On iOS you'll also be tracked 24/7 by Google if you have Waze installed. Hiding behind the "being a traffic crowdsourcing app, we need location data from everyo

On iOS you'll also be tracked 24/7 by Google if you have Waze installed. Hiding behind the "being a traffic crowdsourcing app, we need location data from everyone" it doesn't allow you to use the location sharing option "while using the app", it's either always or never. And there's a purple arrow next to it each time you're driving, a sign that it's currently tracking you, even if the app is closed. (Gray means past 24h). Probably they use accelerometer data to know when you've started driving.