Comparison

ICO vs Pool Math Calculator

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

Head to head
About

ICO

This application helps you maintain optimal water quality in your pool or spa. It provides personalized guidance for chemical dosing and best practices to ensure a healthier swimming experience and protect your equipment. Monitor your water quality conveniently from anywhere, anytime.

Highlights
  • Measures critical water parameters
  • Promotes healthier, cleaner water
  • Personalized chemical dosing guidance
  • Protects pool equipment
  • Provides best swimming experience
  • Accessible from anywhere, anytime
Features
Read full description

At Ondilo we know that mastering the water in a pool or spa is an art. That's why we created ICO. Constantly measuring critical water parameters, ICO promotes healthier, cleaner water, to protect pool equipment and provide best swimming experience. Proposing personalized guidance for chemical dosing and best practices to save money, protect swimmers and the environment. Accessible from anywhere, anytime, ICO provides a convenient, easy way to keep an eye on your pool water quality at all times. So that you spend more time enjoying your pool ! ICO, and it all becomes crystal-clear Find out more about ICO's functionalities on www.ondilo.com A ICO connected device is necessary to take full advantage of this application.

About

Pool Math Calculator

This app simplifies pool water chemistry by calculating precise chemical dosages for balanced water. It helps estimate the impact of adding various chemicals and determines pool volume from basic measurements. Designed for practical, everyday pool maintenance, it keeps essential information readily accessible.

Highlights
  • Chemical dosing calculations
  • Water balance targets
  • Chemical addition effect estimation
  • Pool volume calculation
  • Pool settings tracking
  • CSI target checks
Features
Read full description

Pool Calculator helps you keep pool water balanced without guesswork. Use it to calculate chemical dosing, check water balance targets, estimate the effect of adding a chemical, and calculate pool volume from basic dimensions. The app is built for day-to-day pool care and keeps the most important numbers easy to read. What you can do: - Calculate dosing for free chlorine, pH, alkalinity, calcium hardness, stabilizer, borates, and salt - See suggested free chlorine targets based on CYA - Estimate the effect of adding bleach, acid, borax, washing soda, salt, and other common pool chemicals - Calculate pool volume for rectangular, round, and oval pools - Track pool-specific settings like volume, temperature, units, and surface type - Check CSI targets for better water balance decisions Pool Calculator is designed to stay fast, practical, and easy to use whether you are managing your own backyard pool or checking numbers before treatment.

Screenshots

ICO4 screens
Pool Math Calculator4 screens

Verdict

The call

The clearest difference is rating: Pool Math Calculator at 4.8 against ICO's 3.9. ICO's advantage is in-app purchases (none vs 1) and iOS requirement (14.0 vs 18.0). On price, ratings volume, update cadence and ads 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

Both are free to download. Pool Math Calculator sells 1 one-off in-app purchase. ICO asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Pool Math Calculator holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 38 and 43 respectively.

UpkeepUpdate frequency

ICO ships an update every 5 weeks, Pool Math Calculator every 2 months. The most recent releases landed on September 26, 2026 and September 8, 2026 respectively.

Scorecard3 real differences · 7 level
ICO versus Pool Math Calculator: the parameters behind the verdict, then further details
ParameterICOPool Math Calculator
PriceFreeFree
Rating3.9 (38 ratings)4.8 (43 ratings) — better
Positive reviews45.9% of reviews—
Number of ratings3843 — better
Update frequencyEvery 5 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS14.0 — better18.0
Further details — not scored
Size78 MB4 MB
Age rating4+4+
DeveloperONDILOSergii Nesterenko

Customer experience

ICO

All ratings38 ratings
Positive73.7%
Neutral5.3%
Negative21.1%
Written reviews109 reviews
Positive45.9%
Neutral7.3%
Negative46.8%

Pool Math Calculator

All ratings43 ratings
Positive95.3%
Neutral4.7%
Negative0.0%

In-app purchases

None

ICO

No in-app purchases

1 purchases

Pool Math Calculator

One-time1
  • Unlock Pro$12.99

Questions

Is ICO free?
ICO is free to download, with no in-app purchases.
Is Pool Math Calculator free?
Pool Math Calculator is free to download, with in-app purchases available.
Which has better reviews, ICO or Pool Math Calculator?
Pool Math Calculator is rated higher. ICO averages 3.9 out of 5 from 38 ratings, while Pool Math Calculator averages 4.8 from 43 ratings.
Do ICO or Pool Math Calculator have ads?
Neither ICO nor Pool Math Calculator shows ads.
Which is updated more often, ICO or Pool Math Calculator?
ICO ships an update every 5 weeks, and Pool Math Calculator every 2 months. Most recently, ICO was updated on September 26, 2026 and Pool Math Calculator on September 8, 2026.

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