• Aquarium Assistant 1
  • Aquarium Assistant 2

Aquarium Assistant

Whether you want to check the state of the water in the last month, the population of the creatures, or the state of the plants – you’ll find it all in one place. The application works for freshwater, saltwater, brackish and shrimp aquariums aswell.

Dashboard is displayed as the default application screen. There are recent water parameters, current and upcoming assignments and other information

Aquarium information
Allows you to view, create new and edit your aquarium data. In addition to basic data such as name and capacity of the aquarium, you will see the latest water parameters added to this tank.

Animals, Plants, Equipment
Allows you to add and track animals, plants and equipment in your aquarium with the ability to create galleries. Records can be sorted by name, scientific name or purchase date

Tasks and fertilization plans
Allows you to create and track all tasks, allowing you to view current, overdue and upcoming tasks. The application automatically recalls tasks and tasks that have not been performed.
Fertilization plans allows you to setup your fertilization dosing plan and create task list linked with this plan.

Water Parameters
Allows you to save and track multiple parameters of water separately for your aquariums. The configuration allows any parameterization of the entered data separately for each type of aquarium. It is possible to switch off the component, set the correct range, or turn on the timer.
Corelation allows you to graph three freely selected parameters in daily, monthly and weekly time periods.

Estimative index
Calculator for fertilization by Estimative Index. All settings and parameters for both Macro and Micro fertilizers can be saved to the template for later refinement.


• Manage multiple aquariums.
• Works with freshwater, marine, brackish and shrimp aquariums.
• Log water parameters and view them on graph.
• Track your Activities - add activity notes and photo.
• Unit converters
• Dosing Calculator for target water parameters
• Notes created by Estimative Index and Dosing Calculator
• Track your Expenses in predefined categories.

• Check corelation between three freely selected water parameters.
• Water parameter countdown timers.
• Easy share your water parameters.
• Track your animals, plants, equipment and create galleries for them.

• Create fertilization plans and use them to create task list.
• Manage your current, upcoming and overdue tasks..
• Backup and Restore data locally and from Google Drive.

• Estimative Index dosing calculator.
• Templates for Estimative Index macro and micro data.
• Share your Estimative Index dosing settings.

Category : Tools

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Reviews (30)

C.. A. N. Jan 9, 2022     

A very useful app for keeping track of all aspects of your aquariums. I have quite a few tanks set up and running and this app has come in very handy for helping me keep track of livestock, water parameters, and maintenance scheduling. I'm tempted to give it a 5 star rating, but there are minor details stopping me. This is mostly a user interface matter where a few things aren't quite as intuitive as they could be. Over all though, this app is brilliant. Every aquarist should be using it.

Meg. A. M. Feb 7, 2021     

NEW EDIT: *Please add backup & sync! New phone and trying to put in a years worth of 9 tanks is impossible! I have an account, what's the point if we cant use it?!?* I've had this app for a long time and I love it. Add in everything you do, you'll find it really handy down the road when looking for patterns and the like. This is also the best app for having multiple tanks. I am able to go back and see what medications or additives worked, devices, didn't work, affected the pH, etc. etc. 5⭐

r. m. Feb 12, 2021     

There is a learning curve, but the tool is powerful enough to make the effort worthwhile. Changing my review to 4.8 stars. Click the little arrow by your fish or plants to copy or move them. Developer is responsive. I wish more developers would wait to put in ads until the app was on the second version. I already paid to never see them. It would be awesome to be able to turn off or pause tasks. Perhaps tanks marked "not in use" would have their tasks paused and not show on the dashboard?

Wil. M. Oct 28, 2020     

I am setting up a new planted tank (my first one). I downloaded 6 apps, immediately rejected 2, didn't want to create an account to use a 3rd, and tried out the other 3 (incl this one). This one is the most complete for dealing with water parameters (completely customizable), maintenance tasks, and fertilizing my plants. There are some features that apparently aren't implemented yet (incl ads), but I went ahead and paid for the ad-free upgrade because I wanted to support this developer. 5 stars!

Ach. Mar 20, 2021     

Very nice app, easy to use, a very helpful tool for aquarists. If I could add a feature, it would be to have a calendar that shows all the activities past and future, with maybe customizable color coding (eg water change blue, fertilization green, adding fish red, plant pruning brown, etc). It is very useful to be able to see my past activities in a calendar type view, when I added certain live stock for example, without having to scroll all past activities. All in all, the best app.

Eri. E. Nov 11, 2018     

I love this app more than most. The tasks are easier to use, and see compared to other aquarium apps. The only thing I wish you will add is for livestock, an option to select "deceased" when a fish has passed. Maybe adding it to a different folder, or simply turning the fish's bio grey. I would love to be able to have a history of my fish currently in the tank, and previous fish. It sucks how right now you either leave it with your livestock, or have to delete the fishes bio all together. INCLUDE THIS, & IT WILL DEFF BE A 5 STAR APP! :)

big. b. Feb 23, 2020     

I tried every aquarium app I could find, paid and free, and this was one of the best. Great little app for keeping track of what's happening with your aquarium. I really like on the parameters graphs that you can have up to 3 different ones on the same graph. So if your cycling your tank, you can have ammonia, nitrite, and nitrate all on the same graph to easily see where your at in your cycle.

