I just checked this out and it is very interesting. Can we use this free developer account to load our B4i apps on our iPhones/iPads?
http://9to5mac.com/2016/03/27/how-to-create-free-apple-developer-account-sideload-apps/
Your Apple ID now works as a free developer account. As stated at the outset, this account can be used for sideloading apps via Xcode. You will not be able to submit apps to the App Store, or download iOS, OS X, watchOS, or tvOS developer betas. A $99/year paid developer account is still required to enjoy those privileges.
http://9to5mac.com/2016/03/27/how-to-create-free-apple-developer-account-sideload-apps/