Whether pdf reader and ms office reader available for free in apple app store?

I'm thinking of iPhone 5. Shall I store, retrieve & read PDF & doc files in iPhone without using data connection, as conveniently as I'm doing now in android?

The iPhone 5 can retrieve (download?) store, and read PDF files and Word's Doc files, as well as any Android Device can, as these features are included with iOS 6, no download required (but an Internet Connection is).

But, the iPhone 5 uses the iTunes Store, NOT the Mac App Store, so talk to your iPhone Provider to get your facts straight. Your question really doesn't make much sense. What do you mean by "without using data connection"?

And, Apple's iOS 6 does NOT use Adobe's ultra-buggy Flash Player. Instead, it uses HTML5 (the planned replacement, for Flash because Adobe refuses to fix Flash Player), whenever possible.

TIP: Stay away from iOS 7 BETA, until the Final pre-release in late 2013.