Cli. Feb 11, 2022     

I feel a 2 is harsh.. but then again, that's just related to how I use it. Currently totting up my expenses and about it really. Can't edit the sections at all so practically just a basic notepad and calculator. There are various calculators for water chemistry that some will find useful but too complicated for me and not any guidance. Some volume calculators etc , useful but prob a use once thing.. feel this started with potential but then died and not updated forever

Gil. G. May 4, 2020     

When I do multiple water tests in the same day, the charts just equally space each measurement, so three tests in a row look the same as one test every day for three days. The x axis needs time, not just date. Edit: Developer is extremely responsive to emails about functionality. I suggested a bunch of things that will be added soon. :D Very good app already, with new versions in production.

Dan. P. Dec 11, 2018     

Intent good and almost there. The task list needs work though. Reminds work, but then you can't actually click on the reminder and put in the day you did it, you can only put in the day that it is currently. You also can't see prior task and when you did them very easily.

And. B. R. Mar 12, 2020     

Probably better for someone that's seriously into data. Consider having a beginner/intermediate/expert modes. There's just too much going on to make this fun for the people that aren't data-hounds. The UI could be a bit spicier too.

Man. M. Jun 28, 2021     

Excellent App, I would add 2 features #1 cloud sync and #2 a time line with the activities and water values integrated, so I can see trends for example, water changes related to water values. Also the project seems abandoned, last update was on 2019.

Mar. T. Jan 6, 2019     

i LOVE this app. Very dynamic to my fish setup. Excellent for reminders, water changes, water tests and keeping statistics. Been using it 3 months now and very pleased with the calm organization it brings to managing my tanks and ponds.

Sam. F. Jul 9, 2020     

When I go to add a water value for my aquarium, I can only add the temperature in Celsius, it would be nice to be able to add it in Fahrenheit. So far the best aquarium app that I've tried.

Amy. M. Dec 18, 2018     

I really like that I can keep track of my fish, equipment, plants, water perameraters, costs and much more. I can get rid of ads with a small donation as well. great app!

Mar. T. Sep 29, 2018     

Great app for fish keeping enthusiasts. Create water change and regular maintenance reminders, fertilization plans, inventory livestock, plants, and equipment, track water params and nutrient balances, plus keep photos of your fish and tanks! Lots of settings to tweak, very configurable.

Cap. B. Dec 23, 2018     

so far so good. i wish the expense tab auto calculated but instead you put the price in multiple places just to get a running tally. kinda of a pain and redundant.

fxr. Jan 3, 2021     

Beginner Freshwater - I really like the layout! Simple, attractive and gives me everything I need. Schedule reminders, water parameters and trends.

Jul. O. M. May 25, 2019     

Totally amazing tool for the aquarium enthusiast. Except for the fish/plant databases is missing the app is just perfect. Would give more stars if there were 😉 Keep up the excellent work dev

Dav. W. Dec 25, 2018     

Love this app. only problem I have is I've just changed my phone and all my data hasn't transferred to new phone. contacted them and advised how to transfer the data. worked perfectly. 5 star

Sim. Oct 20, 2018     

Paid but still seeing ads? To be honest, this is one of the best aquarium app I have ever tried. It would be even better if you could add some basic fishes/plants information into the app like the other app MyAquarium does (this app also has great recommendations and suggestions to user).

Eri. E. Feb 4, 2021     

Easy, clean interface that allows for essential data recording, charting, and trend tracking. For the professional Aquarist. Enjoy the hobby by using data driven decisions for purchases and tank maintenance.

Tre. P. Feb 11, 2019     

Excellent. An overview with all your tanks on the dashboard would look very nice but overall excellent app and very detailed. Good job developer.

Eff. L. Jul 3, 2019     

This app is great. I use it all the time. My fish and I are happier. The reason it only gets 3 stars is because the database feature holds wildly inaccurate information.

Rob. D. S. Sep 18, 2018     

Awesome app. I assume that was built by someone that really envoy the hobby. Would be amazing to have a bigger database of plants and fishes. My favorite so far.

A. G. u. Jan 25, 2019     

Written by an aquarist? Seems to have everything I need and more. Well designed and very functional, Ill give it the additional star if it lives up to its promised potential when Ive used it longer. Thanks!

Unk. P. May 5, 2019     

I'm new to aqua maintenance. but this app is easy to get started on. there are some things that need improvement but by far the best of the aquarium apps

ven. m. Aug 6, 2020     

Best Aquarium management app ever in the app Store, the features are good, easy to use. The reminder features are the best. Good UI.. love it 😎😎😊😊

Ka. M. Apr 11, 2019     

this is stupendous! I have 6 tanks - 4 established and 2 cycling and just being able to instantly see parameters and trends is great. I haven't fully loaded all my data.. but I will get there. I wish I had had this on the first tank set up.

Cor. T. Dec 31, 2018     

Great app, lots of functionality and works good so far. i wish there was more content in the plant and fish encyclopedia.