Help me choose
A stronger Pool Express option
Dolphin Liberty 300 and Polaris 9300 Sport Pool Cleaner F9300 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.
Liberty
Dolphin Liberty 300
Inground and above-ground pools that need floor and wall cleaning, with fine debris, without a power cord.
Polaris
Polaris 9300 Sport Pool Cleaner F9300
Pools that need floor cleaning.
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 Liberty 300 or Polaris 9300 Sport Pool Cleaner F9300: our take
Dolphin Liberty 300 and Polaris 9300 Sport Pool Cleaner F9300 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 Liberty 300 cleans floor and walls; Polaris 9300 Sport Pool Cleaner F9300 cleans floor. Dolphin Liberty 300's documented cleaning system includes Dual DC motors.
Filtration and debris
Dolphin Liberty 300 has documented included filtration—Basket and UltraFilter—while the other model's included media is not fully published. That gives Dolphin Liberty 300 the clearer documented edge for fine silt, pollen and sand. Dolphin Liberty 300 also has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Liberty 300 provides no fully published timer, app or remote specification; Polaris 9300 Sport Pool Cleaner F9300 provides daily scheduling. Dolphin Liberty 300 uses cordless battery power, while Polaris 9300 Sport Pool Cleaner F9300 uses a 60 ft corded cable.
Price, warranty and the decision
Dolphin Liberty 300 is listed at $1,099 and Polaris 9300 Sport Pool Cleaner F9300 at $1,393.60; Dolphin Liberty 300 is $294.60 less. Dolphin Liberty 300 and Polaris 9300 Sport Pool Cleaner F9300 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 Liberty 300 | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | No | No |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | YesEdge | No |
| Automatic scheduling | Not listed | Yes |
| Smartphone app | Not listed | Not listed |
| Anti-tangle swivel | Not listed | Not listed |
| 3-year warranty | No | Not listed |
| No recharging between cycles | No | YesEdge |
| 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 shoppers prioritizing the lower $1,099 starting price.
- Adds wall climbing and scrubbing
- Includes filtration for sand, pollen and other fine debris
- Includes a large-debris bin or bag for leaves
- Is listed $294.60 lower
Where Polaris 9300 Sport Pool Cleaner F9300 stands out
Polaris 9300 Sport Pool Cleaner F9300 is the better fit for pools that need floor cleaning.
- Runs from continuous plug-in power without a recharge between cycles
- Cleans the pool floor
Dolphin Liberty 300 vs Polaris 9300 Sport Pool Cleaner F9300 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 | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Best fit | Inground and above-ground pools that need floor and wall cleaning, with fine debris, without a power cord. | Pools that need floor cleaning. |
| Starting price | $1,099 | $1,393.60 |
| Pool type | Inground, Above-ground | Not listed |
| Maximum pool length | Not listed | Not listed |
| Cleaning coverage | Floor, Walls | Floor |
| Power | Cordless | Corded |
| Filtration | Basket, UltraFilter | Not listed |
| Scheduling | Not listed | Daily schedule |
| App and remote | Not listed | Not listed |
| Cable | Cordless | 60 ft |
| Robot weight | Not listed | 18 lb |
| Warranty | 2 years | Not listed |
Consider the stronger Pool Express option
Dolphin Liberty 300 and Polaris 9300 Sport Pool Cleaner F9300 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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