep forgetting. Charts are great idea but limited to last four readings, would be good to have long term readings for trends, especially when first cycling the tank and doing multiple tests per day/week. Having all test types on one chart with different line colours would also be good. Option to retake pic would also be good rather than starting again when you click and camera goes out of focus.

App Privacy

The developer, Tetra GmbH, 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 Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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