AquaCalculator for Apple Devices (iPhone, iPad and Mac)

(Of course you can also use AquaCalculator for the documentation of all other aquariums).

  • Try AquaCalculator 2 weeks for free
  • Annual license for 14,99€ required after the testing phase (*1)
  • (Cancel your subscription anytime within your Apple AppStore Settings to avoid unnecessary costs)

(*1) Detailed price depends on the country of your Apple Account 

Your AquaCalculator for Apple devices is valid for any number of your own Apple devices running: either iOS, iPad-OS or Mac-OS, as it is linked to your Apple-ID.

If you want to use AquaCalculator also for Windows or Android devices you need another license!


AquaCalculator offers its own cloud solution that connects any number of Apple, Windows and Android devices.
It stores your tank data, program settings, water values, documentation, animals and pictures.
Enter data on one device and use it on all others as well.

You have a new device and want to transfer the existing data? … no problem with aCloud


  • Document your water values in graph and table form
  • Import ICP analysis results of various labs with only 1-Click
  • Observe the development of your water values over time
  • Capture pictures and comments to document the development of your tank
  • Manage the most important data of your animals/ tank inhabitants
  • Save photos of your animals from your Media library or use the devices built in camera
  • Use the built-in calendar with reminder function for work to be done


  • Calculate the actual amount of salt needed for water changes or adjustment of the salinity of almost all available sea salt mixtures.
  • Tune the calcium, magnesium and alkalinity values of the sea salt mixtures you use with balling salts


  • Balling calculator with 2 calculation modes: “one-time adjustment” or “permanent adjustment”.

  • AquaCalculator calculates the exact dosing quantities and stock solutions for adjusting the calcium, alkalinity (KH) and magnesium concentrations
  • Whether from inexpensive salts or products of practically all aquaristic suppliers (over 100 integrated recipes)
    ATI, Aquafair, Aquaforest, Coral-Care, Fauna Marin, MicrobeLift, MT-Aquaristik, Nyos, H.W. Balling, Preis Aquaristik, A.Glaser, Red Sea, Sangokai, Tropic Marin.
  • Also self-defined recipes are supported.


  • Calculation module for “reduction” of Nutrients (nitrate /phosphate)

  • Calculation module for “addition” of  Nutrients

... and much more

  • Built-in Assistants help you manage nearly all aspects of your aquariumDirect

  • access to all AquaCalculator Compendiums/FAQs

  • Integrated mini-FAQs – Frequently asked questions explained in a few words

  • Conversion of marine aquarium metrics (e.g. salinity ↔ density ↔ conductivity)

  • Manage your settings for target water values, water treatment, technology used, etc

© 2023 AquaCalculator - All rights reserved
Martin Kuhn | +49 160 97897123
81249 Munich - Germany

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