Folks -- You can't get something 'for free' -- you get it free. Using the word 'for' implies an exchange. EG: I will give you two of these FOR one of those. Since you can't give anyone a 'free,' inclusion of the word 'for' is incorrect. Therefore, "Evernote is available FREE on iOS, Android, BlackBerry, and Windows Phone, as well as versions for both operating systems (Mac OS X, Windows) and browsers (Chrome, Firefox, Safari)."