About Pool Water Calculator
Pool Water Calculator is an all-in-one pool and spa management suite, providing everything you need to quickly balance and maintain pool and spa water chemistry. Quickly Balance and Maintain Your Pool Chemistry Chemistry...
Pool Water Calculator is an all-in-one pool and spa management suite, providing everything you need to quickly balance and maintain pool and spa water chemistry. Quickly Balance and Maintain Your Pool Chemistry Chemistry Calculator - Enter current levels and instantly see precise chemical dosages for nearly any concentration (1% to 100%) using our advanced pool calculator. Pool Volume Calculator - Find the exact volume of your pool, hot tub, or Jacuzzi, ensuring accurate chemical dosing every time. Track and Visualize Your Water Chemistry Data Logging - Easily save and edit water test results, chemical additions, and maintenance events. Flexible Tracking - Record multiple parameters, including pH, free, combined, and total chlorine, bromine, total alkalinity, calcium hardness, CYA, borate, ORP, salt, TDS, nitrate, phosphate, water temperature, CSI, LSI, and turbidity. Reactive Graphs - Spot trends, identify issues early, and keep your water chemistry on target with visual insights. Customized to Your Unique Pool or Spa Tailored Recommendations - Enter your liner type and water profile to get personalized targets for your pool or jacuzzi. Multiple Profiles - Manage up to five different pools or spas, each with unique chemical levels, treatments, and notes. Dosing Guide - Understand each parameter’s role in pool chemistry, plus usage tips for the most common pool chemicals. Broad Chemical Support Balance your pool or spa with a wide range of standard and customizable chemicals, including: - Disinfection & Chlorine Options (Calcium Hypochlorite, Sodium Hypochlorite/Bleach, Dichlor, Trichlor, Lithium Hypochlorite, Bromine Granules) - pH Adjusters (Sodium Carbonate, Hydrochloric/Muriatic Acid, Sulfuric Acid, Sodium Hydroxide, Sodium Bisulfate/Dry Acid, Sodium Thiosulfate) - Alkalinity & Hardness (Sodium Bicarbonate/Baking Soda, Sodium Carbonate/Washing Soda, Calcium Chloride, Calcium Chloride Dihydrate) - Stabilizers & Specialty Chemicals (Cyanuric Acid, Pool Salt, Borax Tetrahydrate, Borax Pentahydrate, Boric Acid, Boron Sodium Oxide Tetrahydrate, PR-10,000) Seamless Backups and Multi-Language Support iCloud Integration - Safely back up and restore profiles, water test history, and settings. Metric & U.S. Units - Switch between units for total flexibility. Language Support - Available in English, Spanish, and French. Stop second-guessing your pool chemistry. Download Pool Water Calculator today for stress-free pool and spa management with accurate dosing, precise water balancing, and insightful tracking-all in one intuitive app.
