Aquarimate vs AquaCalculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Aquarimate
Manage freshwater and saltwater aquariums with this comprehensive app. Track parameters, schedule tasks, log activities, and access a vast livestock library with compatibility advice. Organize notes, expenses, and photos, with cloud backup and cross-device syncing.
- Unlimited aquarium management
- Parameter test result logging
- Customizable tank parameters
- Advanced unit converters and dosing calculators
- Husbandry task scheduling and reminders
- Comprehensive livestock library (Aquaribase)
- Photo gallery and expense tracking
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Designed to manage both Freshwater and Saltwater aquariums! Available in 13 languages: Català, Dansk, Deutsch, English, Español, Français, Italiano, Polski, Português, Română, Русский, 中文(简体), 中文(香港). Includes a very comprehensive livestock library of both Freshwater and Saltwater fish, coral, invertebrate and plant species with smart compatibility advice with your fish! Features: • Manage unlimited number of aquariums, • Record your parameter test results, • Customize parameters for each tank by adding or removing parameters to your need, • Easily convert measurements in different units and calculate the required dosing with the advanced unit converters and dosing calculators, • Use the count-down timer to perform timed tests easier, • Analyze your tank parameters along with your activities with beautiful, full-screen and touch responsive graphs, • Plot results of multiple parameters along with your husbandry activities all in one chart, • Create your husbandry tasks and set reminders for them with an advanced scheduling system, • Track your activities integrated with tasks and reminders, • Keep all your notes organized in the searchable Notes section, • Find information about your Freshwater & Saltwater livestock in Aquaribase, • Import and save your livestock information from Aquaribase for each tank, • Add your favorite livestock to the built-in wish list directly from Aquaribase, • Visually keep track of tank inhabitants with Timelines, • Analyze the progress of your livestock, along with your logged activities and test results, with Timelines, • Store your tank equipment, • Keep track of your expenses, • Create photo galleries and organize all your photos in different albums, • Backup & restore your app data wirelessly on Aquarimate Cloud, • Manage your aquariums across all devices with Aquarimate Live, • And enjoy! When it comes to maintaining our aquariums, we all want to stay organized and perform the routine husbandry tasks properly. After all, this is the key to success in maintaining any aquariums. We always keep track of tank parameters and changes in health, growth, color changes, diseases, etc., to make sure our ecosystem is healthy and thriving. In our busy life, sometimes we find it difficult to remember the progress of all the livestock in our tanks and may forget about things we have to do for our aquariums. Aquarimate is a comprehensive mobile app that is built to help all aquarists, whether hobbyist or professional, to maintain their tanks properly. Aquarimate can help you record your test results, analyze changes, visually track your livestock, setup tasks and reminders, log your activities, store your livestock and equipment, take notes, track expenses, build photo galleries and so much more.. Aquarimate includes the most comprehensive Saltwater & Freshwater livestock library called Aquaribase. You can browse or search Aquaribase to find information about your livestock, equipment, food and supplements. This database includes thousands species of fish, corals, inverts and plants as well as dry goods with pictures and information organized in categories for saltwater and freshwater aquariums. Last but not least, never worry about your app data anymore. You can backup your app data wirelessly and restore whenever you need. Aquarimate Cloud comes with 100MB Free storage in the cloud which can be upgraded to 1G of space via in-app purchase of an annual subscription for $9.99 per year. The subscription will automatically be renewed to maintain your backup in the cloud to keep your data safe and secure. This, however, is not necessary if your data size is below 100MB. Join Aquarimate Live! and manage your aquariums across all of your devices. Subscription is needed for $9.99 per year which will be automatically renewed every year. Please visit our website at http://www.aquarimate.com to get more details about the app features and read our Terms & Conditions at http://www.aquarimate.com/terms
AquaCalculator
This app helps dedicated marine aquarists manage and document their aquariums. It tracks water parameters, manages animal stock, and calculates precise salt and nutrient additions. It also offers tools for adjusting calcium, alkalinity, and magnesium levels.
