Less actions to make these actions = happy user

For some reasons you are suddenly not logged in and then the synchronization does not work unnoticed. A note while starting the app in the case I am not logged in or a flashy sign would be very helpful.(maybe configurable for those who do not need the synchronization).

Someone signed up for an account using my email address, so an account deletion option would be useful. :)

I’d like to be able to add items to my generic shopping list and have those items associated with a specific list.  The issue this solves for me is that my whole family uses Buy me a pie, and frequently adds items to the wrong list. For example, when my wife wants a roasted chicken, she puts it on the grocery list, but I want it to be on the Costco list. 

Application notification icon is completely non-intuitive. It looks more like 3.5" floppy disk than a grocery shopping bag.

I suppose this "square with a square" was intended to signify a shopping bag?

You should change it to something more recognizable.

For example a grocery shopping basket as shown here:

Or a more realistic shopping bag picture like this:

or one of these:

I understand that you tried to be closer to the application main icon. But it does not actually work.

The main icon too needs a makeover. Especially on Android. Skeuomorphism is soo 2012.

Adding items by mail would be great, e.g. sending items to your own buymeapie mail like add-to-bmp-39dnq093nf0@buymeapie.email would be awesome. This way everybody could build his own IFTTT applets to add items via Google Home or other assistants.

Have you considered to add a loyalty card to a shopping list? Would be useful to have this on hand after completing the shopping list at the cashier checkout.

That way I can add a recipe with instructions to the shopping list and vice versa. The end result is a one-click and you have a shopping list for that dish!

If that is implemented then you could add the ability to click on multiple "recipes' and build up a shopping list that will encompass all needed ingrediants!

It is great that you support Alexa for Buy me a Pie but a least for me it does not work to add an item to a specific list. Alexa always says that the list could not be found.
Adding one item works sometimes but only adds it to the newest list.

Half the time I say "Alexa, open Buy me a Pie etc.." Alexa tells me what the Number PI is... ;)

There is a new API by Amazon to get the content of Lists like the Alexa shopping list. Maybe this would solve some of the problems?
https://developer.amazon.com/de/alexa-skills-kit/shopping-and-to-do-lists

Thanks in advance!