Seems pretty similar to Betterment or a host of other providers (Personal Capital, etc). All these guys rely on the same thing: low-cost, large ETFs and the use of modern portfolio theory (MPT) to put together a balanced portfolio. The problem with all of them is the same - following MPT in 2007-2008 would have gotten you killed. All that being said, getting people to save and invest in general is a very good thing - so maybe there's the true value of the idea.