Comparison

Thermals vs HTML Viewer ++

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

Head to head
About

Thermals

Monitor your device's thermal state and processor activity to diagnose performance issues. Understand why your phone might be running slowly, charging slowly, or have reduced brightness due to overheating. Export data for further analysis with other development tools.

Highlights
  • Displays device thermal state
  • Shows active processor count
  • Monitors device uptime
  • Troubleshoots performance issues
  • Helps diagnose slow charging
  • Identifies brightness limitations
  • Exports raw data for analysis
Features
Read full description

Phone running slowly, charging slowly or low brightness? See if your device is overheating using Thermals. Thermals displays your device’s thermal state, as well as how many processors are active on your device and its uptime, as reported by iOS. Thermals helps troubleshoot: • Poor performance — iOS reduces processor speed and potentially disables processors temporarily when the device is hot. • Slow charging — battery charging causes a lot of heat and iOS can limit charging speed to reduce the additional heat that might make a device too hot. • Low maximum brightness — if your device screen stays dark despite being on full brightness, it could be limited by iOS due to heat. • Manufacturing defects — if not all processors are active when the device is cool and not in low power mode. Your device's thermal state is monitored regularly in the background and recorded in the app (if Background App Refresh is enabled). Open the app or tap the widget to record a data point manually. Export the raw data to file for corroboration with Screen Time, Xcode's Instruments, or other development tools. Also an independent Apple Watch app shows the thermal status, active processors and uptime, and thermal history of your watch.

About

HTML Viewer ++

Edit and manage website code with an intuitive interface. Import, export, and access your files from anywhere on iOS devices. Ideal for developers and enthusiasts working with HTML and Swift files.

Highlights
  • Intuitive HTML code editor
  • Import and export Swift files
  • Seamless collaboration
  • Access files anywhere
  • User-friendly interface
Features
Read full description

Website Editor is the ultimate tool for developers and enthusiasts working with Swift files. Designed to provide a smooth, reliable, and optimized experience for iOS, this app revolutionizes the way you edit and manage your Swift code. With Website Editor, you can: - Easily HTML code with an intuitive, user-friendly interface suitable for beginners and experts alike. - Import and export Swift files effortlessly, making collaboration and teamwork seamless. - Access your files anytime, anywhere, keeping your workflow uninterrupted wherever you go. Whether you're starting your journey with Swift, crafting incredible apps, or collaborating on code with your team, Website Editor gives you everything you need to edit your files in iOS devices. Subscription Details Prices vary by location and active promotions. Subscriptions are charged to your credit card through your iTunes account. Your subscription will automatically renew unless canceled at least 24 hours before the end of the current period. Manage your subscriptions in Account Settings after purchase. Any unused portion of a free trial period will be forfeited when you purchase a subscription. Privacy Policy: https://www.iubenda.com/privacy-policy/41310529 End-User Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Thermals4 screens
HTML Viewer ++4 screens

Verdict

The call

Thermals and HTML Viewer ++ both sit at 4.5 stars, but that hides the real split: 83% of Thermals's written reviews are positive against 0% of HTML Viewer ++'s. Thermals also leads on in-app purchases (none vs 3) and chart position (#198 vs unranked). HTML Viewer ++'s advantage is update cadence (every 2 months vs every 3 months). On price, rating, ratings volume and ads 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. HTML Viewer ++ sells 3 in-app purchases, starting at $0.99 per 7 days. Thermals asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for Thermals against 4.6 for HTML Viewer ++. Both are backed by a comparable volume of ratings — 28 and 48 respectively. Written reviews are what separate them: 83% of Thermals's written reviews are positive against 0% of HTML Viewer ++'s.

UpkeepUpdate frequency

Thermals ships an update every 3 months, HTML Viewer ++ every 2 months. The most recent releases landed on September 27, 2026 and September 23, 2026 respectively.

Scorecard5 real differences · 6 level
Thermals versus HTML Viewer ++: the parameters behind the verdict, then further details
ParameterThermalsHTML Viewer ++
PriceFreeFree
Rating4.5 (28 ratings)4.6 (48 ratings) — better
Positive reviews83.3% of reviews — better0.0% of reviews
Number of ratings2848 — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
Best chart rank#198 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Mac
Requires iOS18.618.0 — better
Further details — not scored
Size3 MB35 MB
Age rating4+4+
DeveloperGeorge GarsideHurryApp LTD

Customer experience

Thermals

All ratings28 ratings
Positive89.3%
Neutral3.6%
Negative7.1%
Written reviews30 reviews
Positive83.3%
Neutral6.7%
Negative10.0%

HTML Viewer ++

All ratings48 ratings
Positive87.5%
Neutral4.2%
Negative8.3%
Written reviews7 reviews
Positive0.0%
Neutral14.3%
Negative85.7%

In-app purchases

None

Thermals

No in-app purchases

3 purchases

HTML Viewer ++

Subscriptions3
  • Pro$0.997 Days
  • Coding Pro$3.997 Days
  • Code Pro3 Days trial$69.991 Year

Questions

Is Thermals free?
Thermals is free to download, with no in-app purchases.
Is HTML Viewer ++ free?
HTML Viewer ++ is free to download, with in-app purchases available.
Which has better reviews, Thermals or HTML Viewer ++?
HTML Viewer ++ is rated higher. Thermals averages 4.5 out of 5 from 28 ratings, while HTML Viewer ++ averages 4.6 from 48 ratings.
Do Thermals or HTML Viewer ++ have ads?
Neither Thermals nor HTML Viewer ++ shows ads.
Which is updated more often, Thermals or HTML Viewer ++?
Thermals ships an update every 3 months, and HTML Viewer ++ every 2 months. Most recently, Thermals was updated on September 27, 2026 and HTML Viewer ++ on September 23, 2026.

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