Help me choose
A stronger Pool Express option
Dolphin Active 40 and Niya Tracker 35 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Active
Dolphin Active 40
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
Niya Tracker
Niya Tracker 35
Inground and above-ground pools up to 40 ft that need floor, wall and waterline cleaning without a cord.
What we recommend instead
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumDolphin Active 40 or Niya Tracker 35: our take
Dolphin Active 40 and Niya Tracker 35 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 Active 40 is intended for inground pools, while Niya Tracker 35 is intended for inground and above-ground pools. Dolphin Active 40 is rated for pools up to 50 ft; Niya Tracker 35 is rated up to 40 ft. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Dolphin Active 40 lists 1 active brush and CleverClean navigation. Niya Tracker 35 lists 2 active brushes, Sonar navigation, and Dual drive motors.
Filtration and debris
Dolphin Active 40 includes Basket and UltraFilter; Niya Tracker 35 includes Basket. That gives Dolphin Active 40 the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Active 40 provides a weekly timer and smartphone control; Niya Tracker 35 provides one-touch starts. Dolphin Active 40 uses a 60 ft corded cable with an anti-tangle swivel, while Niya Tracker 35 uses cordless battery power.
Price, warranty and the decision
Dolphin Active 40 is listed at $1,799 and Niya Tracker 35 at $539; Niya Tracker 35 is $1,260 less. Dolphin Active 40 lists a 2-year warranty compared with 1.5 years for Niya Tracker 35. Dolphin Active 40 and Niya Tracker 35 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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 Active 40 | Niya Tracker 35 |
|---|---|---|
| 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 | Yes | Yes |
| Automatic scheduling | YesEdge | No |
| Smartphone app | Yes | Not listed |
| 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 Active 40 stands out
Dolphin Active 40 is the better fit for pools up to 50 ft.
- Includes filtration for sand, pollen and other fine debris
- Can start on a weekly schedule without a manual launch before every cycle
- Has documented smartphone control
- Carries a 2-year warranty instead of 1.5 years
Where Niya Tracker 35 stands out
Niya Tracker 35 is the better fit for shoppers prioritizing the lower $539 starting price.
- Uses 2 active brushes instead of 1
- Is listed $1,260 lower
Dolphin Active 40 vs Niya Tracker 35 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 Active 40 | Niya Tracker 35 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. | Inground and above-ground pools up to 40 ft that need floor, wall and waterline cleaning without a cord. |
| Starting price | $1,799 | $539 |
| Pool type | Inground | Inground, Above-ground |
| Maximum pool length | Up to 50 ft | Up to 40 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Corded | Cordless |
| Filtration | Basket, UltraFilter | Basket |
| Scheduling | Weekly schedule + app | One-touch start |
| App and remote | App control | Not listed |
| Cable | 60 ft with anti-tangle swivel | Cordless |
| Robot weight | Not listed | 19.2 lb |
| Warranty | 2 years | 1.5 years |
Consider the stronger Pool Express option
Dolphin Active 40 and Niya Tracker 35 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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