Comparison

Pool Math by TroubleFreePool vs dewenwils

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

dewenwils

Control your smart home devices remotely and connect them for a seamless experience. Monitor device status from anywhere and share access with family members. Discover and purchase new smart products through the integrated online mall.

Highlights
  • Remote device control
  • Smart home connection
  • Family device sharing
  • Real-time status feedback
  • Online smart product mall
Read full description

Life is simple from now on. 1、Device Control: remote control, build a "smart family". 2、Smart Connection: fast connection, enjoy the extremely speed experience. 3、Shared Devices: make it easy for the whole family to enjoy smart life. 4、Information Feedback: gain insight into the status of your home devices, anytime, anywhere. 5、Online Mall: enter the mall to buy smart products.

Screenshots

Pool Math by TroubleFreePool4 screens
dewenwils4 screens

Verdict

The call

The clearest difference is rating: dewenwils at 4.6 against Pool Math by TroubleFreePool's 3.6. dewenwils also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.0). Pool Math by TroubleFreePool's advantage is review sentiment (63% vs 32%) and update cadence (fortnightly vs every 10 months). On price, ratings volume, ads 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 by TroubleFreePool sells 1 in-app purchase, starting at $7.99 per year. dewenwils asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

dewenwils holds the better App Store score, 4.6 against 3.6. Both are backed by a comparable volume of ratings — 287 and 237 respectively. Written reviews complicate that: 63% of Pool Math by TroubleFreePool's written reviews are positive against 32% of dewenwils's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Pool Math by TroubleFreePool ships an update fortnightly, dewenwils every 10 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Pool Math by TroubleFreePool versus dewenwils: the parameters behind the verdict, then further details
ParameterPool Math by TroubleFreePooldewenwils
PriceFreeFree
Rating3.6 (287 ratings)4.6 (237 ratings) — better
Positive reviews63.3% of reviews — better31.8% of reviews
Number of ratings287 — better237
Update frequencyFortnightly — betterEvery 10 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size314 MB179 MB
Age rating4+4+
DeveloperTroubleFreePoolDewenwils Inc.

Customer experience

Pool Math by TroubleFreePool

All ratings262 ratings
Positive66.0%
Neutral7.3%
Negative26.7%
Written reviews128 reviews
Positive63.3%
Neutral10.9%
Negative25.8%

dewenwils

All ratings225 ratings
Positive93.3%
Neutral2.2%
Negative4.4%
Written reviews22 reviews
Positive31.8%
Neutral18.2%
Negative50.0%

User reviews

Pool Math by TroubleFreePool

From 287 App Store ratings

What we love

  • 💎 Excellent for maintaining a clean, balanced pool
  • 🔍 Comprehensive tracking of test results and chemical additions
  • 🧠 Helpful recommendations for chemical adjustments
  • ⚙️ Useful features like SLAM mode and timeline
  • 🤖 Automatic weather data logging

Room to improve

  • 🐛 Issues with data syncing and backup
  • 🤔 Unintuitive interface and navigation
  • 💰 Subscription model and lack of one-time purchase
  • 🚫 Limited support for non-chlorine sanitizers and spa-specific options
  • 🔄 Bugs with chemical addition logging and target value retention

dewenwils

From 237 App Store ratings

What we love

  • 👍 App works well
  • 👍 Connects easily
  • 👍 Easy to use
  • 👍 Manual function works fine
  • 👍 Highly recommend these units

Room to improve

  • 🐛 Timer switch consistently turns off
  • 🐛 App is confusing
  • 🐛 UI is not intuitive
  • 🐛 Password saving unclear
  • 🐛 Constantly logged out

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

dewenwils

Reported bugs

16 issues
  • Device switch locations move on 'All Devices' page
  • Timer switch consistently turns off on its own
  • App constantly logs out users
  • Astronomical mode doesn't work
  • Cannot adjust for sunrise/sunset times
Show 11 more
  • Scheduler interface is unordered and hard to check
  • Connecting to WiFi requires disabling 5G
  • App only turns transformer on and off, no circuit separation
  • Schedule function doesn't work
  • Timer function does not turn devices on or off
  • GUI doesn't reflect zone changes
  • Cannot turn zones off with the app
  • App has stopped working for pool motor timer
  • Cannot set on and off times anymore
  • App loses the network consistently
  • Scenes do not activate when saved

Requested features

7 requests
  • Indication on 'AllDevices' page if each is On or Off
  • Bigger back arrow
  • Clarify device prompt labels
  • Widgets or shortcut commands
  • Apple Home integration
Show 2 more
  • iPhone widget for easy access
  • Feature to set timer to turn on for a certain amount of time then go off

In-app purchases

1 purchases

Pool Math by TroubleFreePool

Subscriptions1
  • Pool Math Premium Subscription$7.991 Year
None

dewenwils

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 dewenwils free?
dewenwils is free to download, with no in-app purchases.
Which has better reviews, Pool Math by TroubleFreePool or dewenwils?
dewenwils is rated higher. Pool Math by TroubleFreePool averages 3.6 out of 5 from 287 ratings, while dewenwils averages 4.6 from 237 ratings.
Do Pool Math by TroubleFreePool or dewenwils have ads?
Neither Pool Math by TroubleFreePool nor dewenwils shows ads.
Which is updated more often, Pool Math by TroubleFreePool or dewenwils?
Pool Math by TroubleFreePool ships an update fortnightly, and dewenwils every 10 months. Most recently, Pool Math by TroubleFreePool was updated on November 4, 2026 and dewenwils on November 3, 2026.

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