Great app

Personally I think that this app is great its very useful and I dont have any problems with it. I dont have a problem with it going to Google for definitions since I use it for spelling hence the name "SPELLER" and I use it on my iPhone so if I do want a definition it does not matter cause I have a data plan. although I do think it would be a good idea for us to have the option to download the dictionary, but it should be an in app download because people with less memory probably dont want to load an entire dictionary.
Although I am a programmer I have never never made an app for for any phone but I know how annoying trying to incorporate a dictionary in to a program is. What I have done in this situation is search "dictionary script for (insert programming language here)" then you can download a script file and incorporate it into your app

Drummerjordan about Speller - Free Spell Checker, v1.5.2