The Pestle app is pretty great. It's not cheap, and is Apple only, but it scans text, scrapes most recipe websites, does unit/portion conversions, can produce aggregate shopping list for multiple recipes.
This seems more like what I am looking for. The low tech solutions are great (text files and paper) on a personal level but are horrible for sharing and editing with family. It's too bad about the apple lock in, is there was a way to export to a friendly format like PDF or markdown? (In case the app ever shuts down)
The two export features I see are individual recipes to PDF, or all of your recipes to JSON. It would be nice if it could make a personal cookbook to PDF!