PetTracer has been brilliant with my cat, relying on GPS instead of cellular data which is poor in my area. I can see where my cat is at anytime. Only recommendation I have is that it would be useful to have a beep in built in to the collar when they lose it, which mine often does due to being in cat fights. Gets quite hard to find the collar in a bush without it. I have combined this with a tabcat finder and the two work so well together. I love the app and being able to find him when we need to get him in. It also doesn’t bother him one bit as it’s so light!