Lg g4 Invalometer Or Time-Lapse application for night photography ?

Guys I need an application to take pictures AUTOMATICALLY. I mean I want to set the shutter of camera 30" and when it takes the picture,it will start automatically to take another shot. Something like time-lapse ( Invalometer ).. ( Except the camera FV-5 ):confused::confused::confused::confused::good::go od::D

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