Comparison

Pool Math by TroubleFreePool vs DolphinTech Plus

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

DolphinTech Plus

This app offers technicians a clever diagnostic and repair tool for robots. It allows for easy connection, parameter access, and system diagnosis to identify and fix errors. Technicians can also perform various repair actions and access helpful resources.

Highlights
  • Connect to LIBERTY™ Robots
  • Access robot parameters via Bluetooth
  • Perform system diagnosis
  • Execute corrective actions
  • Activate tic-tac mode
  • Motor unit replacement
  • Access knowledge articles and videos
Features
Read full description

The 'DolphinTech™ Plus' app is built to provide a simple to use, and incredibly clever diagnosis and repair tool. The app is designed to save time and let you get to what’s important. Technicians can: ● Connect to ALL LIBERTY™ Robots for an easy diagnose and repair ● Support only Wi-Fi® enabled power supplies ● Easily access the robot’s parameters via Bluetooth® ● Perform end user actions ● Run system diagnosis to find errors and assist with corrective actions ● Activate the robot in tic-tac mode ● Perform motor unit replacement ● Access knowledge articles and get new and extra-relevant how-to videos and documents

Screenshots

Pool Math by TroubleFreePool4 screens
DolphinTech Plus4 screens

Verdict

The call

The clearest difference is review sentiment: Pool Math by TroubleFreePool at 63% against DolphinTech Plus's 8%. Pool Math by TroubleFreePool also leads on rating (3.7 vs 1.7) and update cadence (fortnightly vs every 4 months). DolphinTech Plus's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement 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. DolphinTech Plus asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Pool Math by TroubleFreePool holds the better App Store score, 3.7 against 1.7. That said, the two scores are not equally well evidenced: Pool Math by TroubleFreePool has 272 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 63% of Pool Math by TroubleFreePool's written reviews are positive against 8% of DolphinTech Plus's.

UpkeepUpdate frequency

Pool Math by TroubleFreePool ships an update fortnightly, DolphinTech Plus every 4 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

Scorecard6 real differences · 4 level
Pool Math by TroubleFreePool versus DolphinTech Plus: the parameters behind the verdict, then further details
ParameterPool Math by TroubleFreePoolDolphinTech Plus
PriceFreeFree
Rating3.7 (272 ratings) — better1.7 (13 ratings)
Positive reviews63.4% of reviews — better8.3% of reviews
Number of ratings272 — better13
Update frequencyFortnightly — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size314 MB95 MB
Age rating4+4+
DeveloperTroubleFreePoolMaytronics

Customer experience

Pool Math by TroubleFreePool

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

DolphinTech Plus

All ratings13 ratings
Positive15.4%
Neutral7.7%
Negative76.9%
Written reviews12 reviews
Positive8.3%
Neutral0.0%
Negative91.7%

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

DolphinTech Plus

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

DolphinTech Plus

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 DolphinTech Plus free?
DolphinTech Plus is free to download, with no in-app purchases.
Which has better reviews, Pool Math by TroubleFreePool or DolphinTech Plus?
Pool Math by TroubleFreePool is rated higher. Pool Math by TroubleFreePool averages 3.7 out of 5 from 272 ratings, while DolphinTech Plus averages 1.7 from 13 ratings.
Do Pool Math by TroubleFreePool or DolphinTech Plus have ads?
Neither Pool Math by TroubleFreePool nor DolphinTech Plus shows ads.
Which is updated more often, Pool Math by TroubleFreePool or DolphinTech Plus?
Pool Math by TroubleFreePool ships an update fortnightly, and DolphinTech Plus every 4 months. Most recently, Pool Math by TroubleFreePool was updated on October 7, 2026 and DolphinTech Plus on October 8, 2026.

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