Comparison

Watt CS vs Simple Video Speed Controller

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Watt CS

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.

Highlights
  • Real-time wattage monitoring (0.1W precision)
  • Charger speed benchmarking
  • Smart charging history logging
  • 80% trickle charge detection
  • No ads, accounts, or internet required
  • Supports iPhone and iPad
Features
Read full description

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.

About

Simple Video Speed Controller

Features
Read full description

Adjust the video speed on any website. Enhance your viewing experience with our open source browser extension, designed to adjust playback speeds across a wide range of streaming platforms. Whether you're looking to speed through content or slow it down for detailed viewing, the extension gives you simple, seamless control over video playback. Be sure to reload your tabs after installing and pin the extension for easy access! **Universal Compatibility:** Works with major streaming platforms and video content across the web, including YouTube, Netflix, Disney, and other popular services. Whether you're watching educational content, entertainment, sports, or news videos, this extension allows you to control playback speed on any site that uses standard HTML5 video players. **Key use cases:** * Speed up educational videos and tutorials * Watch entertainment content at your preferred pace * Control playback speed on news and sports highlights * Adjust lecture and presentation videos for better comprehension * Maintain consistent speed settings across different video platforms **Temporary Boost:** Need to speed through just part of a video? Hold your Temporary Boost keyboard shortcut to instantly switch to your chosen boost speed. Release the keys to return to your previous playback speed. Choose both your preferred Temporary Boost speed and shortcut key: * Windows/Linux: `Ctrl + Shift + [custom key]` * Mac: `Command + Option + [custom key]` Set them once and use the shortcut whenever you want a quick temporary increase in playback speed. **Keyboard Shortcuts:** Windows/Linux: * `Ctrl + Shift + Plus` to increase speed * `Ctrl + Shift + Minus` to decrease speed * `Ctrl + Shift + Backspace` to reset to 1x speed * `Ctrl + Shift + [1-9]` to set a specific speed. Press again to add 0.5x, and press again to revert. * `Ctrl + Shift + 0` to set the maximum speed of 16x. Press again to reset to 1x speed. Mac: * `Command + Option + Plus` to increase speed * `Command + Option + Minus` to decrease speed * `Command + Option + Delete` to reset to 1x speed * `Command + Option + [1-9]` to set a specific speed. Press again to add 0.5x, and press again to revert. * `Command + Option + 0` to set the maximum speed of 16x. Press again to reset to 1x speed. **Domain-Specific Speed Memory:** Remembers your preferred playback speed for each website. **Clean, Intuitive Interface:** * Quick preset buttons for common speeds (0.5x to 3x) * Custom speed input for precise control * Fine-tuning buttons for incremental adjustments * Customizable Temporary Boost speed and shortcut key See my other work at: https://chaseos.app **Open Source Code:** https://github.com/Chaseos/SimpleVideoSpeedController

Screenshots

Watt CS4 screens
Simple Video Speed Controller4 screens

Verdict

The call

The clearest difference is price: Simple Video Speed Controller at Free against Watt CS's $0.99. Watt CS's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Simple Video Speed Controller is free to download; Watt CS costs $0.99 up front. Simple Video Speed Controller sells 3 one-off in-app purchases. Watt CS asks for nothing beyond the download.

Scorecard2 real differences · 6 level
Watt CS versus Simple Video Speed Controller: the parameters behind the verdict, then further details
ParameterWatt CSSimple Video Speed Controller
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS16.016.0
Further details — not scored
Size37 MB3 MB
Age rating4+4+
DeveloperAakash SajjadChase Olson

In-app purchases

None

Watt CS

No in-app purchases

3 purchases

Simple Video Speed Controller

One-time3
  • Small Tip$0.99
  • Standard Tip$2.99
  • Generous Tip$4.99

Questions

Is Watt CS free?
Watt CS costs $0.99, with no in-app purchases.
Is Simple Video Speed Controller free?
Simple Video Speed Controller is free to download, with in-app purchases available.
Do Watt CS or Simple Video Speed Controller have ads?
Neither Watt CS nor Simple Video Speed Controller shows ads.

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