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BrowserStack Live vs Responsive Design Checker: catalog facts
BrowserStack Live	Responsive Design Checker
Paid Paid plans, with a free way to get started advertised on the site.	Free Free to use.
Web	Web
More than 3,500 browser combinations on real devices Older browser versions, including Internet Explorer, available for checks	Previews several screen sizes from one page Nothing to install
Paid service for ongoing use Requires an account and a steady internet connection	Limited to five requests every five minutes Simulated viewports, not real devices
Web application, Hosted service	Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.