There isn't a version of song collector for iPhone because it would be rejected by the App Store and there is not yet an option to side load to iOS. I've heard side loading may be coming to iOS to avoid legal issues for Apple so I will have the song collector ready when that occurs.
As a workaround, you can run the song collector in any decent Android emulator. A good example is Bluestacks which can be run on windows or intel powered macs. In the emulator, you can collect the songs and then share them via google drive or iCloud and import them on the iPhone.
