Comparison

Temp Master vs PoolCheck

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

Head to head
About

Temp Master

This utility app enhances thermal imaging capabilities for compatible Thermal Master devices, offering precise temperature detection and advanced image analysis. It allows users to view, save, and export thermal data offline, with features like digital zoom and improved resolution for various inspection tasks.

Highlights
  • High-accuracy temperature detection
  • Enhanced infrared resolution
  • Offline data viewing and export
  • Up to 15x digital zoom
  • Reduced background noise
  • Long battery life optimization
Features
Read full description

Temp Master This app is exclusively compatible with the following Thermal Master devices: P1 / P2 Pro / P3. Thermal Master offers two main series of thermal imaging devices—Temp Master (traditional smartphone thermal cameras) and Thermal Master (thermal monoculars)—covering a wide range of use cases from home temperature monitoring and industrial inspections to long-range (up to 1500 meters) outdoor night vision. What's new in this version: Resolved compatibility issues with the X³ super-resolution algorithm on some models. Now fully supports enhanced infrared resolution of 512×384. P2 now supports high-accuracy temperature detection within ±2.7℉ (±1.5℃). With an upgraded IQ+ precision algorithm, temperature readings for HVAC systems, electrical circuits, PCB diagnostics, and automotive inspections are now even more reliable. The P2 pioneered ultra-low power consumption in thermal imaging—just 0.3W. We've further optimized the algorithm, battery life can now reach 5–7 hours or more. Upgraded professional data analysis software: view, save, and export images and temperature data even offline. Enhanced the Razor X image algorithm, reducing background noise by approximately 20% and achieving a frame rate of 25Hz, ensuring smooth performance even during fast movements. All Thermal Master devices now support up to 15x digital zoom for pinpoint accuracy when locating faults. As a global leader in smartphone thermal imaging, Thermal Master is committed to creating smarter and sharper thermal cameras. We hold the largest number of smartphone thermal imaging patents worldwide and offer lifetime free software updates for all products.

About

PoolCheck

Easily test your pool or spa water by photographing your test strips. Get clear chemical dosing instructions, including product amounts and order, to maintain optimal water balance. This app offers a private, ad-free experience with optional in-app purchase to remove ads.

Highlights
  • Photograph test strips for automatic reading
  • Chemical dose calculator with step-by-step plans
  • Calculates gallons from pool dimensions
  • Tracks test history and local weather forecasts
  • Supports various pool types and finishes
  • Private by design, no account required
Features
Read full description

