Gala Apple by itself?

I'm finding conflicting information on the internet on Gala Apples. I just bought my first and only apple tree, it's a gala. Will this tree produce fruit on its own? I would like to hear from someones personal experience, if possible.

A neighbor had planted a gala tree several years ago. It did not fruit until she planted another apple tree upwind of it. My grandparents though had only one apple tree and it fruited every season. No one else around them had an apple tree.

I posted a listing of some self pollinating apples here.

It is not a complete listing of self fertile apples.

I am under the understanding that gala is considered 'partially self fertile'. That means that the tree can set some fruit, but not nearly as many as if there was another (compatible) species near it.

A cheap crab apple nearby should do the trick.

Thank you for the replies!