If there is an app that I use on my Mac and iOS devices for the shopping list, this is Buy me a Pie. Surely you already know it since it has been in the application store for Mac for almost a year, so this is not a new application, but it's worth every euro it's worth.
In my case I've been using Buy me a Pie for a long time, on all devices and it is true that the Mac application is the least attractive in terms of the interface, it has not been modified or updated for too long, but it is no less useful, on the contrary I would say and it works very good.
Free trial Buy me a Pie
We have a choice of try the app totally free for a while in its web version and this is great to see how it works and above all to show you its potential. It also has the web format from which you can manage and create your shopping lists shared with the iPhone or iPad. It is really worth it.
What we will achieve with Buy me a Pie is to save time and money for the shopping list. If you have an iPhone, iPad or any type of smartphone, the application allows you to share shopping lists in a simple, fast and efficient way. When you buy a product and remove it from your shopping list, it will be removed from the rest of the devices, always giving you a notification. The truth is that synchronization system between devices it's really nice.