Word List 2 app for iPhone and iPad

Words are listed which match a few known letters from a list of over 460,000 words. First, choose the number of letters in the words to find. Second, choose the letters that are known or included or leave as ? which means any letter or symbol will do. Also the space key is the same an "?" which means choose any letter. Third, choose the letters to be excluded or leave blank, such as "ardfj". Fourth, choose letters that must appear somewhere in the word or leave blank. Then for cryptogram puzzles, chose the letters that are the same, such as 1=3,4=10. Choose the letter that are unique, such as 2,3,4,5. Also, choose which letters may only be a vowel, such as 2,4. Then tap SEARCH to begin. For example:
Find words that are seven letters starting with ST plus the 5th letter is P. Exclude the letters Q. Containing an R, D somewhere.
Number of Letters: 7
Include: st??p??
Exclude: q
Contains: rd
SEARCH

Also, search for symbols such as "cant" or "eye-opener". The apostrophe and dash count as one letter, so search for all 5 letter words that includes "????" or all 10 letter words that include "???-??????".

Plus, there is an added bonus of a second list of words that are not in the primary list, yep, some real live words are actually not in the primary list! but, can be easily added for future searches.