Apple nixes iOS version of popular brightness management tool f.lux
An Apple representative, Richard Chipman, told f.lux co-founder Michael Herf that he wasn't allowed to turn either Xcode or the iOS SDK to f.lux's purpose, Re/code explained. The app uses private APIs, which are strictly banned at the App Store — to get around this, however, Herf and his wife let people sideload the app for free via Xcode.
"The last six months of 'sideload' press — which Apple didn't try to stop — had convinced us that Apple would be receptive to an approach like this, but they seem to disagree," Herf commented. "I asked [Chipman] about open source used in a similar way, and he did not answer clearly, but he kept repeating the party line that we should make apps that could use public APIs."