I am trying to design an ecommerce iOS app. I want to show the list of categories, sub categories and the products in just one screen so that I don't have to navigate from one screen to another.
The app has around 10 categories followed by 6 sub categories followed by n no. of products.
For iOS apps, drop down is generally not suggested from what I have researched. Plus, with so many products, I don't think drop down will be a good idea.
Can anyone suggest how can I achieve this ?