Nice clean look of the presentation and also the app. Everything seems well tested and well researched.

Great consistency of the UI and the feeling you get while browsing is really positive.

Feedback from my UX perspective. Had a little hard time to get to know that you have more pages available, because I am more used to navigate through the navigation than the footer.

You have a useful product with great UI and a lot of nice features to offer. Keep up the good work!

I like this dropbox look and feel :)

The only downside I could mention is that, for some reasons, parts of the text and UI elements are sometimes a bit blurry (tested on Chrome and FF).

I think that your site could be a case study that shows how simplicity is used to emphasize a business message. Everything is crystal clear, to-the-point, smooth and gives the user a feeling of trustfulness right from the beginning. Good job!