AquaCalculator Downloads & RevenueAquaCalculator · App Store & Google Play
AquaCalculator by Thallos is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
🆕iOSFirst spotted by AppInsider📦iOSVersion 2026.6.11📈AndroidDropped out of every chart we track🆕AndroidFirst spotted by AppInsider📦AndroidVersion 2026-08-30-d79a484🆕AndroidReleased on Google Play🆕iOSReleased on the App Store
Full timeline · 7 events
- 🆕AquaCalculator first spotted by AppInsideriOSUnited States (found via search)
- 📦AquaCalculator version 2026.6.11iOSNew: Use Siri and Shortcuts to record water values, plan water changes and open key parts of the app more quickly.
- 📈AquaCalculator dropped out of every chart we trackAndroidLast seen 2 Oct
- 🆕AquaCalculator first spotted by AppInsiderAndroidGermany
- 📦AquaCalculator version 2026-08-30-d79a484Android- Bugfixes
- 🆕AquaCalculator released on Google PlayAndroid
- 🆕AquaCalculator released on the App StoreiOS
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
3.7 ★
12 ratings, both stores
Measured
App Store
App details
App ID
1449511522
Publisher
Michel Mohrmann
Publisher country
Germany
On the store since
Feb 2019
7 years on the store
Minimum OS
iOS 18.6+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
9
NL EN FR DE IT PL ZH ES SV
Size
51 MB
Also listed in
Utilities
Google Play
App details
App ID
de.charlex.aquacalculator
Publisher
Alexander Karkossa
Publisher country
Germany
Content rating
Everyone
AquaCalculator downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | – | – |
| Google Play | – | 10k+ Measured |
| Total | – | 10k+ Confidence |
How this is calculated
App Store: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | – | 0 of 30 countries | – | – |
| Google Play | – | 0 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 3.7 ★ | 12 |
| Google Play | 4.6 ★ | – |
| Both stores | 3.7 ★ weighted by ratings | 12 |
About AquaCalculator
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 dat
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 dat
AquaCalculator App Store
Not in any tracked top chart right now.
Updated 2 Nov 2026 · rankings refresh through the day
DeveloperThallos
CategoryProductivity
PriceFree
Released
Rating★ 3.7 (12)
Version2026.6.11
Age rating4+
First seen by us
14 Oct 2026
14 Oct 2026Rating
3.7 ★
12 ratings
Measured
AquaCalculator on the App Store
App details
App ID
1449511522
Publisher
Michel Mohrmann
Publisher country
Germany
On the store since
Feb 2019
7 years on the store
Minimum OS
iOS 18.6+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
9
NL EN FR DE IT PL ZH ES SV
Size
51 MB
Also listed in
Utilities
AquaCalculator downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
3.7 ★
12 ratings
Measured
Ratings
12
Measured
About AquaCalculator
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 dat
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 dat
Latest updates
2026.6.11
New: Use Siri and Shortcuts to record water values, plan water changes and open key parts of the app more quickly.
More from Thallos
AquaCalculator: Reef Tank Android
Not in a tracked Google Play top chart right now.
Updated 2 Nov 2026 · rankings refresh through the day
DeveloperAlexander Karkossa
CategoryTools
PriceFree
Released
Installs10k+
Rating★ 4.6 (0)
Updated
Content ratingEveryone
Rating
4.6 ★
0 ratings
Measured
AquaCalculator: Reef Tank on Google Play
App details
App ID
de.charlex.aquacalculator
Publisher
Alexander Karkossa
Publisher country
Germany
Content rating
Everyone
AquaCalculator: Reef Tank downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Google Play shows an exact lifetime install count; downloads per day are its daily change (measured). When Play hasn't refreshed the count, they come from new ratings and Top Free chart positions. Confidence is the chance the real number is within half to double ours.
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Not in a Google Play top chart right now. | ||
Ratings
Google Play, worldwide.
