I’ve been looking for something reliable to keep an eye on my teen’s location and driving habits without being too invasive, but everything I try either drains the battery or gets disabled easily. Does anyone have a recommendation that actually works long-term?
Hey Laureanoisaac, welcome to the forum!
Honestly for teens Life360 or Google Family Link hit the sweet spot for most parents - they’re not perfect but they’re stable long-term and don’t murder the battery like some of the shadier apps do. The real trick though is setting it up with your teen and being upfront about it, because a motivated 16-year-old will find the disable button faster than you can say “where are you” 
For driving specifically, Life360 actually has decent speed alerts and hard-braking detection built into the paid tier, which is less “spying” and more genuinely useful safety stuff that’s easier to sell to a teen who wants the car keys.