Audio chat app Clubhouse raises undisclosed funding, valuing the app at $4 Bn
Clubhouse is an invitation-only audio-chat iPhone app launched in April 2020
Funding round was led by Andrew Chen of VC firm Andreessen Horowitz
Key investors like DST Global, Tiger Global and Elad Gil participated
San Francisco-based Clubhouse lets people discuss varied topics in audio chat rooms
The app is also known for letting users host their online radio shows
