Thermals vs HTML Viewer ++
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
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.
- Intuitive HTML code editor
- Import and export Swift files
- Seamless collaboration
- Access files anywhere
- User-friendly interface
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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
Verdict
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
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.
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.
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.
| Parameter | Thermals | HTML Viewer ++ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (28 ratings) | 4.6 (48 ratings) — better |
| Positive reviews | 83.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 28 | 48 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | #198 — better | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Mac |
| Requires iOS | 18.6 | 18.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | George Garside | HurryApp LTD |
Customer experience
Thermals
HTML Viewer ++
In-app purchases
Thermals
No in-app purchases
HTML Viewer ++
- Pro$0.997 Days
- Coding Pro$3.997 Days
- Code Pro3 Days trial$69.991 Year









