I tried something similar a few years ago (and ended up giving up). Numbers in particular feels great to work with as an interface, and I had the idea that I could use a Numbers sheet as the backend for a local application (sort of like a more usable, smaller database like Bento or File Maker).
It'd be nice if Apple opened up these tools for better extensibility, would give power users a nice blend of usability and power.
mackross•5h ago