Version History We made enhancements to the app's interface and accessibility to support larger system font settings, and resolved an issue with recalculating saturation indices. 3.0.4 02/10/2025 We improved error handling and simplified the import/export backup feature. 3.0.1 01/30/2025 We've refreshed and updated app components and features, and made significant performance and security enhancements. 3.0 01/25/2025 We added the ability to track chemical additions by count, and improved app performance. 2.6 11/08/2024 Now you can completely customize your water profile and pool chemistry preferences. Define your ideal parameter concentrations and ranges, and personalize treatment chemicals and strengths for each pool or spa. We've also expanded the list of treatment parameters, water profile presets, and app customization features including a light/dark mode and high-contrast color mode. We also made some behind the scenes changes to fix performance and resolve bugs. 2.22 04/01/2023 Now you can completely customize your water profile and pool chemistry preferences. Define your ideal parameter concentrations and ranges, and personalize treatment chemicals and strengths for each pool or spa. We've also expanded the list of treatment parameters, water profile presets, and app customization features including a light/dark mode and high-contrast color mode. 2.20 03/22/2023 We upgraded our analytical graphs to significantly improve speed and performance. We also added the ability to change the current pool or spa from each page. 2.15 05/24/2022 We added a number of new features including: - Full keyboard mode to extend decimal functionality for regions using comma separated decimals - High contrast mode and accessibility enhancements - Ability to modify the text of existing maintenance items We also fixed some conversion and unit calculations, updated placeholder and icon colors for improved visibility, and upgraded support for iCloud storage. 2.14 04/23/2022 We added the ability to modify existing chemical additions when creating or updating a datapoint. We also added the ability to lock target values from within the settings menu, and fixed an issue that was causing historical data and settings to not appear when launching the app. 2.13.1 02/27/2022 We added the ability to modify existing chemical additions when creating or updating a datapoint. We also added the ability to lock target values from within the settings menu. 2.13 02/25/2022 You can now maintain up to five pools or spas! We also added the ability to create and restore manual backups to transfer data across devices, enhanced the graphing features, improved calculation accuracy in some scenarios, and fixed an issue with the placeholder feature. 2.12 02/16/2022 We made a small change to the LSI algorithm and a few behind the scenes updates. 2.11.1 09/30/2021 Pool Water Calculator now supports calculating and saving Bromine dosages, as well as tracking and graphing Bromine concentrations for your pool or spa. Save and customize water clarity observations when creating or modifying datapoints. We also added the ability to change volume units to cups/tablespoons, and personalize your temperature unit preference. We also fixed an issue with the last value placeholder feature, added an error reporting feature, and made a number of performance enhancements. 2.11.0 08/29/2021 We made some behind-the-scenes improvements to the previous placeholder feature and the water history page. 2.10.0 07/02/2021 We made some minor enhancements to the water history page, and fixed an issue with the placeholder feature. 2.9.1 06/25/2021 We made some improvements to the water guidance and data export features. 2.9.0 06/20/2021 We've added the ability to calculate, graph, and track Calcium Saturation Index. We've also updated the dosing guide and enhanced some features. 2.8.0 06/06/2021 Balance your pool like a pro using nearly any standard pool chemical or strength. Customize the chemical strengths (1 to 100%) to find dosing information using the exact strength you need. Save or share your entire water chemistry and maintenance history from the Water History page using the new export feature. We've also added the ability to use previously recorded values as placeholders to save time and enable calculating LSI without logging new datapoints. We added a freeform notes section for each pool/spa, and added guided notes for calculated LSI values. We've also added a number of accessibility, functional, and visual improvements. 2.7.0 05/26/2021 We've completely redesigned our pH chemistry algorithms, utilizing concentrations of total alkalinity, borates, cyanuric acid, and even temperature to provide more accurate dosing calculations tailored to your water profile. 2.6.0 04/29/2021 You can now track and graph ORP and copper concentrations for ionized pools, as well as TDS, nitrates, and phosphates. You can also change your preferred language to Spanish or French within the app settings menu. The LSI calculator now utilizes CYA and saltwater concentrations when calculating your water's saturation index. We also added the ability to expand/collapse parameters in the Dosing Guide to make navigating easier. 2.5.1 04/13/2021 You can now track and graph concentrations for copper (for ionized pools), total dissolved solids, nitrates, and phosphates. You can also change your preferred language to Spanish or French within the app settings menu. The LSI calculator now utilizes CYA and saltwater concentrations when calculating your water's saturation index. 