Once installed, LokLok allows friends to leave messages and drawings on each other's lock-screens. Two things seem certain: it will be great fun and it will all end in tears! SUBSCRIBE.

LokLok, as this latest app is called, replaces the Android phone's lock screen with a "synchronized whiteboard" that allows you to leave notes and drawings directly on your friends' lock screens.

LokLok is effectively a synchronized whiteboard, making it as easy as possible to share notes, pictures and random doodles with anyone. Without anyone having to unlock their device.

LokLok is an interesting messaging premise that brings messages to your lock screen. The idea is simple. You create messages using hand-drawn text or images and those messages appear directly on ...

Pursuit of APPiness features impressive apps from around the world that have impressed us by their use case, UI or UX. Check out Loklok, Periscope and Giphy for messenger.