it depends on the variety of apple - some are good storers, others not. When storing, you really need to ensure they are totally blemish free ... the slightest bruise or damage and it will quickly go rotten, taking the whole batch stored with it at the same time
![Sad :(](https://chat.allotment-garden.org/Smileys/green/sad.gif)
Another way to preserve apples besides cooking is drying - I peel, core and slice the apples into rings and then dry them in a dehydrator until crispy (about 8-12 hours depending on thickness) then store in air tight bags. Sometimes when I cook a stew, curry or soup, I'll break up a couple of rings and pop them in and they plump up nicely
![biggrin :D](https://chat.allotment-garden.org/Smileys/green/biggrin.gif)
You don't need a dehydrator to dry though they are more convenient - spread the rings onto racking and leave in a warm (not hot) oven to dry