Language change on Android

Hi, I'm con my first day of the trial with the Android app. Muy phone is in Spanish so the app automatically selects that language. Now the problem is that the translation feels like it was deliberately done as a joke. Sorry if someones feelings are hurt, but you have to admit you don't speak spanish.
How can I force english on the app without rooting or changing the global language?
If you give me the strings and I provide a more accurate translation, can I get the full version as a reward?

Many thanks for the offer. Please email us at support [at] conceiva [dot] com and we'll provide the strings for you to translate. And, we'll happily provide you with a free Mezzmo Android for your efforts :).

Wrote. Let's see what can be done.

Thanks - got your translations. We'll provide reply back via email.