Sum of shopping list items 🛒

Based on your feedback, I've added a new feature that automatically totals items as you add them to your shopping list.

This makes it easier to see the total amount of items you need to buy.

The summation is based on the ingredient name and the unit.
For example, if you add "100g potatoes" and "200g potatoes", it will sum up to "300g potatoes".

I hope you like it. Happy shopping! 🛒