Empower does have an on device dictionary as does LexSpell. Both are very nice products, the difference between the two is Empower gives you the additional feature of spell check as you type where LexSpell allows you to spell check on demand. Another difference is LexSpell only works in the email and memo pad application. Both dictionaries are limited by file size, and when I have a really odd word to check, I still use BBCorrector, which is server based, but utilizes Google as its dictionary, and therefore is extensive.
Originally Posted by visortgw
Neither of the mentioned applications has a dictionary -- they are both e-mail viewers, not spell checkers. If you are looking for a spell checker with a device-resident dictionary, you may wish to try BEIKS LexSpell ($10 "donationware").