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Comparing 2 robot vacuums

Your shortlist side by side: today’s price, our score and every fact the maker states.

Green is the best of these 2, also when they share the lead.

Redkey R10 × Best on 2 facts Dreame D20 Air Plus × Best on 4 facts
Most important facts
Lowest price 159 €Saturn best 199 €Amazon.de
Score not in our ranking 5.5
Customer rating ★ 4.2 · 40 reviews ★ 5.0 · 1 review
Tests – Just A Dad Approved
Suction power higher is better 4,000 Pa 20,000 Pa best
Runtime per charge longer is better 120 min 150 min best
Climbs thresholds up to higher is better 18 mm 20 mm best
Robot height lower is better 9.4 cm best 9.5 cm
Dust bag lasts longer is better up to 90 days up to 120 days best
Navigation same on both LiDAR turret LiDAR turret
Rank
Rank – rank 3 of 13 with an auto-empty station
Mopping
Mop type same on both flat pad flat pad
Automatic mop detach – no (assumed)
Washes the mop – no
Hot-air drying – no
Station
Station same on both auto-empty station auto-empty station
Plumbing hookup – no (assumed)
Brush and obstacles
Anti-tangle brush – yes
Obstacle avoidance – none
Climbing system for high thresholds – no (assumed)
Noise and age
Noise while cleaning not judged 60 dB 76 dB
On the market since – December 2025
Suction and brushes
Filter type HEPA –
Extending side brush – no (assumed)
Carpet detection – detects carpet
Suitable for pet hair – yes
Dirt detection – yes
Mopping
Water tank in the robot 350 ml 280 ml
Mop extends to the edges – no (assumed)
Mop refreshed while mopping – no (assumed)
Dock
Empties the dust bin same on both yes yes
Bagless same on both no no
Dust bag capacity same on both 4 l 4 l
Dries the mop – no
Dispenses detergent – no (assumed)
Clean water tank – 4 l
Navigation and obstacles
No-go zones same on both zones in the app zones in the app
Recharge and resume yes –
Stair-edge sensors same on both yes yes
Robot
Robot diameter 33 cm 32.5 cm
Dust bin in the robot 400 ml 220 ml
Robot weight – 2.59 kg
Battery
Charging time 2 h 4.5 h
Battery capacity – 3,200 mAh
Smart features and warranty
Matter same on both no no (assumed)
Voice assistants Google Assistant Alexa, Google Assistant, Siri
Warranty 1 year 2 years
Scheduled runs same on both yes yes

Facts as the maker states them. A dash means the maker does not name it. Each model’s page gives the source of every fact. Noise is the maker’s own figure, so we do not judge it, and a customer rating only counts from 20 reviews.

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