Definitely very appealing to anyone who already has money in wealthfront and can live with there money potentially not being accessible for 1-3 days. Its crazy how little the banks offer. My current bank gave my account a special status after maintaining a high account balance for a few months. The benefits I gained are slightly better deals on services at the bank (ex 25% extra cash back, or some small percentage off a new mortgage interest rate). In comparison, the return I would get on the amount if I put it in any 2%+ savings account is far more. Doesn't look like my bank will be keeping that money for long.
Marcus by Goldman Sachs is offering 2.25% on its High Yield savings accounts, if you can't get into wealthfront. I've been pretty satisfied with the offering.
Ally Bank has 2.2%
For slightly higher yields, Vanguard has VMMXX. It is a money market fund and not FDIC insured, however.
Here is to hoping this pushes Betterment to offer the same. FDIC and 2%+.
There is still volatility, even though they are bonds it's a bit different from a straight cash account that Wealthfront offers. I've used SS and it's been lackluster.