Watt CS: Charging Speed Meter
Wattage Monitor & Charger Test
About
Measure your charger's real-time output with 0.1W precision. Benchmark chargers, test cables, and understand your battery's charging behavior. Get accurate data to ensure optimal charging speeds and battery health.
What's New in Watt CS
1.0
May 6, 2026
Developer apps
FAQ
What is Watt CS?
Watt CS is a utility app designed to measure your charger's real-time output with high precision. It helps you benchmark chargers, test cables, and understand your battery's charging patterns.
How accurate is Watt CS?
Watt CS provides live watts updated continuously with 0.1W precision, using direct hardware sensor data. Professional hardware calibration ensures every reading is accurate.
Does Watt CS have ads?
No, Watt CS is completely ad-free. It also does not require an account or an internet connection, ensuring your privacy and a seamless user experience.
What devices does Watt CS support?
Watt CS is designed for both iPhone and iPad, offering its full range of features across both platforms.
How does Watt CS help with battery health?
Watt CS features 80% trickle detection with visual warnings and explanations. It helps you understand why charging intentionally slows after 80% to protect battery health.
Can I test different chargers with Watt CS?
Yes, you can run scientific speed tests with custom start and end percentages to benchmark various chargers like Apple 20W, Anker, or MacBook chargers side by side.
What is the price of Watt CS?
Watt CS is a paid application, available for a one-time purchase of $0.99.
How often is Watt CS updated?
Watt CS was last updated on May 6, 2026, with version 1.0. Future updates will likely continue to refine features and ensure compatibility.
