From the RWW article:
The tool manages gradebooks, lesson plans, attendance and will integrate with Google Calendar - providing one account, rather than multiple accounts, to manage the classroom. LearnBoost operates on the freemium model, with a free tool as well as premium features, and as such promises to offer substantial savings to cash-strapped schools. But it's not just price that makes LearnBoost a compelling choice for educators. The product was developed and designed with teacher input, and much care was taken in the user interface.