Narwal Freo S
A cheap self-emptying LiDAR robot for small homes that mostly want vacuuming. Light mopping is a bonus, not a reason to buy it.
Amazon $199.99$199.99
The Narwal Freo S is the better robot vacuum overall, rated 4.1 to 3.7. The Narwal Freo S leads on navigation and value. The Narwal Freo S costs $40 less ($199.99 vs $239.99).
Dreame D20 Air Plus
A budget self-emptying LiDAR vacuum for tidy homes; skip it if you want real mopping or obstacle avoidance.
Amazon $239.99$239.99
Prices were last checked October 27, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Narwal Freo S for navigation (LiDAR + 3D light vs LiDAR) and value ($200 vs $240).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every vacuum and mop robot vacuum; a clear win is highlighted. How we rank explains each one.
| Factor weight | Narwal Freo S | Dreame D20 Air Plus |
|---|---|---|
| Overall rating | 4.1/5 | 3.7/5 |
| Cleaning 30% | 73 not yet tested; estimated from 4 tested Narwal robots and the median of the 70 tested robots | 73 not yet tested; estimated from 12 tested Dreame robots and the median of the 70 tested robots |
| Value 25% | 100 $200 | 89 $240 |
| Dock 20% | 62 Self-empties the bin | 44 Self-empties the bin |
| Navigation 15% | 85 LiDAR + 3D light | 65 LiDAR |
| Mopping 10% | 10 Static pad | 10 Static pad |
Specifications
| Narwal Freo S | Dreame D20 Air Plus | |
|---|---|---|
| Vacuum | ||
| Claimed suction | 8,000 Pa | 20,000 Pa |
| Main brush | - | Rubber-bristle brush |
| Dustbin | 250 mL | 220 mL |
| Mopping | ||
| Mop | Static pad | Static pad |
| Leaves mop at dock | No | No |
| Extending mop | No | No |
| Water tank | 300 mL | 280 mL |
| Dock | ||
| Dock | Self-empty | Self-empty |
| Self-empties | Yes | Yes |
| Dust bag | 3.5 L | 4 L |
| Washes mop | No | No |
| Hot-water wash | - | No |
| Hot-air drying | - | No |
| Detergent dosing | - | No |
| Navigation & app | ||
| Navigation | LiDAR + 3D light | LiDAR |
| Obstacle avoidance | Forward structured light | - |
| Climbs thresholds | 20 mm | - |
| Voice assistants | Alexa, Google Assistant | - |
| Build | ||
| Height | 3.9 in (100 mm) | 3.7 in (94.7 mm) |
| Retracting LiDAR | No | No |
| Battery | 3,200 mAh | 3,200 mAh |
| Run time | - | Up to 2 h 30 min |
| Weight | 7.1 lb (3.2 kg) | 5.7 lb (2.6 kg) |
| Warranty | 1 year | 3 years |
| Released | 2025-08 | 2026-03 |