Friend just told me about this monitoring app and I feel weird about it

My neighbor was like "dude you gotta get Life360 or whatever, I know where my kids are all the time." And I get the safety angle but... isn't that kinda creepy? My 14yo daughter would absolutely lose it if she knew I was tracking her location.

I'm torn because I DO want to know she's safe but I also remember being her age and my parents being overbearing. What's the line between reasonable parenting and surveillance? Anyone use location tracking with teens and it NOT be weird?