This app runs both on iPhone and iPad(iOS software version should be at least 4.3). Certainly, it can touch with other people in realtime, including watching each others video, talking with each other and watching others shared documents. Besides, you can invite your friends to attend the meeting. It runs fine on Wifi or 3G network.
Some technical parameters:
1, supports H263, H264 video encoding and decoding;
2, audio format is ILBC;
3, average using bandwidth: 20-30KB/S.