As far as we can tell, it makes no difference from if it was generated server side: https://www.google.com/search?q=site%3Aappapp.io
So yes, Google definitely does index dynamic content. I would love to know if it ranks it equivalently.
Also, Bing does not: http://www.bing.com/search?q=site%3aappapp.io
(apologies for the minor self-promotion)