If I get an "Aquabot" do I still need a pool filter and vice versa? - automatic pool cleaners

First, I am not at all familiar with the pools. What happens is that the house that I live in one and the filter is broken. I saw an online advertisement for their own group Aquabot was curious about it. Since I am the pool, but I do not want something on that you do not just take with me when I go out and share. Then again, if I Aquabot automatic pool cleaner with a filter I need?

http://www.saveonpoolsupplies.com/Pool-Equipment/Aquabot-Robotic-Pool-Cleaners/Pool-Rover-Automatic-Pool-Cleaner-by-Aquabot-/