Comparison

eXact iDip vs Pool Shark H2O Pro

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

Head to head
About

eXact iDip

This app transforms your smartphone into a powerful water testing tool. It works with a handheld photometer to provide accurate water analysis, store data, and track locations. Customize your testing with over 40 additional parameters available for purchase.

Highlights
  • Share test data via CSV
  • Seamless smartphone integration
  • Parameter information and data storage
  • GPS tracking
  • Over 40 purchasable test parameters
  • Quick and simple testing procedure
Features
Read full description

Harness the power of the smartphone AND upgrade the way you test water! Share E–mail test data via CSV file (spreadsheet) The exciting eXact iDip® Smart Photometer System® by ITS, Inc. harnesses the power of smart devices and the simplicity of design to handle the heavy lifting of complex water testing. The smart phone app is designed to work seamlessly with the waterproof handheld unit with parameter information, data storage and GPS tracking included. With guaranteed exact results in less time, our new smarter process will revolutionize water testing. The app comes with 4 tests installed including pH, Free Chlorine, Combined Chlorine (Chloramines) and Total Alkalinity. Over 40 additional parameters are available for in app purchase ($4.99/ea), so you can tailor the eXact iDip® to suit your needs at a fraction of the cost of competing multi-parameter photometers. The simple and quick testing procedure takes the guesswork out of results. It’s like having a laboratory in the palm of your hand.

About

Pool Shark H2O Pro

This app simplifies pool and spa record-keeping and maintenance with compliant logs. It offers instant water analysis and chemical dosage instructions to reduce liability and maintain clean water.

Highlights
  • Health Department Compliant Logs
  • Instant Water Analysis
  • Chemical Dosage Instructions
  • Bluetooth Integration with LaMotte WaterLink Spin Touch
  • Automated Testing Reminders
  • Location-Based Pool Search
  • Tamper-Proof Electronic Logs
Read full description

Simplify Pool and Spa record keeping and maintenance with 100% Health Department Compliant logs! Instant water analysis and chemical dosage instructions help reduce liability and keep water clean. Ideal for property managers, health clubs, hotels, water parks and resort pools and spas. Certified by the Council for the Model Aquatic Health Code as compliant with the CDC's MAHC guidelines. This app provides additional functionality to the Pool Shark H2o service.  Account or Free Trial required for login. 30 different recording options configurable by pool, including Chlorine, Bromine, pH, Alkalinity and more.. Instant dosage calculation and instructions makes it easy to keep the water clean and safe. ** Chemical Dosage Calculations - make it fast and easy to keep water clean. ** Integrates with LaMotte WaterLink Spin Touch systems through bluetooth making water chemical testing as easy as pushing a button. ** Reminders when pools need to be tested ** Smart Search - detects your location and provides details for the pool/spa closest to you, eliminating the need to search for pools. ** Notifications & Alerts keeps management and maintenance staff aware when pools need attention. ** Reduce Liability - Tamper proof electronic logs stamped with the users name, date and time, keep an accurate record for compliance and liability. ** Lower Costs - Chemical Dosage calculations done automatically for each pool saves time and money spent on excess chemicals. The patented Pool Shark H2O service supports ALL your pool logs and staff, making it fast and easy to stay in compliance with health code regulations.

Screenshots

eXact iDip4 screens
Pool Shark H2O Pro4 screens

Verdict

The call

The clearest difference is rating: Pool Shark H2O Pro at 4.8 against eXact iDip's 4.0. Pool Shark H2O Pro also leads on in-app purchases (none vs 10) and review sentiment (100% vs 67%). eXact iDip's advantage is update cadence (every 6 weeks vs every 5 months). 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. eXact iDip sells 10 one-off in-app purchases. Pool Shark H2O Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Pool Shark H2O Pro holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: Pool Shark H2O Pro has 288 ratings behind it against 56, so its average is the more settled of the two. Written reviews point the same way: 67% of eXact iDip's written reviews are positive against 100% of Pool Shark H2O Pro's.

UpkeepUpdate frequency

eXact iDip ships an update every 6 weeks, Pool Shark H2O Pro every 5 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

Scorecard6 real differences · 4 level
eXact iDip versus Pool Shark H2O Pro: the parameters behind the verdict, then further details
ParametereXact iDipPool Shark H2O Pro
PriceFreeFree
Rating4.0 (56 ratings)4.8 (288 ratings) — better
Positive reviews66.7% of reviews100.0% of reviews — better
Number of ratings56288 — better
Update frequencyEvery 6 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size41 MB4 MB
Age rating4+4+
DeveloperIndustrial Test Systems Inc.Pool Shark H2O, Inc.

Customer experience

eXact iDip

All ratings49 ratings
Positive71.4%
Neutral8.2%
Negative20.4%
Written reviews63 reviews
Positive66.7%
Neutral7.9%
Negative25.4%

Pool Shark H2O Pro

All ratings219 ratings
Positive93.2%
Neutral1.8%
Negative5.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

eXact iDip

Reported bugs

10 issues
  • Bluetooth connection problems
  • App crashes on launch or during use
  • Lost purchased tests after update
  • Results data goes missing
  • Store section not showing items
Show 5 more
  • App not working on iOS 13
  • Crashing when importing contacts
  • Cannot save tests to customer
  • Varying results from same sample
  • Hanging dialogue boxes ('configuring', 'loading algorithm')

Requested features

7 requests
  • Improve user interface and navigation
  • Allow setting customer/site once for personal use
  • Provide actual readings instead of 'LO'/'HIGH'
  • Full screen support for iPhone X and iPads
  • Better interface/integration between devices
Show 2 more
  • Option to not require GPS
  • Make test purchases more straightforward

Pool Shark H2O Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

eXact iDip

One-time10
  • Chloride CH$4.99
  • Copper CU$4.99
  • Iron, Total FE$4.99
Show 7 more
  • Nitrate, Fresh NO3$4.99
  • Phosphate PO4$4.99
  • Sulfate SO4$4.99
  • Hardness, Total High THH$4.99
  • Calcium CA$4.99
  • Smart Brew Bundle$18.99
  • 570 Marine Bundle$23.99
None

Pool Shark H2O Pro

No in-app purchases

Questions

Is eXact iDip free?
eXact iDip is free to download, with in-app purchases available.
Is Pool Shark H2O Pro free?
Pool Shark H2O Pro is free to download, with no in-app purchases.
Which has better reviews, eXact iDip or Pool Shark H2O Pro?
Pool Shark H2O Pro is rated higher. eXact iDip averages 4.0 out of 5 from 56 ratings, while Pool Shark H2O Pro averages 4.8 from 288 ratings.
Do eXact iDip or Pool Shark H2O Pro have ads?
Neither eXact iDip nor Pool Shark H2O Pro shows ads.
Which is updated more often, eXact iDip or Pool Shark H2O Pro?
eXact iDip ships an update every 6 weeks, and Pool Shark H2O Pro every 5 months. Most recently, eXact iDip was updated on November 1, 2026 and Pool Shark H2O Pro on November 6, 2026.

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