What are the limitations of apple-based weapons and construction?

In short : how far can you technologically go, (mainly concerning building and weapon) having only an unlimited amount of apple?

details :

• About apples :

1) You have an infinite supply of apple, to be exact you have an infinite supply of the same apple, down to the atomic level.

2) Leftover pilling up will not be an issue since you can get rid of them the same way you can get the apples.

3)The apple is a granny smith which still have a peduncle.

• About the setting :

This takes place in a flat world made of something really hard and not reasonably scavengable.

The ground extend really far away and there is no relief whatsoever.

There is a small group of human (~10 peoples), who are "clean" in the sense that they carry no foreign body , have no disease, and a skin completely void of alien bacteria

Also this group is the only living thing on this place, wich mean that apple probably won't rot (if my understanding of the rotting process is correct)

• About manpower and knowledge :

the amount of knowledge and skill of the group is state of the art in whatever you may need, but it don't extend to impossible end (you can't do magic and the likes) one of the oblivious problem is the total lack of tools , unless you can make them out of apples.

you can also technically use human waste and stuff like saliva but those kind of thing don't come in with infinite supply since you only have an handful of people.

• About tree :

I am conscious that you may technically be able to just grow trees out of the apples using other apples as a fertilizer but there is 2 problem for this:

1- trees are long to grow, and even if you can effectively plant an infinite amount of them you won't have anything really usable for the fist few years (or generations if you want good solid wood)

2-I am not even sure that tree can grow out of just that, like, can you really make a tree grow on a solid surface with only apple and small amount of apple-based fecee(since human can provide that)?

• detailled question :

i would like to know what kind of building and tool/weapons you can craft in this setting (especially during the early years since after it just come down to what you can do with lots of wood (if, of course you actually can grow trees in this setting))