It is equivalent to a post-it note on a mobile phone. This software introduces the traditional concept of "throwing a note" into the mobile phone application, which can bring you a kind of fun and excitement of random discovery. You can stick a note at the selected place. When you pass the preset place, the post-it notes will trigger the push, reminding yourself, family and friends what to do when you arrive at this place, so as not to forget to pay, shop, visit customers and other things, just like the post-it notes on the mobile phone.