Ask HN: How do you translate your web application?

In my startup we want to translate our app to Spanish and Portuguese. We are not large enough to hire our own translators and we don't have enough manpower to crowdsource them.

Also we deploy daily and would like our tranlsations to be updated daily. Not in real time maybe, but within couple of hours after deployment is good enough.

I wonder whether such service already exists. What do people here use for web app translations?