App Icon Generator vs Thermals
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
App Icon Generator
Easily create app icons for various Apple platforms including iOS, watchOS, and macOS. Select an image, choose target devices, and export as individual files or an Xcode-ready asset set. The app ensures icons meet current size and resolution requirements.
- Generate icons for iOS, watchOS, iMessage, and macOS
- Import images from Photo Library or Files
- Select target devices for export
- Export as individual PNG files
- Export as Xcode App Icon Set
- Automatic conversion to PNG
- Supports current size and resolution requirements
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Generate your app icons in seconds for iOS, watchOS, iMessage apps, macOS and more with just a few taps! 1. Choose your icon image from your Photo Library or from Files. 2. Choose the devices that you would like to export for. 3. Tap export. You can choose to export your app icons as individual image files or as an App Icon Set that can be dragged directly in to your Xcode asset catalog. All of your icons are then exported into the selected folder, named by size and automatically converted to PNG ready for use. App Icon Generator is updated to support the current size and resolution requirements for new devices and icon sizes. All icons for this app were generated with App Icon Generator.
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.
Screenshots
Verdict
The clearest difference is price: Thermals at Free against App Icon Generator's $2.99. Thermals also leads on review sentiment (83% vs 42%) and rating (4.5 vs 4.0). On update cadence, ads, in-app purchases and chart position 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
Thermals is free to download; App Icon Generator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Thermals holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Thermals has 30 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 42% of App Icon Generator's written reviews are positive against 83% of Thermals's.
App Icon Generator ships an update every 7 months, Thermals every 3 months. Both last shipped on November 11, 2026.
| Parameter | App Icon Generator | Thermals |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (1 ratings) | 4.5 (30 ratings) — better |
| Positive reviews | 41.7% of reviews | 83.3% of reviews — better |
| Number of ratings | 1 | 30 — better |
| Update frequency | Every 7 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #180 | #173 — better |
| Devices | iPhone, iPad, Mac, Vision Pro — better | iPhone, iPad, Apple Watch |
| Requires iOS | 17.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 3 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Coomer | George Garside |
Customer experience
App Icon Generator
Thermals
In-app purchases
App Icon Generator
No in-app purchases
Thermals
No in-app purchases
Questions
Is App Icon Generator free?
Is Thermals free?
Which has better reviews, App Icon Generator or Thermals?
Do App Icon Generator or Thermals have ads?
Which is updated more often, App Icon Generator or Thermals?
Which is more popular, App Icon Generator or Thermals?
Other comparisons
