Pros:
* Code when you're on the move because... laptops haven't been invented yet?
Cons:
* You need an internet connection all the time. * No support for any version control system??? "Import your project from Dropbox and Dringend will handle syncing any changes you make in the app back to Dropbox." Dropbox for version control??? Are you joking? * No support for unit tests, asset catalog, breakpoints, interface builder...
I really don't get the point of this app, it's a cool hack but it's not an IDE. Developing for iOS involves a complex and large set of essential tools, no decent IDE for iOS can omit a single one of these tools.