Long story short, my girl's little sister has been acting up and disappearing randomly. Her parents, who own the phone, want to install a tracking application - they also have the legal right to do so. I'm not here for a bloody parenting lecture, so don't tell me to take the phone away or use some good old-fashioned discipline, or whatever. It isn't my place to tell them how to parent their child, so if it's a tracking app they want, a tracking app they shall get.
I've looked at SMS Tracker, which doesn't seem to bother hiding itself. I've looked at Flexispy, and a few others. None of these apps list their prices, and most of them seem like scams. Is there any reputable one that you can recommend?