iPhone MIDI app for backup purposes

As a way to backup OP-1 sequencer data on the go, I’m searching for an iPhone app that can (1.) record OP-1 MIDI output through CCK, (2.) feed the data back to OP-1 via MIDI eventually (I know it can’t program the sequencer) and (3.) possibly save the recorded data as a MIDI file

I’m not searching for full fledged DAWs like Cubasis or the like.

I tried DM1, which worked in principle but doesn’t accept the whole note spectrum, only a programmable subset. And it can’t save MIDI files.