One gripe, though, with the iPhone app. A lot of times I'll use my time on the BART or stuck in traffic to prepare for different tasks. So for example, I had a card on To Do for a 401k rollover. So on the train one morning I did the research for it. I added comments to the card with account numbers, phone numbers, etc, so that way when I had a moment i could make the calls and everything was in one place. So with all that preamble: Telephone numbers in comments aren't clickable. They look like they are. They turn underlined blue. But clicking them doesn't start the Phone app.