CassandraCroft posted... I had no idea myself but after doing a wikipedia search I got the answer:
YouTube Vanced (or simply Vanced) is a discontinued, modified third-party YouTube application for Android with a built-in ad blocker. Other features of the app include SponsorBlock, background play, free picture-in-picture (PiP), an AMOLED black theme, swipe control for brightness and volume, and the ability to restore dislike counts on YouTube videos. A YouTube Music version of Vanced was also developed.
The name Vanced originates from the word advanced but with ad removed, in reference to the software's ad blocking features
On March 13, 2022, the developers of YouTube Vanced announced that the application would be shut down after they received a cease and desist letter from Google, which forced the developers to stop developing and distributing the app. Although the app will continue to function for users who have already installed it, the app will likely stop working at some point in the future without any further updates.
https://en.wikipedia.org/wiki/YouTube_Vanced
Hope it helps.
Oh, it's something for android users. lol