The debate is over. After testing every flagship from both brands across 2024-2025, the answer is nuanced — but clear depending on your home.
Quick Verdict
| Category | Winner | Why |
|---|---|---|
| Overall Cleaning | Roborock | Higher suction + better mopping + smarter navigation |
| Carpet Deep-Clean | Roomba | Dual rubber extractors dig deeper into carpet pile |
| Mopping | Roborock | Vibrating/rotating mops vs. Roomba's basic wipe |
| Navigation | Roborock | LiDAR maps faster and more accurately than camera vSLAM |
| App Experience | Roborock | More responsive, better zone editing, fewer connection issues |
| Price | Tie | Both premium; Roborock gives more features at each price point |
| Parts Availability | Roomba | iRobot has been around longer; easier to find replacement parts |
Detailed Breakdown
Navigation: LiDAR vs. Camera
Roborock uses LiDAR (laser) navigation. It spins a laser turret to measure room dimensions with millimeter precision. Maps generate in 5-10 minutes on first run. Works in the dark. Rarely bumps into furniture after the mapping phase.
Roomba uses camera-based vSLAM. It photographs your ceiling and walls, then triangulates position. Works well enough, but maps take longer to generate (2-4 full cleaning runs), struggles in low light, and tends to bump into things more during navigation.
Winner: Roborock. The difference in daily reliability is noticeable.
Suction & Debris Pickup
On hardwood and tile, both brands perform similarly well — 96%+ pickup rates on surface debris. The difference emerges on carpet. Roomba's dual-roller brush design physically agitates carpet fibers more effectively. In our embedded dust test (talcum powder worked into carpet), the Roomba j9+ visibly outperformed the Roborock S8 — the white-glove test difference was obvious.
Hardwood: Tie. Carpet: Roomba wins.
Mopping: The Biggest Gap
This is where Roborock runs away. Their VibraRise system (S8) scrubs at 4,000 times/minute and lifts the pad 20mm for carpet. Their spinning mop systems (Qrevo series) clean corners better than any Roomba. Roomba's mopping is a damp cloth being dragged — fine for light dust maintenance, useless for dried stains.
Winner: Roborock, by a mile.
Which Should You Buy?
Buy Roborock if:
- You have mixed flooring (hardwood + carpet + tile)
- You want real mopping, not just a wet wipe
- You want the best app and smart home integration
- You clean in the dark (scheduled night cleaning)
Buy Roomba if:
- Your home is 70%+ wall-to-wall carpet
- You already own iRobot products and like the ecosystem
- You want easier access to replacement parts long-term
- You find a good sale (iRobot discounts more aggressively)
Bottom line: For most homes in 2025, Roborock is the better buy.
See Our Top Robot Vacuum Picks