I need to check my iOS app version on iTunes. If a newer version is available, I want to show UIAlert. I don't want to store version number on my server, because a newer version can be available at any time.
Is it possible to check my app version on iTunes?
Yes, it is possible.
Have a look at this very recommendable open source library for iOS and Mac OS X: https://github.com/nicklockwood/iVersion