Stacker is the best, fully automatized and reliable compression system for your device. Stacker software doubles the size of your entire drives and works invisibly behind the scenes. When you start any compressed application it becomes decompressed in background automatically and it becomes compressed again when you close it. Stacker is the best way to increase disk space on your device, it guarantees to give you as much disk space as possible without you even thinking about it! An award winning file compression utility for your Nokia S60 phone.