The Rewire Security SpyTrack Nano is a very good option, our review is here: kit.honestjohn.co.uk/reviews/review-spytrack-nano-.../

The Nano has a companion app that integrates Google Maps and the topography can utilise satellite imagery if you choose. Using the desktop site you can set up ‘geofence zones’ that allow you to place markers on the map so that if the tracker goes outside of them you’ll be alerted. Aside from that, you can set up alerts if the tracker moves or travels beyond a certain speed. If you want to track a car, you’ll need to buy the optional magnetic case to make it fully waterproof and stick it in the wheel arch. The case costs about £25. Or for a fiver less you could buy an official car hardwire kit. That’ll also prevent the battery from running out. On that basis, it’s very cost effective.