Although the computational-heavy sensor data processing and navigation is done internally by AVA’s on-board computer, the high-level control is left to whatever device is connected to its head. In the video below, you can see AVA being controlled by an iPad.
In the video AVA is called a "technology demonstrator" and they took her to the Consumer Electronics Show in January "to show what IRobot is capable of from a technical perspective".
The article states:
The future of AVA is uncertain, but it could be immediately useful for telepresence. Nevertheless, iRobot does not want to limit the public’s vision of the robot to a single application.