iOS has supported ALAC (Apple Lossless Audio Codec), I think since day one, but at least for a long while. You can convert FLACs to ALAC without any loss in qua

iOS has supported ALAC (Apple Lossless Audio Codec), I think since day one, but at least for a long while. You can convert FLACs to ALAC without any loss in quality obviously, but the coding tends to be a bit more efficient for FLAC.