Best Swimming Pool Calculator Apps

249+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated November 2026

Orenda is the household name in swimming pool calculator, but it's far from the only option. We track 249+ alternatives and competitors on iOS โ€” many free, many higher-rated than you'd expect.

Compare top Swimming Pool Calculator Apps (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1OrendaOrendaFree4.7โ˜… (478)NoNoOct 2026
2Clorox PoolClorox PoolFree4.6โ˜… (29K)YesNoNov 2026
3Leslie's - Pool CareLeslie's - Pool CareFree4.6โ˜… (14K)NoNoNov 2026
4Pool Math CalculatorPool Math CalculatorFree4.8โ˜… (43)NoYesOct 2026
5Pool Time ClearPool Expertโ„ขPool Time ClearPool Expertโ„ขFree4.7โ˜… (5.6K)NoNoNov 2026
6Pool Math by TroubleFreePoolPool Math by TroubleFreePoolFree3.6โ˜… (287)NoYesOct 2026
7Pool Care by Swim UniversityPool Care by Swim UniversityFree4.6โ˜… (231)NoYesNov 2026
8Pool Chem CalculatorPool Chem CalculatorFree4.4โ˜… (42)YesYesNov 2026

Top Picks for Swimming Pool Calculator

Orenda#1

Orenda by Hasa Inc.

Pool Calculator and Education
Editor's Choice
๐Ÿ“Š Productivity
4.7๐Ÿ˜Š(478 ratings)
Free
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This app helps you master pool chemistry by accurately calculating chemical dosages and balancing water based on the LSI. It offers a user-friendly experience for both novices and professionals, including a volume estimator and educational videos.

What We Love

  • ๐Ÿš€ Easy to use
  • ๐Ÿ’ก Helpful for pool maintenance
  • ๐Ÿš€ Simplifies pool chemistry
  • ๐Ÿ‘ Provides valuable information
  • ๐Ÿ‘ Great educational resources
  • ๐Ÿ‘ Useful app for pool professionals

Room to Improve

  • ๐Ÿ› Issues with updating desired levels
  • ๐Ÿ› Metric system not working properly
  • ๐Ÿ› Difficult to input readings
  • ๐Ÿ› Lack of history/logging functionality
Clorox Pool#2

Clorox Pool by BioLab, Inc.

Simple, smart pool maintenance
Strong Contender
๐ŸŒŸ Lifestyle
4.6๐Ÿ˜ž(29K ratings)
FreeAds
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This app helps DIY pool owners maintain their pools with expert water test analysis and personalized product recommendations. It offers troubleshooting for common pool problems and allows users to shop for recommended products online.

What We Love

  • ๐Ÿš€ Easy to use
  • ๐Ÿ‘ Helpful for pool maintenance
  • ๐Ÿ’ก Provides chemical recommendations
  • ๐Ÿš€ Scanning test strips is convenient

Room to Improve

  • ๐Ÿ› Inaccurate test results
  • ๐Ÿ”’ Requires account creation
  • ๐Ÿ› Frequent login issues
  • ๐Ÿ› Inconsistent app performance
  • ๐Ÿ’ฐ Pushes Clorox products
4.6๐Ÿ˜ž(14K ratings)
Free
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Manage your pool and spa maintenance with ease. Get personalized water treatment plans, track your water test history, and access exclusive member deals. Shop for supplies and find local stores effortlessly.

What We Love

  • ๐Ÿš€ Works well with AccuBlue home test
  • ๐Ÿ‘ Convenient for tracking pool testing
  • ๐Ÿ’ก Helpful for new pool owners
  • ๐Ÿš€ Useful features like rewards and notifications

Room to Improve

  • ๐Ÿ› Buggy app with frequent crashes
  • ๐Ÿ› Login and authentication issues
  • ๐Ÿ› Slow performance and loading times
  • ๐Ÿ› Unreliable water test results and recommendations
  • ๐Ÿ› Lack of syncing between app and website
  • ๐Ÿ› Difficult to use and navigate

More Swimming Pool Calculator apps to explore

FAQ about Swimming Pool Calculator

What are the best swimming pool calculator apps for iPhone?
Orenda tops our swimming pool calculator apps ranking as of November 2026, with a 4.7-star average from 478 App Store ratings, and it's free to download.
Yes โ€” 20 of the top swimming pool calculator apps we rank are free to download, including Orenda and Clorox Pool.
Orenda has no ads and has no in-app purchases, according to its App Store listing as of November 2026.
We track 249+ swimming pool calculator apps on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.