April 18, 2019 edit: Now rebranded as iKnow, the service is no longer completely free.
In a nutshell: Smart.fm is a free, web-based flash card service. If you crack the nutshell open to get a look at the details of how it works, though, it’s far better than that. Here, let the official Smart.fm video introduction explain what I mean.
Note: The video was taken down after the rebrand. They don’t seem to have a video anymore, but the company has a features page.
Smart.fm is not the only software based on spaced repetition. It does, however, have a few advantages over the other ones I’ve tried.(more…)