2.5.0 04/10/2021 We made a ton of great improvements based on your feedback and suggestions! You can now save water chemistry, dosing, and maintenance history for up to three unique pools or spas. Pools/spas can now be named and managed independently using the new pool management menu. iCloud support has been added, enabling you to save and restore from online backups of your water history and preferences across multiple devices. Pool Water Calculator is also now available for use on new compatible macOS devices that integrate Apple silicon. The App Settings menu has been redesigned with a suite of new options including updating graph preferences and customizing the list of water quality parameters displayed on the Chemistry Calculator (hidden parameters are still easily accessible when saving/modifying a datapoint). Graphs can now be modified to display time-scaled data (or evenly spaced datapoints) and data gaps (or normalized to connect missed datapoints). We added functionality to track and calculate dosages for Borate and boron products, added free chlorine dosing calculations for Trichlor, Dichlor, and Lithium Hypochlorite, and added 31% Muriatic Acid dosing calculations for both pH and Total Alkalinity. We added the ability to track and graph Total and Combined Chlorine concentrations and ORP (mV) within your water history. We upgraded the dosing guide to calculate free chlorine targets for regular maintenance, SLAM, and treating mustard algae. We've also made a number of UI improvements and performance enhancements, as well as upgrading support for devices running iOS 14. 2.4.0 01/01/2021 Our brand new pool maintenance suite enables you to record chemical additions and maintenance items in addition to saving your water data. Add predefined or custom chemical additions, save personalized maintenance tasks to reuse later, modify chemical additions you may have missed on previous sampling events, or even change the date/time for events in your sampling history. We also made improvements to the dosing guide and volume calculator, as well as decimal keyboard support. 2.3.0 07/09/2020 Did you know that the effectiveness of chlorine is reduced to just 30% when pool water pH rises to 7.8? Or that attempting to shock a pool with an improperly balanced stabilizer level can increase chlorine requirements by over 500%? Take the guess work out of choosing your chemical dosages and targets! We've added a brand new feature to help you determine the optimal chemical targets and ranges based on your pool type and current water chemistry. Now you can visualize your pool chemistry in relation to the recommended chemical targets, while the new guidance items let you know if you're in range or need to take action before problems occur. Additionally we've made improvements to our pH dosing calculations, increasing the potential dosing range by over 70%! We've also added a Notes section that's now included when saving a datapoint, as well as support and review links within app settings. 2.2.2 06/28/2020 Pool Water Calculator now enables you to save and track your water chemistry over time! We've added an array of beautiful and responsive graphs to make maintaining your pool even easier. 2.1.0 06/16/2020
Previous Versions
Here you can find the changelog of Pool Water Calculator since it was posted on our website on 2021-10-05 17:39:02.
The latest version is 3.0.4 and it was updated on 2026-10-14 17:43:13. See below the changes in each version.
Pool Water Calculator version 3.0.4
Updated At: 2026-10-14
Changes: Version History We made enhancements to the app's interface and accessibility to support larger system font settings, and resolved an issue with recalculating saturation indices. 3.0.4 02/10/2025 We improved error handling and simplified the import/export backup feature. 3.0.1 01/30/2025 We've refreshed and updated app components and features, and made significant performance and security enhancements. 3.0 01/25/2025 We added the ability to track chemical additions by count, and improved app performance. 2.6 11/08/2024 Now you can completely customize your water profile and pool chemistry preferences. Define your ideal parameter concentrations and ranges, and personalize treatment chemicals and strengths for each pool or spa. We've also expanded the list of treatment parameters, water profile presets, and app customization features including a light/dark mode and high-contrast color mode. We also made some behind the scenes changes to fix performance and resolve bugs. 2.22 04/01/2023 Now you can completely customize your water profile and pool chemistry preferences. Define your ideal parameter concentrations and ranges, and personalize treatment chemicals and strengths for each pool or spa. We've also expanded the list of treatment parameters, water profile presets, and app customization features including a light/dark mode and high-contrast color mode. 2.20 03/22/2023 We upgraded our analytical graphs to significantly improve speed and performance. We also added the ability to change the current pool or spa from each page. 2.15 05/24/2022 We added a number of new features including:
- Full keyboard mode to extend decimal functionality for regions using comma separated decimals
- High contrast mode and accessibility enhancements
- Ability to modify the text of existing maintenance items
We also fixed some conversion and unit calculations, updated placeholder and icon colors for improved visibility, and upgraded support for iCloud storage. 2.14 04/23/2022 We added the ability to modify existing chemical additions when creating or updating a datapoint. We also added the ability to lock target values from within the settings menu, and fixed an issue that was causing historical data and settings to not appear when launching the app. 2.13.1 02/27/2022 We added the ability to modify existing chemical additions when creating or updating a datapoint. We also added the ability to lock target values from within the settings menu. 2.13 02/25/2022 You can now maintain up to five pools or spas! We also added the ability to create and restore manual backups to transfer data across devices, enhanced the graphing features, improved calculation accuracy in some scenarios, and fixed an issue with the placeholder feature. 2.12 02/16/2022 We made a small change to the LSI algorithm and a few behind the scenes updates. 2.11.1 09/30/2021 Pool Water Calculator now supports calculating and saving Bromine dosages, as well as tracking and graphing Bromine concentrations for your pool or spa.
