Spelling Monster is an iPad app (free and paid versions available) that students will enjoy using to practice spelling words. On Spelling Monster students can create their own lists of words or use lists shared with them (sharing only available in paid version). The app contains a half dozen games through which students can practice spelling the words in their lists. Spelling Monster keeps track of the number of times a game is played and the percentage of words spelled correctly.
Students do not have to create an account to use Spelling Monster. The app can be used without a connection to the Internet.