It's great to hear that you're enjoying the latest POS update we rolled out and thank you for sharing that feedback! Many of the updates we make across the platform are made with merchant feedback in mind, and I know integrating loyalty apps with the POS checkout was a popular request we received.
I also wanted to let you know that further changes are set to be made later this year, with the POS set to receive a full revamp that will make the checkout process faster as well as further extending the integration of apps with the POS system. You can subscribe to monthly updates on the rollout of the new POS system via that link.
Thanks again for reaching out!
Victor | Shopify Social Care