14 DAY TRIAL // As revealed in a blog post on iFixit's official website, Apple has banned their developer account and consequently removed the associated iOS app from their App Store.
According to iFixit, Apple contacted them via e-mail right after they published a teardown of a still unreleased Apple TV 4th generation unit sent for testing purposes and said that their developer rights for all Apple platforms have been halted because they infringed the developer agreement.
In the e-mail they got, Apple stated that iFixit's actions "actions that may hinder the performance or intended use of the App Store, B2B Program, or the Program."
Kyle Wiens said that Apple's move was a thing that the iFixit team was prepared for, and they weren't surprised at all when it actually happened just a few days later after the teardown was published online.
Although their app was removed, iFixit published their APIs so that any developer can build another (better) app for iOS users
However, according to iFixit their iOS app was already obsolete and needed rebuilding from scratch because Apple's iOS 9 update added a number of serious bugs to the app.
Given that they don't intend to provide another iOS app, iOS developers can build their own using iFixit's public APIs, as long as they respect the license and don't fill the app with ads.
At this moment, asking for others to respect their license is kind of ironic, but at least they were generous enough to provide others with the means to add some version of the iFixit app in the iOS App Store, sometime in the future.
Until a kind-hearted developer with enough spare time on his hands decides to create a new iFixit application, users can still hunt down troubleshooting tutorials and repair guides for iOS devices on their website or by using the iFixit Android app.