In the last week, I’ve installed 2 or 3 apps that in the app market looked great, then after installing the default language was Chinese. Even after figuring out how to switch the default language to English, still more than half the stuff I saw in the app was in Chinese. I flat out refuse to work with an app like that. The fact that you HIGHLIGHTED the app in the app spotlight for Weknora, and the description is 100% English, you should state somewhere prominent that the default language on the install is in Chinese. (or any other language)
It makes me reluctant to install anything from your app store, without real in depth research.