Comparison

Pool Math by TroubleFreePool 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

Pool Math by TroubleFreePool

Easily manage your swimming pool's water chemistry by tracking key levels like chlorine and pH. This app calculates the precise amounts of chemicals needed to maintain clear, algae-free water, offering a cost-effective alternative to pool store advice.

Highlights
  • Chemical level calculators (pH, Chlorine, Alkalinity, etc.)
  • Track pool maintenance tasks
  • Log chemical additions
  • Weather condition tracking
  • Chemical addition effect calculations
  • Bleach price comparison
  • Data backup and export
Features
Read full description

PoolMath makes swimming pool care, maintenance and management easy by tracking chlorine, pH, alkalinity and other levels to help calculate how much salt, bleach and other chemicals to add. Keep swimming in your TroubleFreePool with Pool Math. Crystal clear algae free pool water is what Trouble Free Pool Math is committed to. Pool Math performs all the calculations you need to keep your chlorine, pH, calcium, alkalinity, and stabilizer levels balanced. Why choose Pool Math over the others? Other apps claim to make testing easy by using test strips and your phone's camera. Unfortunately, this is simply too good to be true. Test strips are notoriously inaccurate and end up costing you much more money in both chemicals and the tests themselves in the long run. Trouble Free Pool believes using a proper test kit is much easier, effective, and economical in the long run. By following these calculations the pool owner achieves and maintains crystal clear water without reliance on the often unproductive advice and unneeded expense from pool stores. Pool Math's great features include: • Calculators for pH, Free Chlorine, Calcium Hardness, Salt, Total Alkalinity, Calcium Hardness, Borates, CSI • Track Maintenance: Backwashing, Vacuuming, Filter Cleaning, Filter Pressure, SWG Cell %, Flow Rate • Track Chemical Additions • Track Weather conditions with your logs • Calculate the Effects of Adding chemicals to your pool • Bleach Price Calculator - Find the best deals on bleach easily • Summary page to see an overview of test results and chemical additions • Data backup / Export Premium Subscribers get access to these additional features: • Unlimited Test Log History Storage • Maintenance Reminders • Cloud Sync/Backup • Sync across multiple devices • Unlimited Pool / Spa Configurations • Test Log CSV Import / Export Pool Math Premium Subscription details: • Auto-renewable subscription • 1 year for $7.99 USD • Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration of 1 year) unless auto-renew is turned off at least 24 hours before the end of the current period. • Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase. • Privacy Policy & Terms of Use: http://poolmathapp.com/privacy/

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

Pool Math by TroubleFreePool4 screens
Pool Shark H2O Pro4 screens

Verdict

The call

The clearest difference is rating: Pool Shark H2O Pro at 4.7 against Pool Math by TroubleFreePool's 3.7. Pool Shark H2O Pro also leads on review sentiment (100% vs 63%) and in-app purchases (none vs 1). Pool Math by TroubleFreePool's advantage is update cadence (fortnightly vs every 5 months). On price, ratings volume, ads and monetization model 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 by TroubleFreePool sells 1 in-app purchase, starting at $7.99 per year. 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, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 272 and 219 respectively. Written reviews point the same way: 63% of Pool Math by TroubleFreePool's written reviews are positive against 100% of Pool Shark H2O Pro's.

UpkeepUpdate frequency

Pool Math by TroubleFreePool ships an update fortnightly, Pool Shark H2O Pro every 5 months. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

Scorecard5 real differences · 5 level
Pool Math by TroubleFreePool versus Pool Shark H2O Pro: the parameters behind the verdict, then further details
ParameterPool Math by TroubleFreePoolPool Shark H2O Pro
PriceFreeFree
Rating3.7 (272 ratings)4.7 (219 ratings) — better
Positive reviews63.4% of reviews100.0% of reviews — better
Number of ratings272 — better219
Update frequencyFortnightly — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size314 MB4 MB
Age rating4+4+
DeveloperTroubleFreePoolPool Shark H2O, Inc.

Customer experience

Pool Math by TroubleFreePool

All ratings262 ratings
Positive66.0%
Neutral7.3%
Negative26.7%
Written reviews123 reviews
Positive63.4%
Neutral11.4%
Negative25.2%

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

Pool Math by TroubleFreePool

Reported bugs

4 issues
  • Subscription issues and inability to restore purchases
  • App crashes and freezes on certain actions
  • Incorrect chemical recommendations and calculations
  • Disappearing historical data after updates

Requested features

5 requests
  • Custom target ranges and alerts
  • Ability to log non-standard chemical additions
  • Export options for data analysis
  • Apple Watch integration
  • Improved user guidance and on-boarding

Pool Shark H2O Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Pool Math by TroubleFreePool

Subscriptions1
  • Pool Math Premium Subscription$7.991 Year
None

Pool Shark H2O Pro

No in-app purchases

Questions

Is Pool Math by TroubleFreePool free?
Pool Math by TroubleFreePool 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, Pool Math by TroubleFreePool or Pool Shark H2O Pro?
Pool Shark H2O Pro is rated higher. Pool Math by TroubleFreePool averages 3.7 out of 5 from 272 ratings, while Pool Shark H2O Pro averages 4.7 from 219 ratings.
Do Pool Math by TroubleFreePool or Pool Shark H2O Pro have ads?
Neither Pool Math by TroubleFreePool nor Pool Shark H2O Pro shows ads.
Which is updated more often, Pool Math by TroubleFreePool or Pool Shark H2O Pro?
Pool Math by TroubleFreePool ships an update fortnightly, and Pool Shark H2O Pro every 5 months. Most recently, Pool Math by TroubleFreePool was updated on September 22, 2026 and Pool Shark H2O Pro on September 20, 2026.

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