Help me choose
A stronger Pool Express option
Dolphin Active 10 and Dolphin S300 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.
S-Line
Dolphin S300
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
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 Active 10 or Dolphin S300: our take
Dolphin Active 10 and Dolphin S300 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 10 is intended for above-ground pools, while Dolphin S300 is intended for inground pools. Dolphin Active 10 is rated for pools up to 30 ft; Dolphin S300 is rated up to 50 ft. Dolphin Active 10 cleans floor; Dolphin S300 cleans floor, walls, and waterline. Dolphin Active 10 lists 1 active brush. Dolphin S300 lists 2 active brushes and CleverClean navigation.
Filtration and debris
Dolphin Active 10 includes Basket; Dolphin S300 includes Basket and UltraFilter. Dolphin S300 has the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Active 10 provides one-touch starts and power-supply controls; Dolphin S300 provides a weekly timer and smartphone control. Dolphin Active 10 uses a 40 ft corded cable, while Dolphin S300 uses a 60 ft corded cable with an anti-tangle swivel.
Price, warranty and the decision
Dolphin Active 10 is listed at $649 and Dolphin S300 at $1,499; Dolphin Active 10 is $850 less. Each lists a 2-year manufacturer warranty. Dolphin Active 10 and Dolphin S300 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 Active 10 | Dolphin S300 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | No | YesEdge |
| Scrubs the waterline | No | YesEdge |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | No | YesEdge |
| Smartphone app | No | YesEdge |
| Anti-tangle swivel | Not listed | Yes |
| 3-year warranty | No | No |
| No recharging between cycles | Yes | Yes |
| 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 10 stands out
Dolphin Active 10 is the better fit for shoppers prioritizing the lower $649 starting price.
- Is listed $850 lower
- Cleans the pool floor
Where Dolphin S300 stands out
Dolphin S300 is the better fit for pools up to 50 ft.
- Cleans the floor, walls and waterline instead of stopping below the tile line
- Includes filtration for sand, pollen and other fine debris
- Uses 2 active brushes instead of 1
- Can start on a weekly schedule without a manual launch before every cycle
Dolphin Active 10 vs Dolphin S300 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 10 | Dolphin S300 |
|---|---|---|
| Best fit | Above-ground pools up to 30 ft that need floor cleaning. | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. |
| Starting price | $649 | $1,499 |
| Pool type | Above-ground | Inground |
| Maximum pool length | Up to 30 ft | Up to 50 ft |
| Cleaning coverage | Floor | Floor, Walls, Waterline |
| Power | Corded | Corded |
| Filtration | Basket | Basket, UltraFilter |
| Scheduling | One-touch start | Weekly schedule + app |
| App and remote | Power-supply controls | App control |
| Cable | 40 ft | 60 ft with anti-tangle swivel |
| Robot weight | 14 lb | Not listed |
| Warranty | 2 years | 2 years |
Consider the stronger Pool Express option
Dolphin Active 10 and Dolphin S300 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.
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