Which apps are you referring to specifically?
Initially I was only able to get the FP-30 Bluetooth working with Garageband by going into the Garageband's Bluetooth settings and turning it on for the FP-30. Logic may also have this setting but I don't know it well enough.
When I reset the machines - neither my Macbook Air, iPad Air or iPad 3 could see the FP-30 in MIDI mode (though oddly enough, they saw it when I switched to the Bluetooth Page Turn mode). None of the other apps I tried have a "Bluetooth" setting to turn on, so I was kinda stuck there. After installing the Korg app/drivers, both devices are only too happy and eager to tell me that there's a Roland FP-30 in the house.
Though like I said, my older iPad 2 still won't see the FP-30 even with the Korg software installed. But I can't really say what the exact problem was. It may just be something fiddly with the Bluetooth MIDI settings in Mac OS and iOS, which I'm sure will get sorted out with some future update.
I tried several synthesizer apps, then Logic, Ableton, Fruity Loops, Piano Maestro, Piano Marvel, Note Trainer etc. and they are all now plug & play with the Bluetooth connection - just as if I had used a USB MIDI cable.