
Free
About
ChargeWatt shows how fast your iPhone is charging, in watts, and keeps a record of every charge.
Find your fastest charger, compare your cables and keep an eye on your battery's health.
CHARGING POWER IN WATTS
- Estimated charging power while your iPhone charges
- A speed curve for every charge, plus a battery level chart
- First value after a few minutes of charging, or right away from your past charges with the same charger
iOS doesn't share charging current with apps, so ChargeWatt estimates the watts: while the app is open it times the battery's 5% level steps and multiplies that speed by your iPhone model's battery capacity. Values are always labeled "Estimated".
EVERY CHARGE, RECORDED
- Start, end, levels, duration, speed, thermal state and charger
- Keeps recording while the app is closed, with two Shortcuts automations
- Recognizes charges in the car through CarPlay or driving motion data
COMPARE CHARGERS
- See which charger takes your iPhone from 20% to 80% the fastest
- Charging habits: overnight charging, charging to 100%, hot charges
- Practical tips for your battery
BATTERY HEALTH LOG
- Enter Maximum Capacity and cycle count from iOS Settings
- Follow them on a chart over time
- A monthly reminder to add a new entry
CHARGE ALARM
- Get a notification when your battery reaches the level you choose, like 80%
ALWAYS IN VIEW
- Live Activity on the Lock Screen and in the Dynamic Island while charging
- Home Screen, Lock Screen and StandBy widgets
- Siri and Shortcuts actions
- Export your raw data as CSV
PRIVATE BY DESIGN
- No account, no ads, no tracking
- Your data stays on your iPhone
- Available in 51 languages
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What's New in ChargeWatt
1.0.0
October 19, 2026




