Google Duo was Google's video calling app, launched in 2016 and later folded into Google Meet in 2022. Its default incoming call sound became familiar to millions of Android and iPhone users who heard it daily. As the app faded, the ringtone survived online as a nostalgic sound effect, shared on soundboards and reused in memes, prank videos and edits. People often compare it to a discord call tone because both signal an urgent incoming connection, and that instant recognition keeps this ringtone in circulation long after Duo itself disappeared.