As mentioned, you don't need anything, especially not something with a cost, like TuneUp Utilities. They serve no real purpose with Windows 7.
Run CCleaner to keep the reg clean, and manage startup items. It can also clean out temp files, but make sure you review the results before clicking to delete them. Run a good, light AV software package like MSE, and then keep a manually scanner as a second opinion, such as Malwarebytes Anti-Malware.
That's all you need, and doesn't cost you a dime.