Save and customize water clarity observations when creating or modifying datapoints.
We also added the ability to change volume units to cups/tablespoons, and personalize your temperature unit preference.
We also fixed an issue with the last value placeholder feature, added an error reporting feature, and made a number of performance enhancements. 2.11.0 08/29/2021 We made some behind-the-scenes improvements to the previous placeholder feature and the water history page. 2.10.0 07/02/2021 We made some minor enhancements to the water history page, and fixed an issue with the placeholder feature. 2.9.1 06/25/2021 We made some improvements to the water guidance and data export features. 2.9.0 06/20/2021 We've added the ability to calculate, graph, and track Calcium Saturation Index. We've also updated the dosing guide and enhanced some features. 2.8.0 06/06/2021 Balance your pool like a pro using nearly any standard pool chemical or strength. Customize the chemical strengths (1 to 100%) to find dosing information using the exact strength you need.
Save or share your entire water chemistry and maintenance history from the Water History page using the new export feature.
We've also added the ability to use previously recorded values as placeholders to save time and enable calculating LSI without logging new datapoints.
We added a freeform notes section for each pool/spa, and added guided notes for calculated LSI values.
We've also added a number of accessibility, functional, and visual improvements. 2.7.0 05/26/2021 We've completely redesigned our pH chemistry algorithms, utilizing concentrations of total alkalinity, borates, cyanuric acid, and even temperature to provide more accurate dosing calculations tailored to your water profile. 2.6.0 04/29/2021 You can now track and graph ORP and copper concentrations for ionized pools, as well as TDS, nitrates, and phosphates.
You can also change your preferred language to Spanish or French within the app settings menu.
The LSI calculator now utilizes CYA and saltwater concentrations when calculating your water's saturation index.
We also added the ability to expand/collapse parameters in the Dosing Guide to make navigating easier. 2.5.1 04/13/2021 You can now track and graph concentrations for copper (for ionized pools), total dissolved solids, nitrates, and phosphates.
You can also change your preferred language to Spanish or French within the app settings menu.
The LSI calculator now utilizes CYA and saltwater concentrations when calculating your water's saturation index. 2.5.0 04/10/2021 We made a ton of great improvements based on your feedback and suggestions!
You can now save water chemistry, dosing, and maintenance history for up to three unique pools or spas. Pools/spas can now be named and managed independently using the new pool management menu.
iCloud support has been added, enabling you to save and restore from online backups of your water history and preferences across multiple devices. Pool Water Calculator is also now available for use on new compatible macOS devices that integrate Apple silicon.
The App Settings menu has been redesigned with a suite of new options including updating graph preferences and customizing the list of water quality parameters displayed on the Chemistry Calculator (hidden parameters are still easily accessible when saving/modifying a datapoint).
Graphs can now be modified to display time-scaled data (or evenly spaced datapoints) and data gaps (or normalized to connect missed datapoints).
We added functionality to track and calculate dosages for Borate and boron products, added free chlorine dosing calculations for Trichlor, Dichlor, and Lithium Hypochlorite, and added 31% Muriatic Acid dosing calculations for both pH and Total Alkalinity.
We added the ability to track and graph Total and Combined Chlorine concentrations and ORP (mV) within your water history.
We upgraded the dosing guide to calculate free chlorine targets for regular maintenance, SLAM, and treating mustard algae.
