DesignByPaul released AN1 Analogue Groovebox. Like most of Paul's apps this one does not appear to have any useful connectivity. Which is a shame, and would usually disqualify it from being featured on the site, but a joke occurred to me when I saw the awful demo video.
AN1 Analogue Groovebox App Store Description:
AN1 is a fun groovebox comprised of 3 analogue synths with integrated sequencers and onboard effects. AN1 exposes all synth parameters with a one knob per function paradigm, allowing for quick, fun and intuitive real-time manipulation and creation of tunes and sounds.
— 3x VA synths
— 2x LFOs per synth
— 3x 16 step sequencer
— Effects: delay, reverb, chorus
— Note frequency quantize
While AN1 Analogue Groovebox cannot be run on an iPhone, DesignByPaul can't record on an iPhone either!