Atbalss is an app for two people with nothing to say in it. You pair once, and from then on a single ball goes back and forth between your Lock Screens.
When the heart is on your Lock Screen, tap it and it goes to your person. When it is on theirs, you see a faint dot, and tapping that sends a small nudge. Most of the time the widget is simply blank, and the heart turning up now and then is the point.