Eyefood Factory Switzerland
The dev team managed to fix the app and it is now working very well.
It is an App with a great potential as it is one of the only focus on the POS side of Shopify, and so will not mess up your online store with any integrations.
The fact you can define a free km radius and then a cost per km above is really convenient. You can still apply a discount on the Shipping Item that will be created by the app if you want to offer for free the delivery (big order for example). Great option.
The dashboard in Shopify is quiet simple and so easy to use. You can mark the delivery in progress, perform or cancelled. It will be nice to have a translation feature in a near future especially because the item created by the app in the invoice is in English and the name cannot be edited in POS or Shopify.
Great app and great dev team.