Word Book with Crossword app for iPhone and iPad
Caution: To use this app, you should set iCloud settings. (Words you input are saved in iCloud to prevent to lose data.)
This app helps a user studying words. You should input words you study, then, the user can study with example sentences.
And users can play crossword game to improve their English.
CrosswordsGenerator open source library was used to generate crossword. I appreciate it.