This tracking device really surprised me! First, it's pretty well made and very easy to set up and use. No apps are required and my phone (Note 9) holds up with no issues. I had to take it out of its case but depending on the size you might not need it. The motion tracking really surprised me. It works very well and was able to track me without any problems. Seriously, if you're looking for a device that won't break the bank, then this is it! Again, I'm very happy with the tracking device that doesn't require an app!