Welcome back to This Week in Apps, the TechCrunch series that recaps the latest OS news, the applications they support and the money that flows through it all. The app industry is as hot as ever, with a record 204 billion downloads and $120 billion in consumer spending in 2019. People are now spending three hours and 40 minutes per day using apps, rivaling TV. Apps aren’t just a way to pass idle hours — they’re a big business. In 2019, mobile-first companies had a combined $544 billion valuation, 6.5x higher than those without a mobile focus. In…