Watt CS: Charging Speed Meter

About

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.