Help me choose
A stronger Pool Express option
Dolphin Proteus DX4 and Niya Tracker 15 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
Proteus
Dolphin Proteus DX4
Inground pools that need floor, wall and waterline cleaning.
Niya Tracker
Niya Tracker 15
Above-ground pools up to 20 ft that need the floor vacuumed without a cord.
What we recommend instead
Dolphin Cayman
Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
$1,079
Buy Dolphin CaymanDolphin Proteus DX4 or Niya Tracker 15: our take
Dolphin Proteus DX4 and Niya Tracker 15 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 Proteus DX4 is intended for inground pools, while Niya Tracker 15 is intended for above-ground pools. Niya Tracker 15 has a published maximum pool length of 20 ft; the other model does not have a verified length in our source material. Dolphin Proteus DX4 cleans floor, walls, and waterline; Niya Tracker 15 cleans floor. Dolphin Proteus DX4's documented cleaning system includes 1 active brush.
Filtration and debris
Both models include Basket.
Controls and day-to-day ownership
Dolphin Proteus DX4 provides a weekly timer and power-supply controls; Niya Tracker 15 provides one-touch starts and power-supply controls. Dolphin Proteus DX4 uses a 60 ft corded cable with an anti-tangle swivel, while Niya Tracker 15 uses cordless battery power.
Price, warranty and the decision
Dolphin Proteus DX4 is listed at $1,199 and Niya Tracker 15 at $199; Niya Tracker 15 is $1,000 less. Dolphin Proteus DX4 lists a 2-year warranty compared with 1 years for Niya Tracker 15. Dolphin Proteus DX4 and Niya Tracker 15 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
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 Proteus DX4 | Niya Tracker 15 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | YesEdge | No |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | YesEdge | No |
| Smartphone app | No | No |
| Anti-tangle swivel | Yes | 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 Proteus DX4 stands out
Dolphin Proteus DX4 is the better fit for inground pools that need floor, wall and waterline cleaning.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Can start on a weekly schedule without a manual launch before every cycle
- Carries a 2-year warranty instead of 1 years
- Runs from continuous plug-in power without a recharge between cycles
Where Niya Tracker 15 stands out
Niya Tracker 15 is the better fit for shoppers prioritizing the lower $199 starting price.
- Is listed $1,000 lower
- Cleans the pool floor
Dolphin Proteus DX4 vs Niya Tracker 15 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 Proteus DX4 | Niya Tracker 15 |
|---|---|---|
| Best fit | Inground pools that need floor, wall and waterline cleaning. | Above-ground pools up to 20 ft that need the floor vacuumed without a cord. |
| Starting price | $1,199 | $199 |
| Pool type | Inground | Above-ground |
| Maximum pool length | Not listed | Up to 20 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor |
| Power | Corded | Cordless |
| Filtration | Basket | Basket |
| Scheduling | Weekly schedule | One-touch start |
| App and remote | Power-supply controls | Power-supply controls |
| Cable | 60 ft with anti-tangle swivel | Cordless |
| Robot weight | Not listed | 7.1 lb |
| Warranty | 2 years | 1 years |
Consider the stronger Pool Express option
Dolphin Proteus DX4 and Niya Tracker 15 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Cayman. Inground and above-ground pools up to 40 ft that need floor and wall cleaning.
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