Help me choose
A stronger Pool Express option
Dolphin Liberty 300 and Niya Tracker 55 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.
Liberty
Dolphin Liberty 300
Inground and above-ground pools that need floor and wall cleaning, with fine debris, without a power cord.
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.
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 Liberty 300 or Niya Tracker 55: our take
Dolphin Liberty 300 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. Niya Tracker 55 has a published maximum pool length of 40 ft; the other model does not have a verified length in our source material. Dolphin Liberty 300 cleans floor and walls; Niya Tracker 55 cleans floor, walls, and waterline. Dolphin Liberty 300 lists Dual DC motors. Niya Tracker 55 lists 2 active brushes, Sonar navigation, and Dual drive motors.
Filtration and debris
Dolphin Liberty 300 includes Basket and UltraFilter; Niya Tracker 55 includes Basket. That gives Dolphin Liberty 300 the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Liberty 300 provides no fully published timer, app or remote specification; Niya Tracker 55 provides one-touch starts and smartphone control. Both use cordless battery power.
Price, warranty and the decision
Dolphin Liberty 300 is listed at $1,099 and Niya Tracker 55 at $779; Niya Tracker 55 is $320 less. Dolphin Liberty 300 lists a 2-year warranty compared with 1.5 years for Niya Tracker 55. Dolphin Liberty 300 and Niya Tracker 55 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 Liberty 300 | Niya Tracker 55 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Not listed | No |
| Smartphone app | Not listed | Yes |
| Anti-tangle swivel | Not listed | Not listed |
| 3-year warranty | No | No |
| No recharging between cycles | No | 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 Liberty 300 stands out
Dolphin Liberty 300 is the better fit for inground and above-ground pools that need floor and wall cleaning, with fine debris, without a power cord.
- Includes filtration for sand, pollen and other fine debris
- Carries a 2-year warranty instead of 1.5 years
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
- Has documented smartphone control
- Is listed $320 lower
Dolphin Liberty 300 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 Liberty 300 | Niya Tracker 55 |
|---|---|---|
| Best fit | Inground and above-ground pools that need floor and wall cleaning, with fine debris, without a power cord. | 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 | $1,099 | $779 |
| Pool type | Inground, Above-ground | Inground, Above-ground |
| Maximum pool length | Not listed | Up to 40 ft |
| Cleaning coverage | Floor, Walls | Floor, Walls, Waterline |
| Power | Cordless | Cordless |
| Filtration | Basket, UltraFilter | Basket |
| Scheduling | Not listed | One-touch start |
| App and remote | Not listed | App control |
| Cable | Cordless | Cordless |
| Robot weight | Not listed | 19.8 lb |
| Warranty | 2 years | 1.5 years |
Consider the stronger Pool Express option
Dolphin Liberty 300 and Niya Tracker 55 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