I actually got mine in the mail today from the last time they were here. So far, so meh. The first trick is finding the app (Tracker Sticker, not “Tracker”) in the Play store. The next trick is registering, which can (apparently) only be done from your Android/Apple device, not through their own website. And their website has NO support, just the product demo video. And the app keeps telling me that my tracker isn’t registered, so it won’t show it to me on the map. And I have no idea how to register the tracker, since neither the app nor the website has any instructions. And I just tried the “leash” function. It does not appear to work.
I found that the “SticknFind” app works better with these than the “Tracker Sticker” app, which would not even pair with one of the two stickers I bought. That said, even the “SticknFind” app has problems. It keeps sending random “Tap alerts” to my phone that never stop playing until I manually stop it. I cannot honestly say this product works as advertised. The map app is useless because of the short range and the radar app cannot accurately tell you what direction the object is.