WAS: User-Agent Switcher for iPhone

Quick summary

WAS: User-Agent Switcher is an iPhone utility that makes it simple to view how web pages render across different devices. It lets you flip between mobile and desktop presentations with a single tap and change the user-agent string to emulate other browsers or devices. A built-in WebView lets you preview sites without needing extra hardware or emulator software.

Primary capabilities

• One-tap toggling between mobile and desktop layouts for instant visual checks
• Create and manage custom user-agent strings, or pick from many preloaded options
• Integrated WebView browser for on-device previews without relying on simulators or additional gadgets
• Multiple quick-access settings designed to speed up compatibility testing

How it improves testing workflow

WAS reduces the overhead of cross-device checking by consolidating device emulation into a compact app. Instead of switching between physical devices or launching emulators, you can validate layout, functionality, and content presentation directly on your iPhone. The ability to save frequently used agents and tweak settings accelerates repetitive checks during development or QA.

Suggested alternative

• Streisand (Free) — a recommended substitute that also offers a wide selection of user-agent presets and options to configure your own agents

Why choose this tool

• Cuts down the need for multiple hardware setups
• Speeds up iterative testing with saved agents and streamlined settings
• Useful for developers, designers, and QA engineers who need quick previews of how sites behave under different browser identities

If you want, I can outline a quick checklist for testing a page with WAS or show step-by-step instructions for creating a custom user-agent.