Todd Ogasawara and Jon Westfall celebrate MobileViews Podcast 400. In this week's podcast:

• Surprise! Windows 11 is NOT popular
• In-app(car) purchases? The Aui Q4 E-Tron sync HVAC function
• Dyson Zone air purifying headphones NOT an April Fools joke?
• A college professor (Jon) wonders if Google's writing assistant will mask student skill levels when adjusting teaching for classes
• iOs 15.4.1 fixes the battery drain problem
• Looking back at "potential" podcast topics from 2014 that we didn't discuss back then. What is still around in 2022?