I have wild farm apple trees, and crab apple trees, and in the past always had a bountiful crop, but back I rarely did anything with them.
Then I started to use them. Some were tasty, some, well, nasty!
The more I used the apples, then the less crop I had!
I was making apple juice from some. It was like no other apple juice I ever saw or had. It was tart, and had a reddish / pinkish hue to it. I LIKE it a LOT! And would freeze it so I could meter it out over time!

I think for the last 4 years in a row, a crop been nonexistent!

The crab apples are more tolerant to a freeze and always have a crop. I been wanting to try and make crap apple jelly, but have not got around to it yet.