Comparison

Pool Log vs MyPoolGuy

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

Head to head
About

Pool Log

This app provides precise chemical dosing instructions for pools and spas based on your test results. It tracks multiple water bodies, integrates local weather data, and offers advanced features like SLAM mode for algae and CSI calculations. All data is stored locally for privacy.

Highlights
  • Precise chemical dosing instructions
  • Manages multiple pools and spas
  • Weather-aware test result tracking
  • SLAM mode for algae treatment
  • Calcite Saturation Index (CSI) calculation
  • Chemical addition logging
  • Maintenance task tracking
Features
Read full description

SKIP THE POOL STORE Stop driving to the pool store for tests that are inconsistent, expensive, and end with someone trying to upsell you chemicals you don't need. PoolLog turns your own test results into precise dosing instructions in seconds — using the same Taylor Technologies and Pool & Hot Tub Alliance formulas the pros rely on. POOLS AND SPAS, ONE APP Manage every body of water from one place. PoolLog handles backyard pools, spas, hot tubs, and rentals — each with its own sanitizer system, surface type, target ranges, and history. Switch between them with a tap. WEATHER-AWARE TRACKING Test results pair with the local weather automatically (no location permission required, just a postal code). Spot the patterns that matter: heatwave chlorine drops, post-rain alkalinity swings, the bather load that always nudges your pH. YOUR DATA. YOUR DEVICE. No account required. Nothing leaves your phone unless you turn on optional iCloud sync — and even then it's only ever between your own Apple devices. Other apps want a login and a cloud account before they'll show you a number. We don't. PREVIEW THE EXACT DOSE Before you add anything, PoolLog shows the precise amount of each chemical you'd need to reach your target — accounting for your pool's volume, current chemistry, and the specific concentration of the product on your shelf. Add the chemical, log the addition, done. GROUNDED IN REAL CHEMISTRY Recommendations come from peer-reviewed industry standards — Taylor Technologies, the Pool & Hot Tub Alliance, and the same CSI formula commercial operators use to keep plaster pools from etching or scaling. We document every formula in the app's references. SLAM MODE FOR ALGAE When the green hits, switch on SLAM (Shock, Level, And Maintain) and PoolLog raises the chlorine target to the appropriate level for your CYA, walks you through the procedure, and resets when you're back to normal. Built for the TFP-style algae recovery the rest of the industry won't talk about. CSI CALCULATION INCLUDED The Calcite Saturation Index tells you whether your water is going to scale (build up calcium deposits) or etch (eat your plaster). PoolLog calculates it from your pH, temperature, calcium hardness, alkalinity, and TDS — and shows it on the dashboard, not buried in a settings screen. EVERYTHING THAT'S IN HERE • Free chlorine, combined chlorine, total chlorine • Bromine sanitizer support (chlorine alternative for spas) • pH, total alkalinity, calcium hardness, cyanuric acid • Salt level with custom ranges per cell manufacturer (Hayward, Pentair, Jandy) • Borates, TDS, water temperature • CSI dashboard tile and history • Chemical addition logging with concentration-aware dosing • Maintenance task tracking — brushing, backwashing, filter cleans, opening/closing • Expense tracking with categories • Beautiful charts for every level • Test reminders that pause when the pool is closed for the season • Imperial / UK imperial / metric units • English, Spanish, and French PREMIUM FEATURES Upgrade to Premium with a monthly or yearly subscription: • Multiple pools (free version supports one) • Data export to CSV for spreadsheets and analysis • iCloud sync across your Apple devices • Test strip scanner (coming soon) • Priority support WHO THIS IS FOR Pool and spa owners who'd rather spend their weekend swimming than queueing at the pool store. New owners who want a smart guide. Experienced owners who already know their CYA from their CSI and want a logger that respects that. Privacy Policy: https://blite.github.io/PoolLog/privacy/ Terms of Service: https://blite.github.io/PoolLog/terms/

About

MyPoolGuy

Read full description

MyPoolGuy is now completely FREE to download — the pool guy in your pocket, for every pool owner. Stop guessing what to put in your pool. Enter your water test readings and MyPoolGuy's dosing engine tells you exactly what to add and how much — for chlorine pools, salt water pools, bromine pools, and hot tubs. WATER TESTING MADE SIMPLE • Works with the test strips or liquid kit you already own — just enter your readings • Instant analysis of free chlorine, pH, alkalinity, calcium hardness, cyanuric acid, and salt • Clear, color-coded results you can actually understand EXACT CHEMICAL DOSING • Precise amounts based on your pool's volume — in pounds, ounces, or gallons • Chlorine, salt water, and bromine pools, plus hot tubs and spas • Step-by-step plans for common problems like algae and cloudy water • Know exactly what to buy before you walk into the store FIND A PRO • Locate pool service pros and retail pool supply stores near you • See ratings and reviews from other pool owners • Rate and review your own pool pro LOCAL DEALS • Participating local pool stores send deals and promos straight to the app SERVICE REPORTS & HISTORY • Keep a clean history of your water tests and service visits FULLY BILINGUAL • Every screen in English and Spanish — switch anytime FREE TO USE MyPoolGuy is free to download and free to use. An optional Pro subscription adds extras like trend charts and smart insights — the core toolkit stays free. Whether you're opening the pool for the season, fighting cloudy water, balancing a salt water pool, or keeping a hot tub crystal clear, MyPoolGuy gives you a straight answer in seconds. The pool guy in your pocket. Download free today.

Screenshots

Pool Log4 screens
MyPoolGuy4 screens

Verdict

The call

The clearest difference is update cadence: MyPoolGuy at every 9 days against Pool Log's every 4 weeks. MyPoolGuy also leads on iOS requirement (15.1 vs 26.0). On price, ads, in-app purchases 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 Log sells 2 in-app purchases, starting at $0.99 per month and MyPoolGuy sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Pool Log ships an update every 4 weeks, MyPoolGuy every 9 days. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 7 level
Pool Log versus MyPoolGuy: the parameters behind the verdict, then further details
ParameterPool LogMyPoolGuy
PriceFreeFree
Rating4.8 (8 ratings) — better—
Number of ratings8 — better—
Update frequencyEvery 4 weeksEvery 9 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS26.015.1 — better
Further details — not scored
Size14 MB50 MB
Age rating4+4+
DeveloperMichael HollowayDubas Digital LLC

In-app purchases

2 purchases

Pool Log

Subscriptions2
  • Monthly Plan7 Days trial$0.991 Month
  • Annual Plan7 Days trial$7.991 Year
1 purchases

MyPoolGuy

Subscriptions1
  • MyPoolGuy Pro3 Months trial$0.991 Month

Questions

Is Pool Log free?
Pool Log is free to download, with in-app purchases available.
Is MyPoolGuy free?
MyPoolGuy is free to download, with in-app purchases available.
Do Pool Log or MyPoolGuy have ads?
Neither Pool Log nor MyPoolGuy shows ads.
Which is updated more often, Pool Log or MyPoolGuy?
Pool Log ships an update every 4 weeks, and MyPoolGuy every 9 days. Most recently, Pool Log was updated on October 15, 2026 and MyPoolGuy on October 6, 2026.

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