RankedApptronik Apollo 2 vs UBTECH Walker S2
Key facts
Apptronik Apollo 2 (Apptronik; Pilot) and UBTECH Walker S2 (UBTECH Robotics; Shipping) are both humanoid robots. Published for only one of them: payload (UBTECH Walker S2: 15 kg (33 lb)). Neither maker has published a price. Robot 500: Apptronik Apollo 2 not ranked (fewer than 2 sourced capability figures), UBTECH Walker S2 not ranked (fewer than 2 sourced capability figures). Disclosure: Apptronik Apollo 2 has 9 sourced values (32% of tracked fields), UBTECH Walker S2 has 9 (33%).
Cite: RankedRobot, https://rankedrobot.com/compare/apptronik-apollo-2-vs-ubtech-walker-s2/ (checked 2026-09-26) · Every figure below links to its source · Apptronik Apollo 2 spec sheet · UBTECH Walker S2 spec sheet
| Spec | Apptronik Apollo 2 | UBTECH Walker S2 |
|---|---|---|
| Status | Pilot | Shipping |
| Price | Not published | Not published |
| Robot 500 | Not ranked | Not ranked |
| Launch | ||
| Announced | ||
| Status | ||
| Units deployed | ||
| Body | ||
| Height | ||
| Weight | ||
| Form factor | ||
| IP rating | ||
| Mobility | ||
| Max walking speed | ||
| Max drive speed | Not tracked | |
| Dexterity | ||
| Total degrees of freedom | ||
| DOF per hand | ||
| Payload | ||
| Carry payload | 15 kg (33 lb)ManufacturerSource: ubtrobot.com (2026-09-23)Conditions: within a 0-1.8 m vertical workspace, per official product page | |
| Per-arm payload | ||
| Compute & AI | ||
| Processor | ||
| AI performance | ||
| Teleoperation | ||
| Sensors | ||
| Cameras | Self-developed passive binocular (dual-camera) stereo RGB vision system with deep-learning stereo depth estimationManufacturerSource: ubtrobot.com (2026-09-23) | |
| Power | ||
| Battery | ||
| Runtime | ||
| Charge time | ||
| Hot-swappable battery | ||
| Software | ||
| SDK | ||
| Safety | ||
| Certifications | ||
| Commercial | ||
| Regions sold | ||
Confidence labels: Manufacturer = stated by the maker · Verified = independently confirmed · Reported = credible media or retailer, not confirmed by the maker · ⚠ Unconfirmed = leak or single source · Not disclosed = not published. We never estimate missing figures. Add more robots to this comparison.
Quick answers
What is the difference between the Apptronik Apollo 2 and the UBTECH Walker S2?
Published for only one of them: payload (UBTECH Walker S2: 15 kg (33 lb)). Neither maker has published a price.
Which is cheaper, the Apptronik Apollo 2 or the UBTECH Walker S2?
Neither maker has published a price. Prices are shown exactly as published, never converted or estimated.
Which ranks higher in the Robot 500, the Apptronik Apollo 2 or the UBTECH Walker S2?
Robot 500: Apptronik Apollo 2 not ranked (fewer than 2 sourced capability figures), UBTECH Walker S2 not ranked (fewer than 2 sourced capability figures). Method: https://rankedrobot.com/robot500/#method
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