If this is a US-only service, it should say so on the website somewhere.
I've also had this experience with e.g. Betterment and Wealthfront. The only way to find out they're US-only is halfway through sign up process, not even anywhere in FAQ's.
The first line under the main heading starts with "The only nationally chartered bank...". That, combined with the dot com domain, implies pretty heavily that it's a US only thing. At least, it did for me.
I knew that there was zero chance of this being in Canada so that automatically left this being a US only operation. Very cool, I'm curious what sort of apps you could build on this, it seems that while you can get some programmatic access to banking, there's so many state specific regulations and law you have to abide by.
Money transfer license alone is quite expensive for each state.
I've also had this experience with e.g. Betterment and Wealthfront. The only way to find out they're US-only is halfway through sign up process, not even anywhere in FAQ's.