I don't know if this is the right place for this, but DDG itself brought me here for feature suqqestions, so here goes:
It would be really nice to see theming support added for the Android app. This is what's holding me back on using it. I use the browser version because I can load the terminal theme and it's easier on the eyes.
Also, it would be nice if there was a setting to open searches on the app, but open links in external browser. Right now, I can either open everything inside the app, or open everything externally.