How to make free custom ringtone for iPhone 4? That’s the hard way to make ringtone for iPhone. But you can create iPhone ringtone the easy way by using WinX iPhone Ringtone Maker from Digiarty Software. With it, you can convert almost all audio formats, e.g. MP3, WAV, WMA, OGG, AAC, MP4, M4A, FLAC, FLA, MPC, MP+, MPP, AIFF, AC3, APE to iPhone ringtone file.