iRobot Roomba j9+ vs Roborock S8 Pro Ultra
We compare the iRobot Roomba j9+ and Roborock S8 Pro Ultra head-to-head on performance, features, value, and more. Here's which one wins.
iRobot Roomba j9+
Scored 9/10 in our testing
iRobot Roomba j9+
Pet owners and busy families who want the smartest, most capable self-emptying robot vacuum
Roborock S8 Pro Ultra
Homeowners who want a robot that vacuums AND mops with a fully automated dock
Score Breakdown
| iRobot Roomba j9+ | Category | Roborock S8 Pro Ultra |
|---|---|---|
| 9.5/10 | Performance | 9.5/10 |
| 9.5/10 | Features | ✓ 9.8/10 |
| 9.5/10 ✓ | Ease of Use | 9/10 |
| 7.5/10 ✓ | Value | 7/10 |
| 9/10 ✓ | Overall | 8.8/10 |
Specs Comparison
| iRobot Roomba j9+ | Spec | Roborock S8 Pro Ultra |
|---|---|---|
| 100% stronger than j7+ | Suction | 6,000Pa |
| PrecisionVision + iRobot OS | Navigation | Sonic vibrating, auto-lifting |
| 60-day Clean Base | Self-Empty | Self-empty, self-wash, self-dry |
iRobot Roomba j9+
Pros
- + Avoids pet waste — essential for pet owners
- + 60-day self-emptying Clean Base
- + 7x faster mapping than previous gen
Cons
- − $899 MSRP — most expensive Roomba
- − Clean Base bags are ongoing cost
- − Doesn't mop (vacuum only)
Roborock S8 Pro Ultra
Pros
- + Vacuums AND mops in one pass
- + Dock: self-empty, self-wash, self-dry
- + Auto-lifting mop for carpets
Cons
- − $1,600 MSRP — serious investment
- − Large dock footprint
- − Mop pad replacement needed periodically
Our Verdict
Based on our scoring, the iRobot Roomba j9+ comes out on top with an overall score of 9/10. The Roomba j9+ is iRobot's smartest vacuum. PrecisionVision navigation identifies and avoids obstacles like pet waste, cords, shoes, and socks — critical for pet owners. Creates a complete map of your home 7x faster than the j7+. The Clean Base empties itself for up to 60 days. Smart Scrub mode presses down harder and scrubs back and forth on stubborn messes. Works with Alexa and Google Assistant for voice control.
Buy the iRobot Roomba j9+ on AmazonRead the full Best Robot Vacuums 2026 guide for complete reviews of all 4 products.