宇信 Spatial Messager app for iPhone and iPad

This is a communication tool developed for reviewing and sharing ideas on 3D models by dr. SUN Chengyu from Tongji University. It accepts OBJ model files and it supports both normal 3D navigation modes and stereo mode in a card glass-box with voice commands. The comments together with its position and view can be shared between users in an online or offline situation through Q-code and string, which contributes to the communication in design industries of architecture, urban design, landscape architecture, and product design.