New devices, a clearer first reading and a better iPad layout: • The first reading can take up to about 10% of charging, and Watt now says so while it waits • Battery sizes for iPhone 18 Pro, iPhone 18 Pro Max, iPhone Duo and iPhone 17e, and for iPad Pro (M5), iPad Air (M3 and M4), iPad (A16) and iPad mini (A17 Pro) • Battery sizes for iPhone XS, iPhone XS Max, iPhone XR and older iPads too, so every iPhone and iPad that runs iOS 18.6 is covered • Corrected battery sizes for iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max and iPad (10th generation) • iPhone 17 Pro and iPhone 17 Pro Max outside the US: battery data is now more accurate for your model, so readings may differ slightly from earlier sessions • On some iPhone Pro models Watt asks once whether your iPhone has a SIM card tray, so it uses the right battery. You can change the answer in Settings • Devices Watt doesn't know yet now show "Battery capacity estimated for this device" • New on iPad and an open iPhone Duo: the charging ring and status stay on screen while you switch between Details and Benchmark • New: Send Feedback in Settings and in How It Works

Accuracy fixes for sessions and benchmarks: • Sessions that charge all the way to 100% are now saved with the correct end level and duration • A benchmark no longer saves a misleading result if the app was in the background when the target level was reached — it now tells you to run the test again • A finished benchmark no longer keeps the screen awake or blocks other tests • The live wattage follows the current rate when charging slows down, and very low power is correctly shown as trickle charging • Fixed text being cut off with "…" when a large accessibility text size is enabled

Your charging history just got personal: • Label each session with the charger and cable you used, and add your own notes — tap any past session to edit • Sessions are no longer lost if you unplug while the app is in the background • New "Charging Paused" state when iOS pauses charging, and clearer guidance while measuring • Accurate wattage on iPhone 11, 12, and SE models • Benchmark results now show the battery range actually measured, plus localized number formatting and bug fixes

Charging just got more insightful: • Watt graph for every benchmark result — see how each charger performed over time • Rename benchmark tests and charger labels • Haptic feedback when you plug in, complete a benchmark, or save a session • Smoother graphs during long sessions, improved translations, and bug fixes

Improved timing of the rating prompt — it now only appears after a completed measurement or benchmark, never during one.

This update makes measurements far more reliable: • The screen now stays awake while measuring — also when you plug in before opening the app • More accurate wattage estimates, with no more impossible spikes • Long charging sessions now show your average speed even if the measurement was interrupted • Fixed benchmark tests that could get stuck and never finish • Charging sessions are saved to history more reliably Thanks for all the feedback — keep it coming!

• More accurate charging watts — readings are now capped to realistic limits for your device, so you'll never see impossible numbers again. • Faster, smoother watt updates during a charging session. • Watts-over-time graph is now saved for every session. Open any past session in History to see exactly how your charge ramped up and tapered off.

Watt Charging Speed now speaks your language! This update adds full localization for 16 languages: English, Norwegian, Japanese, Simplified Chinese, Korean, German, French, Spanish, Portuguese, Italian, Turkish, Thai, Vietnamese, Indonesian, Malay, and Filipino The app automatically matches your device language — no setup needed. Every screen, label, and explanation is fully translated.

Updated app icon