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

Test the water. Get a plan. Pool Calculator turns your test strip or drop-kit readings into clear steps: what to add, how much, in what order, and when it's safe to swim again. • A plan after every test, with how long to wait between steps • Doses in fl oz, cups, jugs and pounds, sized for your pool and the products you buy: liquid chlorine, bleach, cal-hypo, muriatic acid, soda ash, borax and more • A lifeguard flag on your pool: green, yellow or red, and a tap tells you why • Green or cloudy water? Shock doses sized for your stabilizer, and a clear sign when the algae is really gone • It remembers what you've added, so nothing gets dosed twice • Your pool in 3D: rectangle, round, oval or kidney; plaster, vinyl or fiberglass; chlorine or salt water • What if: see what an addition will do before it goes in • Water balance (CSI) to protect plaster and equipment • History with trend charts, test reminders and CSV export for your pool service • Several pools, your own targets, U.S. or metric units Chlorine targets follow your stabilizer (CYA) level, the way pool experts recommend. Your pool data stays on your device. Doses are estimates for planning: always follow the product label, add one chemical at a time, and retest before adding more.

Screenshots

ICO4 screens
Pool Math Calculator4 screens

Verdict

The call

The clearest difference is in-app purchases: ICO at none against Pool Math Calculator's 1. ICO also leads on update cadence (every 5 weeks vs every 3 months) and ratings volume (137 vs 43). Pool Math Calculator's advantage is rating (4.8 vs 4.4). On price, ads, monetization model 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

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 4.4. Both are backed by a comparable volume of ratings — 137 and 43 respectively.

UpkeepUpdate frequency

ICO ships an update every 5 weeks, Pool Math Calculator every 3 months. Both last shipped on October 20, 2026.

Scorecard5 real differences · 5 level
ICO versus Pool Math Calculator: the parameters behind the verdict, then further details
ParameterICOPool Math Calculator
PriceFreeFree
Rating4.4 (137 ratings)4.8 (43 ratings) — better
Positive reviews45.9% of reviews—
Number of ratings137 — better43
Update frequencyEvery 5 weeks — betterEvery 3 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 4.4 out of 5 from 137 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 3 months. Most recently, ICO was updated on October 20, 2026 and Pool Math Calculator on October 20, 2026.

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