That's correct. Nothing else available from Foreflight. Please write them and request it. That's how things get prioritized.
I mostly use Air Nav Pro in Mexico, but only for VFR. My plane isn't really capable of flying IFR in the mountains and I don't think approach plates are available anyway. My buddy, another air nav pro user, recently bought the jep charts which further supports the notion that air nav pro doesn't have them.