# Supported browsers
We carefully test our code on the two latest versions of every modern browser, on both mobile and desktop devices. In addition to running unit and end-to-end tests, we focus on two factors that are crucial for all users: performance and accuracy of the user interface.
# Testing compatibility
Tests are run in BrowserStack (opens new window) as well as on a limited number of physical desktop and mobile devices. Access to physical machines gives us an opportunity to measure the performance better which is hard to do with virtual machines.
# List of browsers
|Desktop Browsers||Mobile Browsers|
|Firefox||Firefox for Android|
|Safari||Firefox for iOS|
|Edge Chromium||Safari iOS|
|Internet Explorer 11*|
*We plan to drop the support for Internet Explorer 11 in the future.