Help me choose
Our pick: Dolphin Sigma
Dolphin Sigma is the Pool Express pick in this matchup. Dolphin Sigma includes filtration for sand, pollen and other fine debris. Dolphin Sigma carries a 3-year warranty instead of 2 years.
ProLine
Dolphin Sigma
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Aquabot
Aquabot REVA
Inground pools that need floor, wall and waterline cleaning.
Why Dolphin Sigma is our pick
Dolphin Sigma
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$2,399
Buy Dolphin SigmaDolphin Sigma or Aquabot REVA: our take
Dolphin Sigma and Aquabot REVA are compared on pool fit, cleaning reach, debris handling, controls and ownership details. The recommendation is based on the job the robot must do—not a simple feature count.
Pool fit and cleaning reach
Both robots are intended for inground pools. Dolphin Sigma has a published maximum pool length of 50 ft; the other model does not have a verified length in our source material. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Sigma lists 2 active brushes, SmartNav 3.0 with gyroscope navigation, and Triple commercial-grade DC motors. Aquabot REVA lists Gyroscope navigation.
Filtration and debris
Dolphin Sigma has documented included filtration—Standard filter and NanoFilters—while the other model's included media is not fully published. That gives Dolphin Sigma the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Sigma provides a weekly timer, smartphone control, and included remote control; Aquabot REVA provides smartphone control.
Price, warranty and the decision
Dolphin Sigma is listed at $2,399 and Aquabot REVA at $499; Aquabot REVA is $1,900 less. Dolphin Sigma lists a 3-year warranty compared with 2 years for Aquabot REVA. Pool Express pick: Dolphin Sigma. Dolphin Sigma includes filtration for sand, pollen and other fine debris. Dolphin Sigma carries a 3-year warranty instead of 2 years. Choose Aquabot REVA when it is the better fit for shoppers prioritizing the lower $499 starting price.
Feature check: what each robot actually has
A green check means the feature is documented as included. A red X means it is documented as absent. A dash means the source does not make the feature clear.
| Feature | Dolphin Sigma | Aquabot REVA |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | No | No |
| Automatic scheduling | Yes | Not listed |
| Smartphone app | Yes | Yes |
| Anti-tangle swivel | Yes | Not listed |
| 3-year warranty | YesEdge | No |
| No recharging between cycles | Yes | Not listed |
| Built-in UV-C water treatment | No | No |
Unknown is not treated as “no.” Specifications come from the product pages, current catalog records and manufacturer material collected for this site.
Where Dolphin Sigma stands out
Dolphin Sigma is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
- Includes filtration for sand, pollen and other fine debris
- Carries a 3-year warranty instead of 2 years
Where Aquabot REVA stands out
Aquabot REVA is the better fit for shoppers prioritizing the lower $499 starting price.
- Is listed $1,900 lower
- Smartphone app control
Dolphin Sigma vs Aquabot REVA specifications
Use pool fit first. Price and app control do not make up for a robot that cannot cover the length or surfaces you need cleaned.
| Specification | Dolphin Sigma | Aquabot REVA |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. | Inground pools that need floor, wall and waterline cleaning. |
| Starting price | $2,399 | $499 |
| Pool type | Inground | Inground |
| Maximum pool length | Up to 50 ft | Not listed |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Corded | Not listed |
| Filtration | Standard filter, NanoFilters | Not listed |
| Scheduling | Weekly schedule + app | Not listed |
| App and remote | App + included remote | App control |
| Cable | 55 ft with anti-tangle swivel | Not listed |
| Robot weight | 24.6 lb | Not listed |
| Warranty | 3 years | 2 years |
Choose Dolphin Sigma
Dolphin Sigma is the Pool Express pick in this matchup. Dolphin Sigma includes filtration for sand, pollen and other fine debris. Dolphin Sigma carries a 3-year warranty instead of 2 years.
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