Wordapp is currently not integrated with a native spell check.
Don’t worry, we’re working hard on it! Until then, we highly suggest you use Wordapp in Firefox.
Step 1: Make sure you have Firefox installed
If you don’t have it installed you can download Firefox for free from Mozilla’s site.
Step 2: Install the dictionary for your language
Go to Firefox’s add-ons’ page for dictionaries and download the dictionary (not language pack) in your language.
Step 3: Check that your spell check is enabled
Follow this list to make sure you are using spell check in Firefox correctly.
Questions? Please contact info[at]wordapp.com.