Rating
4.6 ★
0 ratings
Measured
Ratings
0
Measured
About AquaCalculator: Reef Tank
The documentation and management app for your aquarium. The focus is on
saltwater tanks, but your freshwater tank can be documented with
AquaCalculator just as well.
AquaCalculator requires a valid subscription. Without one you can read
your data, but not change it.
The reference software for every committed saltwater aquarist:
• Manage several aquariums in parallel.
• Document water parameters per tank, as graphs or tables. Record
measurements, write notes and store pictures — images can be commented too.
• Animal management. Assign notes and images to the animals in your tank and
see how your population develops at a glance. Categorise them as fish,
corals, anemones, invertebrates or other.
• Realistic estimates of how much salt you actually need with commercially
available sea salt mixes. How much goes into adjusting salinity, how much
into the next water change? AquaCalculator works it out from measurements we
determined ourselves for nearly every sea salt on the market.
• Increase and reduce nutrients (nitrate and phosphate).
• Calculator for adjusting calcium / alkalinity / magnesium. Expensive
special products are a thing of the past: AquaCalculator computes the dosing
quantities and stock solutions needed to set calcium, alkalinity (KH) and
magnesium with molar accuracy, using inexpensive salts. More than 120
recipes are supported, from Aquafair, Aquaforest, Coral-Care, Fauna Marin,
MT-Aquaristik, Nyos, H.W. Balling, Preis Aquaristik, A.Glaser, Red Sea,
Sangokai, Tropic Marin, Fritz ProAquatics, Two Little Fishies, Kent Marine,
Seachem, Brightwell, Continuum Aquatics and ESV — plus your own.
• Extensive settings for the measuring equipment you use and for the
chemical recipes the app applies.
• Mini-FAQ answering the key questions about dialling in your water
parameters and keeping a reef tank successfully — including Martin Kuhn's
saltwater FAQs, downloaded tens of thousands of times (water parameter FAQ,
anemone FAQ, pest FAQ 1 and 2).
Privacy policy: https://aquacalculator.charlex.de/en/privacy/
More details: https://www.aquacalculator.com/
saltwater tanks, but your freshwater tank can be documented with
AquaCalculator just as well.
AquaCalculator requires a valid subscription. Without one you can read
your data, but not change it.
The reference software for every committed saltwater aquarist:
• Manage several aquariums in parallel.
• Document water parameters per tank, as graphs or tables. Record
measurements, write notes and store pictures — images can be commented too.
• Animal management. Assign notes and images to the animals in your tank and
see how your population develops at a glance. Categorise them as fish,
corals, anemones, invertebrates or other.
• Realistic estimates of how much salt you actually need with commercially
available sea salt mixes. How much goes into adjusting salinity, how much
into the next water change? AquaCalculator works it out from measurements we
determined ourselves for nearly every sea salt on the market.
• Increase and reduce nutrients (nitrate and phosphate).
• Calculator for adjusting calcium / alkalinity / magnesium. Expensive
special products are a thing of the past: AquaCalculator computes the dosing
quantities and stock solutions needed to set calcium, alkalinity (KH) and
magnesium with molar accuracy, using inexpensive salts. More than 120
recipes are supported, from Aquafair, Aquaforest, Coral-Care, Fauna Marin,
MT-Aquaristik, Nyos, H.W. Balling, Preis Aquaristik, A.Glaser, Red Sea,
Sangokai, Tropic Marin, Fritz ProAquatics, Two Little Fishies, Kent Marine,
Seachem, Brightwell, Continuum Aquatics and ESV — plus your own.
• Extensive settings for the measuring equipment you use and for the
chemical recipes the app applies.
• Mini-FAQ answering the key questions about dialling in your water
parameters and keeping a reef tank successfully — including Martin Kuhn's
saltwater FAQs, downloaded tens of thousands of times (water parameter FAQ,
anemone FAQ, pest FAQ 1 and 2).
Privacy policy: https://aquacalculator.charlex.de/en/privacy/
More details: https://www.aquacalculator.com/
What's new in 2026-08-30-d79a484
- Bugfixes