Seems pretty neat, like what you're doing here, NubeDeArroz!

I like how simple you've kept it. I built a similar service a few years ago to send invoices to clients directly: http://betterinvoices.com – we were one of the first partners with Stripe. You can hook up your stripe account and accept credit cards – free :)

Looks like one of the philosophies that we both share is not needing to log in before doing anything. I think this is very powerful – especially for people who just want to get things done. But if you're a bit OCD, you can still log in and get more.

Keep up the good work!