If no one here replies you might like to ask over on the Harvest Forum which "covers everything you do with your bounty after you harvest, such as canning, preserving, etc, as well as the harvesting itself."

No need to freeze dried apples, [I've never seen it done] ...keep them in a air tight container, I use honey pails which have a double seal...good for a couple of years, remain crunchy, probably it helps when you dry them very dry, [like them crunchy] and are in a dry climate which we have.

These Norkent from 2014 stored in honey container.

You probably get more answers here since more people grow apples.