On your frontpage: there are some graphics under the video which frankly are too small to make out. You may as well drop them - maybe replace with a screenshot tour (I don't usually like watching videos because you can't skim through them).

Also on front page, your tag line ("For individuals ...") is too close to the word "planning" with a big gap underneath it. The tagline could be very much bigger and make better use of the available space.

Your signup page is a bit of an eyeful. I like the narrative on the fields, but maybe put the elements in a table with the narrative in a column on the left (in place of regular labels) and the fields on the right. However, thanks for guessing my timezone correctly (or maybe it was a lucky default ;) and letting me change the date format up-front.

The video is too long at 5 minutes. My (admittedly short) attention span ran out at 2 minutes. In fact, the first two minutes were enough to convince me to sign up based on the look and feel, etc. Someone I know who does marketing told me "give them just enough information to choose you over your competitors. Everything else is wasted." So less is more on the video front.

However, I did sign up and I like the look of the app itself. Judging from your help page, there's a lot to know so maybe you should make those pages into a PDF so people can print cheat-sheets? Looks like each section should fit nicely on an A4/letter page.

Sounds like I'm being critical but it looks like a great app and I wish you luck with it. I'll try to use it some more and post again.