We try to maximize simplicity, we do not put many functionalities for this reason.
You can use the same user code in several applications at the same time to create the lists together. You can also create the lists and share them as text via email or via WhatsApp, for example.
Now you can optionally put prices and quantities.
It is very easy to use.
Free and without Ads!
You can also use the same user account with the same shopping lists on windows, mac, iphone .... installing it via the web: www.lista-compra.com (it is a PWA or installable web).