Between the Roomba j9+ and Robot Vacuum Pro, the Roomba j9+ comes out ahead in battery life / ai obstacle avoidance, while the Robot Vacuum Pro wins on noise / mopping. Overall, the Roomba j9+ scores 49.8 and the Robot Vacuum Pro scores 46.6 on our Mars Score.
Which should you buy?
The Roomba j9+ edges ahead on the Mars Score (49.8 vs 46.6), but the 3.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Roomba j9+ if you care most about battery life / ai obstacle avoidance. The biggest gaps in its favor are battery life, ai obstacle avoidance.
Pick the Robot Vacuum Pro if you care most about noise / mopping. Its strongest claims are noise, mopping, lidar, among others.
Both ship with comparable self-empty base, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Why iRobot - Roomba j9+ wins
- ▲Battery life — 66.67% more. 200 min vs 120 min.
- ▲Has AI obstacle avoidance.
Why Wyze - Robot Vacuum Pro wins
- ▲Noise — 3.00 dB less. 65 vs 68.
- ▲Has Mopping.
- ▲Has Lidar.
- ▲Suction: 3000 Pa vs 0 Pa.
- ▲Water tank: 180 ml vs 0 ml.
Spec comparison
Cleaning
| Spec | iRobot - Roomba j9+ | Wyze - Robot Vacuum Pro |
|---|---|---|
| Suction | 0 Pa | 3000 Palead |
| Mopping | false | truelead |
| Water tank | 0 ml | 180 mllead |
| Dustbin | 500 mllead | 350 ml |
| Carpet detection | true | true |
Navigation
| Spec | iRobot - Roomba j9+ | Wyze - Robot Vacuum Pro |
|---|---|---|
| Lidar | false | truelead |
| Camera navigation | true | true |
| AI obstacle avoidance | truelead | false |
| Max climb | 20 mmlead | 18 mm |
Autonomy
| Spec | iRobot - Roomba j9+ | Wyze - Robot Vacuum Pro |
|---|---|---|
| Battery life | 200 minlead | 120 min |
| Self-empty base | true | true |
| Self-wash mop | false | false |
| Self-dry mop | false | false |
| Noise | 68 dB | 65 dBlead |
Frequently asked
Which has stronger suction, Roomba j9+ or Robot Vacuum Pro?+
Robot Vacuum Pro delivers 3000 Pa vs 0 Pa.
Do Roomba j9+ or Robot Vacuum Pro mop?+
Robot Vacuum Pro mops; Roomba j9+ vacuums only.
Which has a self-emptying base, Roomba j9+ or Robot Vacuum Pro?+
Both ship with a self-emptying base.
Spec-level deep dives
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