I'm curious what device data is sent from the app. Are they using any private APIs to extract data from mobile users as well? That would be even more insidious,

I'm curious what device data is sent from the app. Are they using any private APIs to extract data from mobile users as well? That would be even more insidious, since it's hard to analyze that. I tried decompiling the Android version of the app, but I'm not a mobile dev and don't know where to look to analyze its data collection behavior. I also considered using mitmproxy (like the OP) to analyze transmitted data from the app on my phone, but I'm on a university network that blocks inbound connections to devices (so I can't connect to my laptop from my phone). Hope somebody else can publish an analysis.