The main use-case would be to better coordinate within the family for which items have recently been bought, and without having to worry about older history.

One simple implementation for this would be to allow to auto-delete all crossed-off items after N days. Since some people might use crossed of items in different ways, it would probably need to be configurable, and since different lists can have different deadlines it would probably need to be configurable per list.

Other solutions that help solve the same use-case could be considered instead. However, for me at least, the simple solution would suffice.

Первый список покупок должен быть наверху списка. Это логично. Старые списки должны быть всегда на виду, они основные. Или добавьте напрвление в настройки

Change font to be bigger or smaller

Можно сделать название категорий в добавок к цветам. При вводе нового продукта который например относится к категории "хозтовары" приходится пролистывать список товаров чтобы вспомнить какой цвет был присвоен этой категории. Очень не удобно.

From now, it's possible to define a classification for item in a grocery based on a color and a naming. It's not so userfriendly because it's not natural to do that association. So, it would be much better to be able to define a classification based on a picture, a naming and ground color. The pictures could be provided or as our choice because sky is the limit in classification naming.

If you're creating a shopping list for a particular recipe then you may want to buy several meals for the upcoming week. If you're able to combine them into one list rather than go into each list individually it would be far easier and better user experience.

Sometimes products are organized differently in different stores. I might like it to be Blue on my grocery list, but Green on my Target list.

I need a few more color categories. Ultimately, if would be cool if I had enough colors for every isle of the grocery store!