Help me choose
Our pick: Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman adds wall climbing and scrubbing. Dolphin Cayman can start on a weekly schedule without a manual launch before every cycle.
Max-Series
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Nautilus
Dolphin Nautilus AG
Above-ground and small inground pools up to 30 ft that need the floor vacuumed.
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 CaymanDolphin Cayman or Dolphin Nautilus AG: our take
Dolphin Cayman and Dolphin Nautilus AG 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
Dolphin Cayman is intended for inground and above-ground pools, while Dolphin Nautilus AG is intended for above-ground pools. Dolphin Cayman is rated for pools up to 40 ft; Dolphin Nautilus AG is rated up to 30 ft. Dolphin Cayman cleans floor and walls; Dolphin Nautilus AG cleans floor. Dolphin Cayman lists 1 active brush, SmartNav 2.0 navigation, and Dual 24-volt DC motors. Dolphin Nautilus AG lists 1 active brush and CleverClean navigation.
Filtration and debris
Dolphin Cayman includes MaxBin; Dolphin Nautilus AG includes Basket.
Controls and day-to-day ownership
Dolphin Cayman provides a weekly timer and power-supply controls; Dolphin Nautilus AG provides one-touch starts and power-supply controls. Dolphin Cayman uses a 50 ft corded cable, while Dolphin Nautilus AG uses continuous corded power. Both are listed at 14.6 lb, so lifting effort is effectively the same.
Price, warranty and the decision
Dolphin Cayman is listed at $1,079 and Dolphin Nautilus AG at $568; Dolphin Nautilus AG is $511 less. Dolphin Cayman lists a 2-year warranty compared with 1 years for Dolphin Nautilus AG. Pool Express pick: Dolphin Cayman. Dolphin Cayman adds wall climbing and scrubbing. Dolphin Cayman can start on a weekly schedule without a manual launch before every cycle. Choose Dolphin Nautilus AG when it is the better fit for shoppers prioritizing the lower $568 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 Cayman | Dolphin Nautilus AG |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | No | No |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | YesEdge | No |
| Smartphone app | No | No |
| Anti-tangle swivel | No | 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 Dolphin Cayman stands out
Dolphin Cayman is the better fit for pools up to 40 ft.
- Adds wall climbing and scrubbing
- Can start on a weekly schedule without a manual launch before every cycle
- Carries a 2-year warranty instead of 1 years
- Is rated for pools up to 40 ft
Where Dolphin Nautilus AG stands out
Dolphin Nautilus AG is the better fit for shoppers prioritizing the lower $568 starting price.
- Is listed $511 lower
- Cleans the pool floor
Dolphin Cayman vs Dolphin Nautilus AG 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 Cayman | Dolphin Nautilus AG |
|---|---|---|
| Best fit | Inground and above-ground pools up to 40 ft that need floor and wall cleaning. | Above-ground and small inground pools up to 30 ft that need the floor vacuumed. |
| Starting price | $1,079 | $568 |
| Pool type | Inground, Above-ground | Above-ground |
| Maximum pool length | Up to 40 ft | Up to 30 ft |
| Cleaning coverage | Floor, Walls | Floor |
| Power | Corded | Corded |
| Filtration | MaxBin | Basket |
| Scheduling | Weekly schedule | One-touch start |
| App and remote | Power-supply controls | Power-supply controls |
| Cable | 50 ft | Not listed |
| Robot weight | 14.6 lb | 14.6 lb |
| Warranty | 2 years | 1 years |
Choose Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman adds wall climbing and scrubbing. Dolphin Cayman can start on a weekly schedule without a manual launch before every cycle.
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