I've looked at some like Rally and VersionOne but those seem to be more enterprise software. I 'd prefer to just have a more simple one for our two-person team to track and build our mobile app product.
I've seen Scrum'd and PivotalTracker, for example. What other ones do you recommend and why? Again, simplicity, web-based and speed of use are key. I really don't need anything more complicated than that.
If its a two person team then most tools will end up getting in the way rather than helping.
Most times people start off with a tool and fall back to the white board and post it notes until their teams grow over about 8-10 people.
I have also seen great whiteboard solutions for teams that are seperate ... they point a webcam at the board.
Go with a Google Spreadsheet. That way, people who are at home or offline can read it and update it.
You can also use Google Sites within your Google Apps domain. They have templates for running projects, and they are very effective for small teams.
You might want to try Jira + Greenhopper:
You can easily drag and drop your planningcard on the screen - it's a bit like a virtual whiteboard. Additionally you see burn down charts at one click. That is really helpful.