Before I buy, does poke work ?

Hi,

Before I purchase I wanted to check, does poke work like any other messaging app on Android where I will get a notification pop up a the top of the screen and in the lock screen ?

Basically I want the app it so if any action is going on, I will see a notification I got a poke on my phone and know to go to my pc.

Thanks,

Tony

Before I buy, does poke work ?