Help me choose
Our pick: Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman can start on a weekly schedule without a manual launch before every cycle. Dolphin Cayman carries a 2-year warranty instead of 1.5 years.
Max-Series
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Niya Tracker
Niya Tracker 55
Inground and above-ground pools up to 40 ft that need floor, wall and waterline cleaning without a cord, with app-selected modes.
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 Niya Tracker 55: our take
Dolphin Cayman and Niya Tracker 55 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 and above-ground pools. Both are rated for pools up to 40 ft. Dolphin Cayman cleans floor and walls; Niya Tracker 55 cleans floor, walls, and waterline. Dolphin Cayman lists 1 active brush, SmartNav 2.0 navigation, and Dual 24-volt DC motors. Niya Tracker 55 lists 2 active brushes, Sonar navigation, and Dual drive motors.
Filtration and debris
Dolphin Cayman includes MaxBin; Niya Tracker 55 includes Basket.
Controls and day-to-day ownership
Dolphin Cayman provides a weekly timer and power-supply controls; Niya Tracker 55 provides one-touch starts and smartphone control. Dolphin Cayman uses a 50 ft corded cable, while Niya Tracker 55 uses cordless battery power. Dolphin Cayman is listed at 14.6 lb versus 19.8 lb for Niya Tracker 55; that 5.200000000000001 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Cayman is listed at $1,079 and Niya Tracker 55 at $779; Niya Tracker 55 is $300 less. Dolphin Cayman lists a 2-year warranty compared with 1.5 years for Niya Tracker 55. Pool Express pick: Dolphin Cayman. Dolphin Cayman can start on a weekly schedule without a manual launch before every cycle. Dolphin Cayman carries a 2-year warranty instead of 1.5 years. Choose Niya Tracker 55 when it is the better fit for shoppers prioritizing the lower $779 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 | Niya Tracker 55 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | YesEdge | No |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | No | Not listed |
| 3-year warranty | No | No |
| No recharging between cycles | YesEdge | No |
| 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 inground and above-ground pools up to 40 ft that need floor and wall cleaning.
- Can start on a weekly schedule without a manual launch before every cycle
- Carries a 2-year warranty instead of 1.5 years
- Runs from continuous plug-in power without a recharge between cycles
- Weighs 14.6 lb versus 19.8 lb
Where Niya Tracker 55 stands out
Niya Tracker 55 is the better fit for shoppers prioritizing the lower $779 starting price.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Uses 2 active brushes instead of 1
- Adds smartphone control
- Is listed $300 lower
Dolphin Cayman vs Niya Tracker 55 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 | Niya Tracker 55 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 40 ft that need floor and wall cleaning. | Inground and above-ground pools up to 40 ft that need floor, wall and waterline cleaning without a cord, with app-selected modes. |
| Starting price | $1,079 | $779 |
| Pool type | Inground, Above-ground | Inground, Above-ground |
| Maximum pool length | Up to 40 ft | Up to 40 ft |
| Cleaning coverage | Floor, Walls | Floor, Walls, Waterline |
| Power | Corded | Cordless |
| Filtration | MaxBin | Basket |
| Scheduling | Weekly schedule | One-touch start |
| App and remote | Power-supply controls | App control |
| Cable | 50 ft | Cordless |
| Robot weight | 14.6 lb | 19.8 lb |
| Warranty | 2 years | 1.5 years |
Choose Dolphin Cayman
Dolphin Cayman is the Pool Express pick in this matchup. Dolphin Cayman can start on a weekly schedule without a manual launch before every cycle. Dolphin Cayman carries a 2-year warranty instead of 1.5 years.
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