Great points. We've tried to build trust by showing that we're real people (e.g. here's what we look like!), but I agree we could do more. Great feedback.
Don't assume people will go as far as trying your app to find out. Most people don't understand the difference anyways between the app and marketing site.
No, you're totally right. I've added our site seal to the footer which verifies our identity. I've also modified our privacy policy with a link to this verification as well.
As we get more coverage, we'll add more symbols of trust right at the top of the page.
We're just getting started, so thanks for your feedback!