I want an app that hides everything including installer.app and there is way i use them..like there might be a really small dot on the corner of the iPhone or something. is there any software like this? if so what is it called?
You'll need two programs to achieve this. One is called Customize. In Customize, there is a feature called rSBT. Use this to hide all your non-Apple apps. The other program you'll need is Dock. This will allow you to access all your apps via a little sunburst that sits at the bottom corner of your screen.
Please note that the latest version of Customize is very buggy. So if you have 1.1.1, I would suggest holding off until a better version comes out. If you're still on 1.0.2, install an older version via iBrickr.