Will my apps still work on Iphone 4S

I don't wanna buy an iphone 5. I want to buy an. IPhone 4s. Will the apps that are optimized for iphone 5 with the bigger screen fit in the 4S or will it be squished in?

Most Apps are written for IPhone 4 / 4s
They are gonna have to be stretched for iphone 5.Id stick with the 4

The apps will probaly be written to adjust to the size of the screen They wouldnt suish it either, they would just make it smaller and put black bars. But seriously the apps will know what phone your using.anyway, all apps right now are pretty much for the iphoen 4s anyway.