Sensor Tower: Naval Ravikant and Brian Norgard's audio-focused invitation-only social app Airchat has been downloaded 30K+ times since it relaunched this month (Priya Anand/Bloomberg)

Techmeme - Sensor Tower: Naval Ravikant and Brian Norgard's audio-focused invitation-only social app Airchat has been downloaded 30K+ times since it relaunched this month (Priya Anand/Bloomberg)