Testing your app under poor network conditions is essential for delivering a robust user experience. Here are the top 5 tools to simulate 3G, Edge, and high latency in 2025.
| Tool | Platform | Mobile Setup | Price |
|---|---|---|---|
| 1. Debuggo | Web (Cloud) | Zero Install | Free / $19 |
| 2. Charles Proxy | Desktop | Complex (IP/Cert) | $50 |
| 3. Net Link Conditioner | Mac Only | USB / Dev Mode | Free |
1. Debuggo (Best for Teams)
Platform: Cloud (Web-based)
Debuggo is the modern, cloud-native approach. It works on any device (iOS, Android, Web) without installation. You can share throttling profiles (e.g., "Subway Mode") with your team via a link.
- ✅ No installation required
- ✅ Works for remote teams
- ✅ Built-in chaos engineering
2. Charles Proxy
Platform: Desktop (Mac/Windows/Linux)
The industry standard for years. Powerful, but requires a complex setup and tethering devices to your computer.
3. Chrome DevTools
Platform: Desktop Browser
Perfect for web development. Built right into Chrome. However, it only throttles the browser tab, not the entire system or mobile devices.
4. Network Link Conditioner
Platform: macOS / iOS (Developer Mode)
Apple's native tool. It simulates network conditions at the system level. Great for iOS testing, but requires a Mac and enabling Developer Mode on iPhone.
5. Proxyman (Best for Mac/iOS)
Platform: Native macOS / iOS
A modern, high-performance alternative to Charles. Built natively for macOS, it feels much snappier and easier to use. It has a great free version.
Deep Dive: Proxyman vs Charles Proxy
Many developers ask: "Is Proxyman better than Charles?" Here is a quick breakdown to help you decide.
| Feature | Proxyman | Charles Proxy |
|---|---|---|
| Interface | Modern, Native macOS | Clunky Java UI |
| Mobile Setup | Auto-setup (iOS Script) | Manual IP & Port |
| Performance | High (Apple Silicon optimized) | Slower (Java VM) |
| Price | Free / $69 (One-time) | $50 (One-time) |