Yeah, mobile tracking apps are way more technical than they look. A dev friend once explained they run as background services tied into OS permissions, so after install they can stay active without a visible “open app” state. But what they can actually access depends heavily on what’s granted and the OS limits. I’ve tested a couple in the past and learned the hard way that clarity matters more than features—if the data logs aren’t transparent or verifiable, I don’t trust it. Battery drain and weird background activity usually tell you more than marketing claims.