- Manage multiple aquariums
- Water value documentation with graphs and tables
- Animal administration with notes and pictures
- Recurrent memory for care tasks
- Salt quantity estimation
- Nutrient and chemical adjustment calculators
- Extensive setting options
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The reference software for dedicated marine aquarists The AquaCalculator is not free. In order to be able to use the AquaCalculator permanently, you must complete a paid subscription after two weeks. In the first two weeks, the AquaCalculator can be tested for free and the subscription can be stopped at any time before it is chargeable. The app for documentation and management of your aquarium. The main focus is on saltwater aquariums but also their freshwater pools can of course be documented with the AquaCalculator. With the AquaCalculator you have the suitable manager at your fingertips to keep an eye on all important parameters regarding the care of your aquarium. A big request: unfortunately we can not respond to reviews. If you have problems with the app, please contact us via email shortly (Support). So far we could clarify every question :-) The reference software for every dedicated marine aquarist: - Manage several basins in parallel - Documentation of the water values in graph and table form per pool. You can document your water readings, take notes or deposit pictures. The pictures can also be commented on. - Animal Administration. You can also assign notes and pictures to your animals in the basin and thus get a quicker overview of the development of their stock. - Dates: Management of recurrent memories help to keep track of the care of aquariums - Realistic estimation of the required salt quantity of commercially available sea salt mixtures. How much salt is actually needed to "adjust the salt content" or for the next "water change"? AquaCalculator calculates this using self-determined measurements of almost all commercially available sea salt mixtures. - Addition of nutrients (nitrate and phosphate) - Calculator to adjust calcium / alkalinity / magnesium: Expensive special agents are passé. AquaCalculator calculates the exact dosing quantities and stock solutions required for the adjustment of calcium, alkalinity (KH) and Mg concentration of low-cost salts. Supports recipes from Aquafair, Aquaforest, Coral-Care, Fauna Marin, MT Aquaristics, Nyos, H.W. Balling, Price Aquaristics, A.Glaser, Red Sea, Sangokai, Tropic Marin, Fritz ProAquatics, Two Little Fishies, Kent Marine, Seachem, Brightwell, Continuum Aquatics, ESV and Self-Defined. - Extensive setting options for the measuring instruments used, as well as the chem. Recipes. - Mini-FAQ: answers the most important questions about adjusting the water values and thus the successful care of reef aquariums. Including ten thousand times downloaded seawater FAQs by Martin Kuhn (Water Parameter FAQ, Anemone FAQ, Plague Master FAQs 1 and 2) NOTE: We have provided iBooks from Apple for viewing the Seawater FAQs. The ad must have iBooks or another PDF viewing app installed on your device. To use the AquaCalculator you must have a valid subscription. This will enable you to take full advantage of the Aquacalculator, benefit from regular updates and enhancements, secure data storage and synchronization of your data with other devices. Without a valid subscription, you can only read but not modify your data. The term is one year. Payment will be made through your iTunes account. The subscription will automatically renew if it is not canceled 24 hours before the end of the current period. Within 24 hours before the end of the current period, the amount for the renewal will be charged. Termination of automatic renewal is possible at any time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use and Privacy: https://acalc.de/pages/impressum
Screenshots
Verdict
The clearest difference is price: AquaCalculator at Free against Aquarimate's $9.99. Aquarimate's advantage is rating (4.4 vs 3.7) and ratings volume (626 vs 12). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
AquaCalculator is free to download; Aquarimate costs $9.99 up front. Aquarimate sells 2 in-app purchases, starting at $9.99 per year and AquaCalculator sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Aquarimate holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Aquarimate has 626 ratings behind it against 12, so its average is the more settled of the two. Written reviews complicate that: 64% of Aquarimate's written reviews are positive against 67% of AquaCalculator's, so the app with the better star average is not the one people write more warmly about.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 10, 2026 and November 2, 2026 respectively.
| Parameter | Aquarimate | AquaCalculator |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.4 (626 ratings) — better | 3.7 (12 ratings) |
| Positive reviews | 64.4% of reviews | 66.7% of reviews — better |
| Number of ratings | 626 — better | 12 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad, iPod, Apple Watch | iPhone, iPad, Mac, Vision Pro |
| Requires iOS | 14.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 48 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | WiseLogic Inc | Thallos |
Customer experience
Aquarimate
AquaCalculator
Bugs and requests
Aquarimate
Reported bugs
5 issues- App crashes when accessing settings
- Water parameter data not saving correctly
- Livestock information not syncing across devices
- Calculators providing inaccurate results
- Calendar integration not working as expected
Requested features
5 requests- Ability to copy settings and data across tanks
- More advanced analytics and reporting
- Improved syncing and cross-device access
- Expanded database of aquatic species
- Customizable dashboards and views
AquaCalculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Aquarimate
- Additional 1 GB For Aquarimate Cloud Storage Service$9.991 Year
- Aquarimate Live Subscription$9.991 Year
AquaCalculator
- AquaCalculator monthly3 Days trial$3.991 Month
- AquaCalculator yearly14 Days trial$19.991 Year
- A large coffee$3.99
- Ice Tead and a Sandwich$9.99
- Something to learn$39.99









