This app is a client of our meeting system, it runs both on iPhone and iPad(iOS software version should be at least 8.0). Certainly, it can touch with other people in realtime, including watching each others video, talking with each other and watching others shared documents. It runs fine on Wifi or 4G network.
Some technical parameters:
1, supports H263, H264 video encoding and decoding;
2, audio format is ILBC;
3, average using bandwidth: 20-30KB/S.