Comparison

Pool Water Calculator vs iopool

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pool Water Calculator

This app helps you precisely balance and maintain your pool or spa water chemistry. It offers a chemistry calculator, pool volume measurement, and detailed data logging with visual trend analysis. Get tailored recommendations and manage multiple water profiles with ease.

Highlights
  • Chemistry calculator for precise chemical dosages
  • Pool volume calculator
  • Data logging for test results and additions
  • Visual trend graphs for water chemistry
  • Personalized chemical recommendations
  • Manage multiple pool/spa profiles
  • Broad chemical support
Features
Currently charting
Read full description

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.

About

iopool

This app helps pool owners manage their water treatment with continuous analysis from a smart probe. It provides step-by-step guidance for product additions and intelligent recommendations for maintenance, eliminating the need for manual inventory checks.

Highlights
  • Continuous water analysis
  • Automated product addition notifications
  • Step-by-step treatment guidance
  • Intelligent maintenance recommendations
  • Product inventory and quantity management
  • Pool health monitoring
Features
Read full description

The iopool application allows pool owners to manage their water treatment themselves. The EcO probe analyzes the water continuously and the application displays the results of the analyses. When an addition of products is necessary, the user is notified. The application explains step by step the steps to follow for optimal efficiency and safety. Thanks to iopool's intelligent recommendation engine and its application, users no longer need to worry about managing inventory and quantity of maintenance products. These products have been selected by iopool for their efficiency, in partnership with a university research center. The iopool application is the best companion for users of a private pool. The application makes it possible to know at any time the state of health of the pool, forgetting the chore of weekly strips.

Screenshots

Pool Water Calculator4 screens
iopool4 screens

Verdict

The call

The clearest difference is price: iopool at Free against Pool Water Calculator's $4.99. Pool Water Calculator's advantage is ads (none vs shown) and rating (4.6 vs 4.3). On ratings volume, update cadence, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

iopool is free to download; Pool Water Calculator costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Pool Water Calculator holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 95 and 95 respectively. Written reviews point the same way: 77% of Pool Water Calculator's written reviews are positive against 60% of iopool's.

UpkeepUpdate frequency

Pool Water Calculator ships an update fortnightly, iopool every 2 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 4 level
Pool Water Calculator versus iopool: the parameters behind the verdict, then further details
ParameterPool Water Calculatoriopool
Price$4.99Free — better
Rating4.6 (95 ratings) — better4.3 (95 ratings)
Positive reviews76.7% of reviews — better60.0% of reviews
Number of ratings9595
Update frequencyFortnightly — betterEvery 2 weeks
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
Best chart rank#194 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size30 MB78 MB
Age rating4+4+
DeveloperIngenio Productions LLCIopool

Customer experience

Pool Water Calculator

All ratings94 ratings
Positive90.4%
Neutral4.3%
Negative5.3%
Written reviews30 reviews
Positive76.7%
Neutral6.7%
Negative16.7%

iopool

All ratings90 ratings
Positive85.6%
Neutral4.4%
Negative10.0%
Written reviews25 reviews
Positive60.0%
Neutral8.0%
Negative32.0%

In-app purchases

None

Pool Water Calculator

No in-app purchases

None

iopool

No in-app purchases

Questions

Is Pool Water Calculator free?
Pool Water Calculator costs $4.99, with no in-app purchases.
Is iopool free?
iopool is free to download, with no in-app purchases.
Which has better reviews, Pool Water Calculator or iopool?
Pool Water Calculator is rated higher. Pool Water Calculator averages 4.6 out of 5 from 95 ratings, while iopool averages 4.3 from 95 ratings.
Do Pool Water Calculator or iopool have ads?
iopool shows ads; Pool Water Calculator does not.
Which is updated more often, Pool Water Calculator or iopool?
Pool Water Calculator ships an update fortnightly, and iopool every 2 weeks. Most recently, Pool Water Calculator was updated on October 29, 2026 and iopool on October 24, 2026.

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