Help me choose
Our pick: Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman cleans floor and walls. Dolphin Cayman includes a 50 ft cable.
Blue Helix
Blue Helix One
Inground pools that need floor, wall and waterline cleaning.
Max-Series
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Why Dolphin Cayman is our pick
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
$1,079
Buy Dolphin CaymanBlue Helix One or Dolphin Cayman: our take
Blue Helix One and Dolphin Cayman 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
Blue Helix One is intended for inground pools, while Dolphin Cayman is intended for inground and above-ground pools. Dolphin Cayman has a published maximum pool length of 40 ft; the other model does not have a verified length in our source material. Blue Helix One cleans floor, walls, and waterline; Dolphin Cayman cleans floor and walls. Dolphin Cayman's documented cleaning system includes 1 active brush, SmartNav 2.0 navigation, and Dual 24-volt DC motors.
Filtration and debris
Blue Helix One includes Basket; Dolphin Cayman includes MaxBin.
Controls and day-to-day ownership
Blue Helix One provides a weekly timer and smartphone control; Dolphin Cayman provides a weekly timer and power-supply controls. Blue Helix One uses continuous corded power, while Dolphin Cayman uses a 50 ft corded cable.
Price, warranty and the decision
Blue Helix One is listed at $579 and Dolphin Cayman at $1,079; Blue Helix One is $500 less. Each lists a 2-year manufacturer warranty. Pool Express pick: Dolphin Cayman. Dolphin Cayman cleans floor and walls. Dolphin Cayman includes a 50 ft cable. Choose Blue Helix One when it is the better fit for shoppers prioritizing the lower $579 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 | Blue Helix One | Dolphin Cayman |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | YesEdge | No |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | YesEdge | No |
| Anti-tangle swivel | Not listed | No |
| 3-year warranty | No | No |
| No recharging between cycles | Yes | Yes |
| 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 Blue Helix One stands out
Blue Helix One is the better fit for shoppers prioritizing the lower $579 starting price.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Adds smartphone control
- Is listed $500 lower
Where Dolphin Cayman stands out
Dolphin Cayman is the better fit for inground and above-ground pools up to 40 ft that need floor and wall cleaning.
- Cleans floor and walls
- 50 ft cable
Blue Helix One vs Dolphin Cayman 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 | Blue Helix One | Dolphin Cayman |
|---|---|---|
| Best fit | Inground pools that need floor, wall and waterline cleaning. | Inground and above-ground pools up to 40 ft that need floor and wall cleaning. |
| Starting price | $579 | $1,079 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Not listed | Up to 40 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls |
| Power | Corded | Corded |
| Filtration | Basket | MaxBin |
| Scheduling | Weekly schedule + app | Weekly schedule |
| App and remote | App control | Power-supply controls |
| Cable | Not listed | 50 ft |
| Robot weight | Not listed | 14.6 lb |
| Warranty | 2 years | 2 years |
Choose Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman cleans floor and walls. Dolphin Cayman includes a 50 ft cable.
More robotic pool cleaner comparisons
Keep comparing without rebuilding the same specification table yourself.
Clear UV vs Clear S
Pool Express pick: Clear UV
Dolphin Quantum vs Clear S
Pool Express pick: Dolphin Quantum
Dolphin Premier vs Dolphin Sigma
Pool Express pick: Dolphin Premier
Dolphin Premier vs Dolphin Quantum
Pool Express pick: Dolphin Quantum
Dolphin Sigma vs Dolphin Quantum
Pool Express pick: Dolphin Quantum
Dolphin Cayman vs Dolphin Escape
Pool Express pick: Dolphin Cayman