itunes doesnt tranfer apps

i open the itunes media folder and see that there is alot of apps that doesnt in my itunes. so i click on open and chos open with itunes, now it show that it in my ipod but it not and it doesnt tranfer from ipod to itunes or from itunes to ipod. it shows that the app remove or install but in my ipod it not show. help please?😢