User blog comment:Mmpratt99 deviantart/Can anyone recommend a good free grammar and sentence checker?/@comment-4715955-20141231040611

Why not just study the language harder and consult the back of the dictionary? Spellcheckers and grammar checkers aren't a cure-all for writing mistakes. A program can tell you if you misspelled a word (thier => their), but usually can't tell you if it's the RIGHT word (using their instead of there / they're).