Words With Friends And Scrabble
The Words With Friends app typically exists here: ~/Music/iTunes/iTunes\ Music/Mobile\ Applications
Copy the Words.ipa file to a temporary directory. Very likely it will have a version number after Words. The .ipa file is a zip file archive. So you can do this:
unzip Words.ipa
This will create a few files and a directory called Payload which has the app.
cd Payload/WordsWithFriendsPaid.app
Here you will find a text file called 'enable1.txt'. This is the dictionary that is used by the app. Copy this file to a safe place and you can delete all the rest.
With this dictionary/text file, it is easy to generate stats and word lists of interest.
wc -l enable1.txt
173098
perl -lne 'print if length $_ == 2' enable1.txt | wc -l
105
perl -lne 'print if length $_ == 3' enable1.txt | wc -l
992
perl -lne 'print if length $_ == 2' enable1.txt > 2.txt
perl -lne 'print if /q/' enable1.txt > q.txt
perl -lne 'print if length $_ < 5 and $_ =~ /z/' enable1.txt > z.txt
perl -lne 'print if /^j/' enable1.txt > j.txt