Box.net is offering iOS users 50GB of cloud storage for free, for life. The deal recapitulates a similar offer the company made for TouchPad owners, albeit to a much larger audience this time around as Box.net presumably is trying to get a little of the iCloud, iOS5, and iPhone 4S attention sent its way. To get it, users simply need to install the latest iOS Box.net client and sign in. Box.net will be offering the deal for the next 50 days along with an increased file-size upload limit for 100MB instead of 25MB.