We've also made a number of UI improvements and performance enhancements, as well as upgrading support for devices running iOS 14. 2.4.0 01/01/2021 Our brand new pool maintenance suite enables you to record chemical additions and maintenance items in addition to saving your water data. Add predefined or custom chemical additions, save personalized maintenance tasks to reuse later, modify chemical additions you may have missed on previous sampling events, or even change the date/time for events in your sampling history.
We also made improvements to the dosing guide and volume calculator, as well as decimal keyboard support. 2.3.0 07/09/2020 Did you know that the effectiveness of chlorine is reduced to just 30% when pool water pH rises to 7.8? Or that attempting to shock a pool with an improperly balanced stabilizer level can increase chlorine requirements by over 500%? Take the guess work out of choosing your chemical dosages and targets!
We've added a brand new feature to help you determine the optimal chemical targets and ranges based on your pool type and current water chemistry. Now you can visualize your pool chemistry in relation to the recommended chemical targets, while the new guidance items let you know if you're in range or need to take action before problems occur.
Additionally we've made improvements to our pH dosing calculations, increasing the potential dosing range by over 70%! We've also added a Notes section that's now included when saving a datapoint, as well as support and review links within app settings. 2.2.2 06/28/2020 Pool Water Calculator now enables you to save and track your water chemistry over time! We've added an array of beautiful and responsive graphs to make maintaining your pool even easier. 2.1.0 06/16/2020
Pool Water Calculator version 3.0.4
Updated At: 2025-02-10
Changes: We made enhancements to the app's interface and accessibility to support larger system font settings, and resolved an issue with recalculating saturation indices.
Pool Water Calculator version 3.0.4
Updated At: 2025-02-10
Changes: Feb 10, 2025
Version 3.0.4
We made enhancements to the app's interface and accessibility to support larger system font settings, and resolved an issue with recalculating saturation indices.
Pool Water Calculator version 3.0.1
Updated At: 2025-01-30
Changes: Jan 30, 2025
Version 3.0.1
We improved error handling and simplified the import/export backup feature.
Pool Water Calculator version 2.6
Updated At: 2024-11-08
Changes: Nov 8, 2024
Version 2.6
We added the ability to track chemical additions by count, and improved app performance.
Pool Water Calculator version 2.22
Updated At: 2023-04-01
Changes: Apr 1, 2023
Version 2.22
Now you can completely customize your water profile and pool chemistry preferences. Define your ideal parameter concentrations and ranges, and personalize treatment chemicals and strengths for each pool or spa. We've also expanded the list of treatment parameters, water profile presets, and app customization features including a light/dark mode and high-contrast color mode. We also made some behind the scenes changes to fix performance and resolve bugs.
Pool Water Calculator version 2.15
Updated At: 2022-05-24
Changes: May 24, 2022 Version 2.15
We upgraded our analytical graphs to significantly improve speed and performance. We also added the ability to change the current pool or spa from each page.
Pool Water Calculator version 2.14
Updated At: 2022-04-23
Changes: Apr 23, 2022 Version 2.14
We added a number of new features including:
- Full keyboard mode to extend decimal functionality for regions using comma separated decimals
- High contrast mode and accessibility enhancements
- Ability to modify the text of existing maintenance items
We also fixed some conversion and unit calculations, updated placeholder and icon colors for improved visibility, and upgraded support for iCloud storage.
Pool Water Calculator version 2.13.1
Updated At: 2022-02-27
Changes: Feb 27, 2022 Version 2.13.1
We added the ability to modify existing chemical additions when creating or updating a datapoint. We also added the ability to lock target values from within the settings menu, and fixed an issue that was causing historical data and settings to not appear when launching the app.
Pool Water Calculator version 2.13
Updated At: 2022-02-25
Changes: Feb 25, 2022 Version 2.13
We added the ability to modify existing chemical additions when creating or updating a datapoint. We also added the ability to lock target values from within the settings menu.
Disclaimer
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