Thank you. Base isn’t as specialised as Core Data Lab, but if your Core Data file is in SQLite format, Base should be able to open it without trouble. The icon for Base is stone column split into three, like the standard database symbol of three stacked cylinders.

having been through so many cycles of this over the last year I would like to join that group! A phrase I keep repeating to myself: “using AppKit is not a failure”. Hopefully it is true.