Not one comment in here is positive which saddens me. In the end, HN should encourage people to build awesome solutions. But even Dropbox got negative comments when they launched on HN, so maybe this is just how things work.

So here's my (positive) take: Great work, thanks for sharing. I especially like the design of the page, playful but still clean. AFAIK there's a similar app from toggl themselves, what are the advantages of your solution?