Well, indeed its one of the best navigation apps for visual impaired individuals Ive ever have seen. But I would suggest a more continuos process of adding new languages, E.G. german. The TTS engines are ready to run. I assume that the major problem is the needed translation of menus and prompts. Im ready to do that job around the german language if necessary.
MartinAusFfM about BlindSquare, v1.14