Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | iRobot - Roomba i7+ | Roborock - S8 Pro Ultra |
|---|---|---|
| Battery life | 75 min | 180 min |
| Mopping | false | true |
| Lidar | false | true |
| AI obstacle avoidance | false | true |
| Noise | 68 dB | 67 dB |
| Suction | 0 Pa | 6000 Pa |
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 / mopping. Overall, the Roomba i7+ scores 36.6 and the S8 Pro Ultra scores 79 on our Mars Score.
Which should you buy?
The S8 Pro Ultra is the clear pick on raw spec strength, leading by 42.4 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+ does not 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 / mopping. Its strongest claims are battery life, mopping, lidar, among others. The single most decisive one: Battery life — 140.00% more. 180 min vs 75 min.
Both ship with comparable self-empty base, so those specs do not 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.
Which should you buy: iRobot - Roomba i7+ or Roborock - S8 Pro Ultra?
Roborock - S8 Pro Ultra leads the current Mars Score by 42.4 points.The more useful decision is the trade-off behind that result: compare suction, battery life, mopping against the way you will actually use the product.
Choose iRobot - Roomba i7+ if…
iRobot - Roomba i7+ does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Roborock - S8 Pro Ultra if…
Roborock - S8 Pro Ultra has the measurable edge on battery life min, has mopping, has lidar.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
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.