Verify your phone's real-time charging power in seconds.
Choose a display mode below to explore how the app works.
Launch Watts of Charger. The large display flashes "No Charger," indicating the app is ready and waiting for a connection.
Plug your charging cable into your phone. The app instantly detects the power flow and the display updates automatically.
The large green number shows current Watts. Below it, Voltage (V) appears in black and Current (mA) appears in red.
Tap the options menu (⋮) and select Gauge Mode to switch to a visual speedometer view with animated needles and L:/H: min/max tracking.
Tap the options menu (⋮) in the top-right corner and select "Gauge Mode" to activate the visual speedometer display.
Plug in your charging cable. All three gauges activate — Power (W), Voltage (V), and Current (mA) — with animated needles.
Each card shows a semicircular needle gauge with the current value in the center. The L: and H: labels track session low and high values live.
The H: (High) value records the peak wattage your charger ever reached. Compare this across different chargers to find your fastest one!