Is there a cleaner for the iPhone 4?

I noticed my iPhone 4 is lagging and was wondering if there was a cleaner that I could use after I delete an app and stuff like that

You don't need any of htat. Occasionally make sure you close out all open apps (double tap home button, hold down until X appears, and tap to close… Those apps are all open).

Yes there's. Its called 370 mobilesafe. Download it from bigboss repo and its free too!

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