No, there is no need to install any software or code on the website or app that you are testing.

Testers access your website and/or app natively on their device. The videos provided to you include a screen recording of everything that the tester sees, as well as the microphone recording that captures the testers' thoughts spoken out loud.

Testers have pre-downloaded and installed a Chrome browser extension for PC tests or an iOS/Android app for mobile tests that screen and microphone record while testing.