My startup is working on exactly this problem. Our customer development reinforces that people - of all ages - know intellectually that they're supposed to save. But they have no idea how to start, or if they've started, if they're actually on track to have a decent retirement.

You can request an invite for our preview at http://www.blueleaf.com and shoot me an e-mail to sachin@blueleaf.com with HN in the subject and I'll make sure you get in before we launch. If there are any pony requests - "someone should really do [x]" - I'd love those too, even if you're not interested in our preview.