Thermals vs AppIconCreator
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.
AppIconCreator
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a simple way to create your appiconset from your iPhone or iPad... with all recommended images and contents.json in a folder. You only have to drag and drop that folder to your images.asset....
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Verdict
The clearest difference is chart position: Thermals at #111 against AppIconCreator's unranked. AppIconCreator's advantage is iOS requirement (16.6 vs 18.6). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Thermals ships an update every 3 months, AppIconCreator every 4 months. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.
| Parameter | Thermals | AppIconCreator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (29 ratings) — better | — |
| Positive reviews | 83.3% of reviews | — |
| Number of ratings | 29 — better | — |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | #111 — better | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.6 | 16.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | George Garside | Andrea Schmerber |
In-app purchases
Thermals
No in-app purchases
AppIconCreator
No in-app purchases
Questions
Is Thermals free?
Is AppIconCreator free?
Do Thermals or AppIconCreator have ads?
Which is updated more often, Thermals or AppIconCreator?
Other comparisons
