We recently launched our app ConnectPOS Point of sale (POS) on Shopify app store.
It's a Shopify pos app with basic retail and omnichannel solutions that you might expect from a pos app, such as:
Here's the link to the app: https://apps.shopify.com/connectpos
It's currently working with PC, tablet and mobile, both Android and iOS.
In these first days, all we need is to have real users to use the app and give us feedbacks. So we are making the app completely free.
Is there anyone looking for a POS app? It'd be my pleasure to help with any questions or technical problems!