I’d love to buy the program, but only if we will have a Spanish dictionary for spelling and grammar.
Any plans of incorporating it soon?
Cheers
Scrivener just uses the OS X standard dictionary, so it already supports Spanish. 
Thank you very much for the quick reply, my friend! I’m a bit of a computer idiot, could you tell me how it works? What should I do to make sure the grammar check will be in Spanish? The more I check the program, the more I like it!
Cheers! 
No problem. If you go to Edit > Spelling and Grammar and then select “Show Spelling and Grammar”, a panel should appear. At the bottom of that panel there is a pop-up button from which you can choose the dictionary language. Normally this should use the default system language anyway, so I’m surprised it’s not using Spanish already if your system is set up to use Spanish as the main language, but try changing it there and hopefully that will do the trick.
All the best,
Keith