Generally it's good. However I'd like there to be an option for entering a word as whole  before you 'enter' it officially. There are many times where I get dinged from having a perfect puzzle because I knew the correct answer  but typed a wrong letter. Usually this is because of the smaller keyboard; my finger hit the letter next to the one I intended to use. Of course  using this whole-word option would mean all boxes may be wrong if you're wrong  and that's fine. In addition  sometimes it enters a letter twice  like a keyboard glitch or something. This doesn't happen often  but enough that this reason also prohibits me from having a perfect puzzle. On a rare occasion the second unintended may be correct  but generally it isn't. Also  once a correct letter is entered  it'd be nice if it couldn't be erased or backspaced over for those times when I have no idea what the word is and have to 'brute force' letters to get the correct answer.
March 17 2017