The Aiper Scuba S3 and the Seauto Crab are evenly matched, rated 4.0 and 4.0. The Seauto Crab wins on value. The Seauto Crab costs $470.07 less ($229.92 vs $699.99).
A light, mid-priced robot for small-to-mid-size in-ground pools that need floor, wall and waterline cleaning. For a little more, the Scuba V3 adds AI debris detection and a wireless dock.
Amazon $699.99Skip it: independent testing found poor debris pickup. Any WYBOT C1 or Aiper at a similar price is a safer bet.
Amazon $229.92Prices were last checked November 3, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Each factor is scored 0-100 against the same fixed reference points for every cordless robotic pool cleaner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Aiper Scuba S3 | Seauto Crab |
|---|---|---|
| Overall rating | 4.0/5 | 4.0/5 |
| Value 25% | 55 $700 | 100 $230 |
| Cleaning 25% | 85 Floor, walls and waterline | 60 Floor and walls (waterline not stated) |
| Navigation 15% | 50 Gyroscope + sensors | 50 navigation not published (neutral score used) |
| Warranty 15% | 50 2-year warranty | 50 2-year warranty |
| Pool size 10% | 100 pools up to 1,610 sq ft | 100 pools up to 1,610 sq ft |
| Features 10% | 100 3 of 3 | 50 too few features published (neutral score used) |
No independent test published yet.
| Tested by | Conditions |
|---|---|
| PCWorld | Runtime reported as “close to 2.5 hours” per charge in an L-shaped pool; pickup percentages are the reviewer’s estimates of coverage. |
| Aiper Scuba S3 | Seauto Crab | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 1,614 sq ft (150 m²) | Up to 1,614 sq ft (150 m²) |
| Pool types | In-ground | - |
| Surfaces | Concrete, fiberglass, vinyl, tile | - |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor and walls |
| Surface skimming | No | No |
| Filter | Top-load 3.5 L dual-layer basket (180 µm + 3 µm) | - |
| Filter capacity | 3.5 L | - |
| Water flow | 4,800 gal/h | - |
| Power | ||
| Power | Cordless (battery) | Cordless (battery) |
| Battery | - | 7,800 mAh |
| Run time | Up to 4 h | - |
| Charge time | 4 h | 2 h 30 min |
| Navigation & app | ||
| Navigation | Gyroscope + sensors | - |
| App | Yes | No |
| Scheduling | Yes | - |
| Retrieval | Parks at the waterline for pickup | - |
| Build | ||
| Weight | 18 lb (8.2 kg) | 27.6 lb (12.5 kg) |
| Warranty | 2 years | 2 years |
| Released | 2026-09 | - |
