This Week in Apps: Spotify debuts a Clubhouse rival, Facebook tests Audio Rooms in US, Amazon cuts Appstore commissions

Welcome back to This Week in Apps, the weekly TechCrunch series that recaps the latest in mobile OS news, mobile applications and the overall app economy. The app industry continues to grow, with a record 218 billion downloads and $143 billion in global consumer spend in 2020. Consumers last year a…