After making sweet potato puree for my baby, now I make apple and pear puree (separately).
I use red Washington apples and green Packham pears. I can get about 4 oz of apple puree from one medium apple and 4 oz of pear puree from one medium pear. Always wash the fruits thoroughly and skin them before cutting.
For young babies (6 months) or babies with sensitive tummy, it is recommended to steam (not boil) the fruits first. When they are older (more than 8 months), you can blend them directly without steaming. However, it's still up to you and your baby's preference. Some babies can eat raw blended fruit with no issue.
Note: For step-by-step about how to use the steamer and blender, you can read my sweet potato puree post (link above).
Here's how I store my puree. I bought baby storage cubes. Each cube can store up to max 40ml / 1oz of puree. After the puree cools down, I pour them into the cubes before transferring them to the freezer.
Adults can eat apple puree too. I love ice cream with apple puree. :)