A couple years back I planted the Lil Bigs apple trees. I was supposed to get apples my first year. Didn't happen, never did get apples from those 2 trees. I just gave up on them.
Apples require cross pollination from another variety.
I have a Jonathan and a Winesap.
That's why my peaches and plums are the same, but the cherries, apples and pears are not - 2 different kinds.
The self pollinating fruit can do it themselves.