PhoneGauge: Heat Throttle Test

PhoneGauge: Heat Throttle Test

Throttling & battery reports

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Free

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Details

Released
October 29, 2026
Updated
October 30, 2026

Features

PhoneGauge: Heat Throttle Test screenshot #1 for iPhone
PhoneGauge: Heat Throttle Test screenshot #2 for iPhone
PhoneGauge: Heat Throttle Test screenshot #3 for iPhone
PhoneGauge: Heat Throttle Test screenshot #4 for iPhone
PhoneGauge: Heat Throttle Test screenshot #5 for iPhone
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About

PhoneGauge measures what really happens when your iPhone heats up. ■ Thermal Throttling Test Runs a steady workload on every CPU core and charts, second by second, how much performance drops as the device heats up. · 3, 5, 10 or 15-minute tests, graded S to D · Final and lowest performance, time to "hot", battery used · Tag runs with case on/off and charging to compare conditions · Share your result card as an image ■ Activity Log Start a log before gaming, filming, watching video, navigating or video calling. · Elapsed time on the Lock Screen and Dynamic Island · A report when you finish: battery used, drain per hour, peak thermal state · Compare average battery drain by activity ■ Charger Compare Name your chargers and cables, measure how many percent per minute each adds, and see them ranked. Spot slow cables at a glance. ■ Heat Journal Logs what was going on whenever the thermal state changed (charging, CPU load, screen brightness, data transfer, current activity) to help you find what makes your phone hot. ■ Live Details Per-core CPU, memory, network speed and traffic, storage, and Home Screen widgets. ■ Honest by design iOS doesn't give apps exact temperatures or other apps' usage. PhoneGauge only uses the 4-level thermal state iOS provides and values it measures itself, and never claims to do what iOS doesn't allow. Your measurements stay on your device. We only collect anonymous usage statistics to improve the app (never for ads or tracking).
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What's New in PhoneGauge

1.1

October 30, 2026

We refocused the app on the thermal throttling test. · Thermal Throttling Test: see how much your iPhone slows down as it heats up, with a per-second chart and a grade · Activity Log: get a battery report for gaming, filming or watching video (renamed from "Sessions") · Added Charger Compare and Heat Journal · Removed the title bar at the top of each tab for more room · The bright cartoon theme now stays on in Dark Mode · Bug fixes and stability improvements Privacy: to improve the app, we collect anonymous usage statistics (Google Analytics for Firebase). They are not used for ads or tracking. Your measurement records stay on your device.

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