If the first picture definitely is codling moth, you should roughly estimate what proportion of your crop is being lost. If only 10 per cent of your apples are affected, it is not worth bothering about.
Round here we lose 40 per cent on unsprayed trees, so reluctantly I spray and it works.
I have tried most other actions and for me they don't work. I did cut my losses to about 25 per cent by picking up every early-fallen apple the day it dropped and ensure it never went anywhere near a compost heap. This was only partly-effective but it was low-cost.
If your tree is too big to spray, how do you achieve the other management requirements i.e. pruning, thinning and picking? Do you have no fungal diseases (scab, canker)?