[srgseg]

Any recommendations for a simple keyboard remapper that is compatible with Sierra? All I need is to swap the @ with "

[shabble]

Not sure if it still works, but the ~/Library/KeyBindings/DefaultKeyBinding.dict approach maybe?

I use it for putting # on the § key, and it's as simple as:

    {
    "\U00a7" =     (
        "insertText:",
        "#"
    );
    }

in that file. YMMV on >capitan though.

[OJFord]

Isn't one of Apple's UK mappings sufficient?

[srgseg]

Thanks for the tip - unfortunately that mapping changes too many other things on the keyboard at the same time.