# Aiper Scuba X1 Pro Max vs Dolphin (Maytronics) Sigma

As of Oct 26, 2026, the Aiper Scuba X1 Pro Max costs $1,700 and the Dolphin (Maytronics) Sigma costs $2,999, so the Aiper Scuba X1 Pro Max is $1,299 cheaper. Pick the Aiper Scuba X1 Pro Max for large in-ground pools wanting skimming too. Pick the Dolphin (Maytronics) Sigma for set and forget in-ground pools.

Prices checked Oct 26, 2026. HTML version: https://robotsforthat.com/vs/aiper-scuba-x1-pro-max-vs-dolphin-sigma/

## Side by side

| | Aiper Scuba X1 Pro Max | Dolphin (Maytronics) Sigma |
|---|---|---|
| Price | $1,700 | $2,999 |
| 3 year cost | $1,700 | $3,099 |
| Our score | Not scored yet | Not scored yet |
| Rank in Pool | #15 | #17 |
| Status | on sale | on sale |
| Warranty | 3 years | 3 years |
| Pool types | In-ground; concrete, fiberglass, vinyl, tile | In-ground; rectangular, round, free shape, kidney |
| Cleans | Floor, walls, waterline and surface skimming | Floor, walls, waterline |
| Power | Cordless (battery capacity not published) | Corded |
| Runtime | Up to 300 min floor cleaning, 600 min surface skimming | Default 2.5 h cycle; no battery |
| Charge time | 4 h | None (corded) |
| Filter | 5 L top load basket, 180 micron main filter plus 3 micron ultra fine filter | Extra large multi layer top load basket; fine filter plus ultra fine kit in box |
| Max pool size | Up to 3,230 sq ft, 100 ft long | Pools up to 50 ft long |
| App | Aiper app; underwater control needs the optional HydroComm Pro | MyDolphin Plus app over Wi-Fi with scheduling and automation |
| Suction | 8,500 gph | 4,500 gph (maker) |
| Weight | About 33 lb dry | 24.63 lb |
| Warranty | 3 years | 3 years |
| Timer | n/a | Weekly timer |
| Best for | large in-ground pools wanting skimming too | set and forget in-ground pools |
| Skip if | you cannot lift about 33 lb | you do not care about app control |

## What reviewers found

### Aiper Scuba X1 Pro Max

- Digital Trends: Editors' Choice. Floor and wall cleaning was about 90% effective and it never got stuck, with stronger suction than a Beatbot AquaSense Pro; skimming underperformed and it climbed only 0.5 to 1 inch above the waterline. [Source](https://www.digitaltrends.com/home/aiper-scuba-x1-pro-max-review-the-mercedes-of-pool-cleaners/)
- The Pool Nerd: Rated Pool Nerd Disapproved: measured weaker suction than top corded robots, fine sediment remained after several passes, and it needed 4 to 5 hours of charging after each session. [Source](https://www.thepoolnerd.com/aiper-scuba-x1-pro-max-review)

### Dolphin (Maytronics) Sigma

- The Pool Nerd: Ranked it the best robot the site has tested; the center brush rolled over the main drain every time in weeks of daily testing and its waterline cleaning was the strongest of any Dolphin tried. Affiliate site with links to Dolphin dealers. [Source](https://www.thepoolnerd.com/dolphin-sigma-review)

## Questions buyers ask

### Which is better, the Aiper Scuba X1 Pro Max or the Dolphin (Maytronics) Sigma?

Pick the Aiper Scuba X1 Pro Max for large in-ground pools wanting skimming too. Pick the Dolphin (Maytronics) Sigma for set and forget in-ground pools.

### Which is cheaper?

The Aiper Scuba X1 Pro Max at $1,700, versus $2,999 for the Dolphin (Maytronics) Sigma, checked Oct 26, 2026. Over 3 years with running costs: $1,700 vs $3,099.

### What is the difference between the Scuba X1 Pro Max and the Sigma?

Pool types: In-ground; concrete, fiberglass, vinyl, tile on the Scuba X1 Pro Max, In-ground; rectangular, round, free shape, kidney on the Sigma. Cleans: Floor, walls, waterline and surface skimming on the Scuba X1 Pro Max, Floor, walls, waterline on the Sigma. Power: Cordless (battery capacity not published) on the Scuba X1 Pro Max, Corded on the Sigma.

Full reviews: [Aiper Scuba X1 Pro Max](https://robotsforthat.com/robot/aiper-scuba-x1-pro-max/index.md), [Dolphin (Maytronics) Sigma](https://robotsforthat.com/robot/dolphin-sigma/index.md)