Both the free and paid versions of Recipe Convert have been updated with more user interface changes as well as bringing both versions to the same level of functionality.
The Fraction/Decimal display selector got a graphic overhaul, as did existing menu items. There has been the addition of a new menu item as well.
This new feature is the Gas Marks Chart, added at user request. Find out more about gas marks at Wikipedia
The new styles and color scheme were chosen to improve legibility, especially on the reference charts.