Thermals

George Garside · Developer Tools

4.5 28 ratings Free

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Not currently charting in this storefront.

What changed · US

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Aug 26, 2026
Rating ★ 4.5 → 4.54

Price & rating history · US

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Average rating history over the observed period. 4.5 4.52 4.54 Aug 26 17:34 Aug 27 04:54 Aug 27 16:14 Aug 28 03:33 Aug 28 14:53

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About

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.

What's new · 1.0.1

Features: • Migrate history data to SwiftData, improving performance for large history and reliability of widgets. Fixes: • Fix export button not appearing on the history view. • Fix rare crash caused by text concatenation.

Details

ReleasedDec 2022
UpdatedMay 2026
Version1.0.1
Size2.6 MB
RequiresiOS 26.0 or later
Age rating4+
LanguagesEnglish
PriceFree
Categories Developer ToolsUtilities
Bundle IDcom.georgegarside.thermalstate