I will rethink the order of cards and recipes and maybe there is a place for recipe difficulty.
There is some lag on slow phones (< 11 android). And I already separated render for fast and slow systems. It's all about resizing cards. For some reason Chrome renders it badly along with the scroll. I will remove the resize and redo the render and it will work smoothly on all phones. Especially as pwa application.
Yes, I will add quantities for the ingredients and in general I will completely redo the recipes. Right now they are more like a mock data.
The competition comes from my desire to build many features at once in one application. Perhaps it should be removed and added when there is at least a certain number of users and more understanding of what and how to compete.
Sync is inspired by my desire not to scare user with a login and to give easy access to the account.
I see the groceries list as a dataset. I love the idea of adding a set of products from a recipe to a shopping list or buying new groceries to unlock cards.