Sync with the POs works with a split signal: the left stereo channel transmits only the sync click whereas the left channel only transmits mono audio (or vice versa?). That means you can’t use Korg Sync Control as you can’ change the pan position of it to ‘100% left’. You would need a mixer app with pan settings for that. I am not aware of such an app, but maybe another commenter is.
However, I see two ways to sync the POs to iOS:
Use only apps with an internal pan setting. Use a drum machine app to create the sync click on the left channel (a short pitched up rimshot like sound should do). Play all other sounds on the right channel (or vice versa?).
Use a second iOS device and at least one app that uses WIST (like iElectribe or Gadget). Use one device to create your sounds. Open Korg Sync Control on the other one. Sync the first device wirelessly to Sync Control (Thats what WIST does).
I hope that helps.
i have been using method 2 with great results.
Many hanks for the reply TTS!
As soon as you use any sync on the POs, the signal is split and all audio is mono.