The discreet icon is one good thing that Grindr has over other gay dating apps, but it's missing some aspects. It does show the discreet icon in the app tray, home screen and the notification bar. BUT as soon as you pull down the notifications to expand the list, there it is - the original Grindr icon. It also shows up with the original icon on the lock screen. In order to avoid this, we'll have to silence or stop Grindr notifications, which totally defeats the purpose of the discreet icon. If you already have invested some effort in this, a little more effort to make it completely discreet would actually make it effective.