I can attest. It supports both "one shot" cards as well as multi-use (with a time limit, up to one year), both with a limit on how much they can be charged.

That said, I don't think it has an Android app, just a mobile website. The app that shows in Google Play is just a shortcut to the website (built by an unaffiliated developer).

And of course, it doesn't even any of the notification stuff, it's just a gateway to your regular bank account. Nor does it have physical cards.