iRobot Roomba Combo j9+ vs Shark AI Ultra

A detailed side-by-side comparison scored on 14 objective criteria with weighted scoring (max 12 points).

WINNER

iRobot Roomba Combo j9+

iRobot — #25 overall

6.7/10

$999

Shark — #31 overall

5.5/10

$449

iRobot Roomba Combo j9+ edges out Shark AI Ultra with a 1.2 point advantage. However, Shark AI Ultra has 55% cheaper.

Criteria	Weight	iRobot Roomba Combo j9+	Shark AI Ultra
Total Score	—	6.7/10	5.5/10
🗺️Navigation & Obstacle Tech	2x	85%*	72%
💨Suction Power	1x	82%	82%
📐Edge Cleaning	1x	75%	75%
💇Tangle-Free Rollers	1x	85%*	78%
🧹Mop System	1x	65%*	0%
🔥Mop Drying	0.5x	0%	0%
🧴Integrated Soap	0.5x	0%	0%
🔄Mop Versatility	0.5x	25%*	0%
🗑️Auto-Empty Reliability	1x	88%*	80%
📦Bin Capacity	0.5x	78%*	75%
⏱️Refill Frequency	0.5x	75%	78%*
🧗Obstacle Mobility	1x	35%	35%
📏Low Clearance	0.5x	60%*	55%
📱App Quality	1x	82%*	68%
Price	—	$999	$449
Pros		+Trusted iRobot brand +Retractable mop lifts fully +Strong obstacle avoidance +Self-emptying base	+Strong suction power +Self-emptying base +Good hair pickup +Matrix Clean navigation
Cons		-Mop is basic (no wash/dry) -Expensive for features -No hot air drying	-No mopping -App is basic -Navigation not as smart
Suction		4,000 Pa	4,000 Pa
Navigation		Camera + AI Avoidance	LiDAR
Mop Type		Pad	None
Self-Empty		Yes (60 days)	Yes (60 days)
Runtime		120 min	120 min
Mobility
Obstacle Climbing		Standard	Standard
Retractable LiDAR		No	No
Adaptive Chassis		No	No
Multi-Mop Switch		No	No
		Check Price Full Review	Check Price Full Review