There are many substitutes to choose from if you’d like to keep the consistency, taste or even texture of the dish relatively similar.
Pears and peaches are popular substitutes for apples in desserts. Papaya is recommended in salads.
Applesauce can be replaced with pineapple puree, or even pureed apricots, prunes and bananas, just be careful with the amounts used as some of the fruits have a stronger taste compared to apples.