I think your app is great! I am also the kind of person to get really excited about new productivity apps that have that one cool trick that makes it different from other apps, so I might not be a good gauge on how well your app would be received, but yea, I love it.
The only other self tracking app I have used is Beeminder. My only gripe about Beeminder is that everything is linear, if you do 10 units more you are 10 ahead, if you miss 10 units you are now 10 units behind. I have always wanted some sort of discounting for being ahead, and some sort of sped up recovery for being behind, and I think your app does this well.
I think your app does this well.
How is it after a week? Do you still use it?
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