Unless I've missed it, there isn't a way to cleanly add meta fields to the admin backend for products. It has to be done via an app, which means data entry need

Unless I've missed it, there isn't a way to cleanly add meta fields to the admin backend for products. It has to be done via an app, which means data entry needs to be split between built-in Shopify fields and meta fields via a Shopify app interface on a different screen.