WordKit

Wordkit is letters and word cruncher. It has over 140,000 words in the wordlist with support for UK and US variants. There is no need for network connection as all data access is handled locally so you can use it on planes, trains and amenities without worrying about network availability or cost.
WordKit allows you to Check Spelling, Solve Anagram, Find Words with partial information and make words of word lengths of 3 or higher.
WordKit is great for solving crossword puzzles and playing word games like Scrabble. Solve anagram with ease. Use '?' as missing letters to solve crosswords. Build longest words from a list of letters from a scrabble / countdown game.