Comparison

iopool vs Simple Pool

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

Head to head
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.

About

Simple Pool

This app helps you precisely test, dose, and track your pool and spa water chemistry. It offers practical dosing recommendations and tools to simplify routine maintenance for various pool types. Get accurate chemical calculations without ongoing fees.

Highlights
  • Water test logging
  • Dosing recommendations
  • Chemical tracking
  • LSI/CSI monitoring
  • Shock treatment mode
  • Test reminders
  • Chemical effects preview
Features
Read full description

Unlock crystal-clear pool water with Simple Pool - the pool chemistry calculator with no subscription, ever. One purchase, lifetime access. Simple Pool helps you test, dose, and track your pool water chemistry with precision. Get CYA-aware sanitizer targets, practical dosing recommendations, and powerful tools that make routine pool maintenance faster and easier. Whether you manage a chlorine pool, saltwater pool, bromine pool, or hot tub and spa, Simple Pool gives you accurate chemical calculations - including algae treatment dosing - every time. No more overspending at the pool store - just enter your test results and get exactly what your pool needs. What you can do: • Keep a chemical log of every addition with the unified Activity History • Log full water tests or Quick Tests in seconds • Built-in LSI calculator tracks the Langelier Saturation Index (LSI/CSI) to prevent scale and corrosion • Get dosing recommendations for chlorine, acid, total alkalinity, calcium hardness, stabilizer, and more • Set your exact chlorine concentration and acid strength for precise dosing • Use Shock Treatment mode (chlorine/saltwater pools) with progress tracking • Set recurring test reminders and shock retest reminders • Use the Chemical Effects Calculator to preview chemical changes before dosing • Track trends and test history over time with interactive charts • Haptic feedback confirms pool status at a glance • Support for chlorine, saltwater, and bromine pools • Keep visual track of how your pool is doing over time by snapping a photo during water testing • Share your pool's progress by tapping the share icon on your water test details Simple Pool Pro (one-time purchase, no subscription): • One-time purchase - no subscription, no recurring fees • Unlimited pools and spas • Full test and activity history • 90-day and all-time trend ranges • iCloud sync across Apple devices Free includes: • 1 pool • Test logging and dosing recommendations • 7-day and 30-day trends • 30 days of history Spend less time managing pool chemicals and more time enjoying your pool. Download Simple Pool and make pool care simple. Links: • Privacy Policy: https://sites.google.com/view/simple-pool-privacy-policy/home • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

iopool4 screens
Simple Pool4 screens

Verdict

The call

The clearest difference is rating: Simple Pool at 5.0 against iopool's 4.3. Simple Pool also leads on review sentiment (100% vs 60%) and ads (none vs shown). iopool's advantage is in-app purchases (none vs 1) and ratings volume (95 vs 21). On price 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. Simple Pool sells 1 one-off in-app purchase. iopool asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Simple Pool holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 95 and 21 respectively. Written reviews point the same way: 60% of iopool's written reviews are positive against 100% of Simple Pool's.

UpkeepUpdate frequency

iopool ships an update every 2 weeks, Simple Pool every 6 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard8 real differences · 2 level
iopool versus Simple Pool: the parameters behind the verdict, then further details
ParameteriopoolSimple Pool
PriceFreeFree
Rating4.3 (95 ratings)5.0 (21 ratings) — better
Positive reviews60.0% of reviews100.0% of reviews — better
Number of ratings95 — better21
Update frequencyEvery 2 weeksEvery 6 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size78 MB29 MB
Age rating4+4+
DeveloperIopoolGrey Park, LLC

Customer experience

iopool

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

Simple Pool

All ratings21 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iopool

No in-app purchases

1 purchases

Simple Pool

One-time1
  • SimplePool - Lifetime$9.99

Questions

Is iopool free?
iopool is free to download, with no in-app purchases.
Is Simple Pool free?
Simple Pool is free to download, with in-app purchases available.
Which has better reviews, iopool or Simple Pool?
Simple Pool is rated higher. iopool averages 4.3 out of 5 from 95 ratings, while Simple Pool averages 5.0 from 21 ratings.
Do iopool or Simple Pool have ads?
iopool shows ads; Simple Pool does not.
Which is updated more often, iopool or Simple Pool?
iopool ships an update every 2 weeks, and Simple Pool every 6 days. Most recently, iopool was updated on October 24, 2026 and Simple Pool on October 28, 2026.

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