I have a jailbroken iPhone and my apps are missing?

Okay, so i jailbroke my iphone the other day, and i downloaded some apps from cydia. I put them in a folder, and then out again. The folder was empty, but still existing. So i reboot my device, and all my apps are gone. If i go to settings, general, about, it says that i only have 6.4GB available (just like before). But the application line is missing! What should i do? I've tried rebooting, respring, but nothing works!

Oh dear.