Alex Smith, aka Alkex Instruments posted this preview of Mode Machines x0xb0x for iPad. Mode Machines is a German boutique synth manufacturer with experience making hardware x0xb0xes, and even more experience insisting that I do not qualify for a discount on a SID. Alex Smith has developed a lot of music apps, the most notable being chiptune iPhone app Bleep.
Among 303 clones the x0xb0x is probably the most user-friendly, so although there is already BassLine, bleep!BOX, technoBox2, ReBirth, Rhythm Studio, Tabletop, etc., this is a welcomed addition! Mode Machines x0xb0x for iPad is expected to be released within "days" and available for free.