The top of the iO line for users who want AI-powered brushing feedback, a full-color display, and app connectivity. CNET notes the iO series has five brush modes — more than most competitors — and the 9 adds the most comprehensive smart tracking.
Most people don't need this, and Reddit will tell you the Pro 1000 cleans just as well. But if you're a data-driven person who actually wants to improve brushing technique, the iO9's AI coaching is the most capable Oral-B has ever built.
“The iO has five brush modes, whereas most electric toothbrushes seem to have three or four.”
