Between the Roomba j9+ and Cube, the Roomba j9+ comes out ahead in battery life and ai obstacle avoidance, while the Cube wins on noise and mopping. Overall, the Roomba j9+ scores 49.8 and the Cube scores 61.3 on our Mars Score.
Which should you buy?
The Cube is the clear pick on raw spec strength, leading by 11.5 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Roomba j9+ if you care most about battery life and ai obstacle avoidance. The biggest gaps in its favor are battery life, ai obstacle avoidance.
Pick the Cube if you care most about noise and mopping. Its strongest claims are noise, mopping, lidar, among others.
Both ship with comparable self-empty base, so those specs don't separate the two — focus on the differences below.
Bottom line: the Cube is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why iRobot - Roomba j9+ wins
- ▲Battery life — 11.11% more. 200 min vs 180 min.
- ▲Has AI obstacle avoidance.
Why Yeedi - Cube wins
- ▲Noise — 3.00 dB less. 65 vs 68.
- ▲Has Mopping.
- ▲Has Lidar.
- ▲Suction: 8000 Pa vs 0 Pa.
- ▲Water tank: 230 ml vs 0 ml.
Spec comparison
Cleaning
| Spec | iRobot - Roomba j9+ | Yeedi - Cube |
|---|---|---|
| Suction | 0 Pa | 8000 Palead |
| Mopping | false | truelead |
| Water tank | 0 ml | 230 mllead |
| Dustbin | 500 mllead | 300 ml |
| Carpet detection | true | true |
Navigation
| Spec | iRobot - Roomba j9+ | Yeedi - Cube |
|---|---|---|
| Lidar | false | truelead |
| Camera navigation | truelead | false |
| AI obstacle avoidance | truelead | false |
| Max climb | 20 mm | 20 mm |
Autonomy
| Spec | iRobot - Roomba j9+ | Yeedi - Cube |
|---|---|---|
| Battery life | 200 minlead | 180 min |
| Self-empty base | true | true |
| Self-wash mop | false | truelead |
| Self-dry mop | false | truelead |
| Noise | 68 dB | 65 dBlead |
Frequently asked
Which has stronger suction, Roomba j9+ or Cube?+
Cube delivers 8000 Pa vs 0 Pa.
Do Roomba j9+ or Cube mop?+
Cube mops; Roomba j9+ vacuums only.
Which has a self-emptying base, Roomba j9+ or Cube?+
Both ship with a self-emptying base.
Spec-level deep dives
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