Watt CS: Charging Speed Meter
Wattage Monitor & Charger Test
USD 0.99 · Designed for iPad. Not verified for macOS.
NEW: Charger Leaderboard ranks your Apple, Anker & cables by real efficiency. See live wattage, run custom benchmarks, and finally know which charger wins
Stop guessing. Start measuring.
Watt CS shows your charger's true output in real time — down to 0.1W — using direct hardware sensor data via the Nitro Library. Plug in and instantly know if you're getting fast charging, or being shortchanged by a cheap cable.
— REAL-TIME WATTAGE MONITOR —
• Live watts updated continuously with 0.1W precision
• Direct hardware sensor access via Nitro Library — not estimated
• Dynamic charging ring changes color and icon for Fast or Full states
• Professional hardware calibration ensures every reading is accurate
— BENCHMARK YOUR CHARGERS —
• Run scientific speed tests with custom start and end percentages
• Test Apple 20W, Anker, MacBook charger, or any cable side by side
• Charger Leaderboard automatically ranks every charger by real efficiency
• Know exactly which charger is worth keeping and which to replace
— SMART CHARGING HISTORY —
• Every session logged automatically: Max Watts, Avg Speed, Total Time
• One-tap filters: Fast, Normal, or Slow sessions in one tap
• Spot patterns — does your charger slow down at night? History reveals it
— UNDERSTAND YOUR BATTERY —
• 80% Trickle Detection with visual warning and science-backed explanation
• Know why charging intentionally slows after 80% to protect battery health
• No more wondering if something is wrong — the app explains it clearly
— PREMIUM & PRIVATE —
• No ads. No accounts. No internet connection required.
• All data stays entirely on your device
• Glassmorphism UI, full Dark Mode, animated splash screen
• Designed for iPhone and iPad
PERFECT FOR:
→ Testing a new charger before trusting it overnight
→ Diagnosing why your iPhone charges slowly
→ Verifying your cable actually supports fast charging
→ Deciding which charger to pack for a trip
Watt CS gives you the data. You make the decision.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Aakash Sajjad, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Aakash Sajjad
- Size
- 38.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Watt CS: Charging Speed Meter Inc. All rights reserved
