Deleted corrupt app returns corrupt when reinstalled

[greatescape]

I have an app tat is corrupt. I delete it with the "x" and reboot. Then when I redownload it from app store it comes back just like it was before deleting - corrupt, exactly the same. Is something being held in cache that is not letting a
Fresh install occur. The app in the store is not corrupt as others use it regularly with no problem. Shoud I delete t from my iTunes accout also?