Between the Roomba i7+ and S8 Pro Ultra, the Roomba i7+ comes out ahead in several specs, while the S8 Pro Ultra wins on battery life and mopping. Overall, the Roomba i7+ scores 37.2 and the S8 Pro Ultra scores 57.7 on our Mars Score.
Which should you buy?
The S8 Pro Ultra is the clear pick on raw spec strength, leading by 20.5 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.
The Roomba i7+ doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the S8 Pro Ultra if you care most about battery life and mopping. Its strongest claims are battery life, 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 S8 Pro Ultra is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why iRobot - Roomba i7+ wins
- No decisive advantages.
Why Roborock - S8 Pro Ultra wins
- ▲Battery life — 140.00% more. 180 min vs 75 min.
- ▲Has Mopping.
- ▲Has Lidar.
- ▲Has AI obstacle avoidance.
- ▲Noise — 1.00 dB less. 67 vs 68.
- ▲Suction: 6000 Pa vs 0 Pa.
- ▲Water tank: 180 ml vs 0 ml.
Spec comparison
Cleaning
| Spec | iRobot - Roomba i7+ | Roborock - S8 Pro Ultra |
|---|---|---|
| Suction | 0 Pa | 6000 Palead |
| Mopping | false | truelead |
| Water tank | 0 ml | 180 mllead |
| Dustbin | 400 ml | 400 ml |
| Carpet detection | true | true |
Navigation
| Spec | iRobot - Roomba i7+ | Roborock - S8 Pro Ultra |
|---|---|---|
| Lidar | false | truelead |
| Camera navigation | true | true |
| AI obstacle avoidance | false | truelead |
| Max climb | 20 mm | 20 mm |
Autonomy
| Spec | iRobot - Roomba i7+ | Roborock - S8 Pro Ultra |
|---|---|---|
| Battery life | 75 min | 180 minlead |
| Self-empty base | true | true |
| Self-wash mop | false | truelead |
| Self-dry mop | false | truelead |
| Noise | 68 dB | 67 dBlead |
Frequently asked
Which has stronger suction, Roomba i7+ or S8 Pro Ultra?+
S8 Pro Ultra delivers 6000 Pa vs 0 Pa.
Do Roomba i7+ or S8 Pro Ultra mop?+
S8 Pro Ultra mops; Roomba i7+ vacuums only.
Which has a self-emptying base, Roomba i7+ or S8 Pro Ultra?+
Both ship with a self-emptying base.
Spec-level deep dives
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