PoolCheck is a free pool test strip reader and pool chemical dose calculator for backyard pool and spa owners. Photograph your test strip, confirm the readings, and get a clear dose plan: which products to add, how much, and in what order. No account and no sign-up. The app opens straight to your pool. READ YOUR TEST STRIP • Take a photo of your strip with your iPhone or iPad camera, or pick one from your photo library. PoolCheck lines up each pad with the color chart and suggests a reading for you. • Color matching runs on your phone. Your strip photos are not uploaded. • Each suggestion is marked so you can check it against the chart on the bottle. Low-confidence pads are flagged or left blank rather than guessed. • Prefer a drop kit? Type your numbers in by hand. EVERY READING THAT MATTERS • Free chlorine (FC) and total chlorine (TC) • pH • Total alkalinity (TA) • Calcium hardness (CH) • Cyanuric acid (CYA / stabilizer) • Bromine for bromine pools and spas A POOL DOSE CALCULATOR THAT SHOWS ITS WORK • A step-by-step plan for your gallons: product, amount, and an everyday measure such as "about 1½ 5 lb bags". • Adds are listed in a safe order: alkalinity, then pH, then sanitizer or shock, then stabilizer, then hardness. • Retest timing for each step, and a confirm screen so you check every number before you pour. • Your free chlorine target is set from your CYA level, not a one-size 1–3 ppm range. • Combined chlorine (TC − FC) is calculated, and PoolCheck suggests a shock toward breakpoint when it is 0.5 ppm or higher. • At-a-glance status for pH, alkalinity, hardness, chlorine and CYA, each marked low, high or OK. BUILT FOR YOUR POOL • Chlorine, saltwater (chlorine generator), bromine and spa. • Vinyl, plaster and fiberglass finishes. • Know your gallons? Type them in. Don't? The pool volume calculator estimates gallons from shape (rectangle, oval, round or kidney), length, width and average depth. • Pick the chemical brand on your shelf. Doses use popular pool-chemical brands or generic store products. • Optional shop links help you find a product online. HISTORY, WEATHER AND HELP • Every completed test is saved with the date on your device. Tap one to reopen it, or swipe to delete it. • Add your ZIP code for a short local forecast and a heads-up to retest after heavy rain. • A built-in Help & FAQ explains strip reading, CYA and chlorine, combined chlorine, and pool volume. • Send feedback straight from the app. PRIVATE BY DESIGN • No account, no password and no cloud profile. Settings, history and purchases stay on your device. • Strip photos are read on your phone and never uploaded. FREE, WITH AN OPTIONAL UPGRADE PoolCheck is free to download and use, and supported by ads on the results screen. A one-time $4.99 in-app purchase removes ads. It is not a subscription. Already bought it? Your purchase is restored automatically from the App Store on this device. WHO IT'S FOR Homeowners who test their own pool or hot tub with strips or a drop kit and want a quick, clear answer to "what do I add?" It's also a handy second check for anyone who looks after a pool. IMPORTANT PoolCheck is a reading and planning aid. Test strips are approximate, so confirm big changes with a drop test kit or your pool store. Add one chemical at a time, never mix chemicals, and always follow the product label. As an Amazon Associate, PoolCheck earns from qualifying purchases made through shop links. Questions or ideas? Use Send feedback in the app. We read every message.

Screenshots

Temp Master4 screens
PoolCheck4 screens

Verdict

The call

The clearest difference is review sentiment: PoolCheck at 100% against Temp Master's 40%. PoolCheck also leads on rating (5.0 vs 3.1) and update cadence (fortnightly vs every 5 weeks). Temp Master's advantage is in-app purchases (none vs 1) and ratings volume (14 vs 2). On price, 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. PoolCheck sells 1 one-off in-app purchase. Temp Master asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PoolCheck holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Temp Master has 14 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 40% of Temp Master's written reviews are positive against 100% of PoolCheck's.

UpkeepUpdate frequency

Temp Master ships an update every 5 weeks, PoolCheck fortnightly. The most recent releases landed on November 4, 2026 and November 13, 2026 respectively.

Scorecard7 real differences · 3 level
Temp Master versus PoolCheck: the parameters behind the verdict, then further details
ParameterTemp MasterPoolCheck
PriceFreeFree
Rating3.1 (14 ratings)5.0 (2 ratings) — better
Positive reviews40.0% of reviews100.0% of reviews — better
Number of ratings14 — better2
Update frequencyEvery 5 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size43 MB3 MB
Age rating4+4+
DeveloperThermal Master Technology Co.,Ltd.Christopher Daniels

Customer experience

Temp Master

All ratings12 ratings
Positive58.3%
Neutral0.0%
Negative41.7%
Written reviews10 reviews
Positive40.0%
Neutral20.0%
Negative40.0%

PoolCheck

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Temp Master

No in-app purchases

1 purchases

PoolCheck

One-time1
  • Remove Ads$2.99

Questions

Is Temp Master free?
Temp Master is free to download, with no in-app purchases.
Is PoolCheck free?
PoolCheck is free to download, with in-app purchases available.
Which has better reviews, Temp Master or PoolCheck?
PoolCheck is rated higher. Temp Master averages 3.1 out of 5 from 14 ratings, while PoolCheck averages 5.0 from 2 ratings.
Do Temp Master or PoolCheck have ads?
Neither Temp Master nor PoolCheck shows ads.
Which is updated more often, Temp Master or PoolCheck?
Temp Master ships an update every 5 weeks, and PoolCheck fortnightly. Most recently, Temp Master was updated on November 4, 2026 and PoolCheck on November 13, 2026.

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