Wow, promoting your own similar app in someone else's Show HN is pretty stale.
"Show HN" isn't a promise of free advertising. The point is to get feedback (and to show off, of course) and pointing to competing products can be great feedback and add to the discussion in here.
One to-do app doesn't fit all. Everyone has their own working style and schedule flexibility, so it makes sense to try out as many options. You can read more about the intention behind my to-do app at http://apps.ycombinator.com/item?id=1466775
Yep, not a right gesture to do, considering your app is kind of rival to op's initiative.
Both are free apps and and its kind of cool to compare them. I think this is relevant.