Help me choose
A stronger Pool Express option
Dolphin Active 30 and Dolphin S50 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.
Active
Dolphin Active 30
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 30 or Dolphin S50: our take
Dolphin Active 30 and Dolphin S50 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 30 is intended for inground pools, while Dolphin S50 is intended for above-ground pools. Dolphin Active 30 is rated for pools up to 50 ft; Dolphin S50 is rated up to 30 ft. Dolphin Active 30 cleans floor, walls, and waterline; Dolphin S50 cleans floor. Dolphin Active 30 lists 1 active brush and CleverClean navigation. Dolphin S50 lists 1 active brush.
Filtration and debris
Dolphin Active 30 includes Basket and UltraFilter; Dolphin S50 includes Basket. That gives Dolphin Active 30 the clearer documented edge for fine silt, pollen and sand.
Controls and day-to-day ownership
Dolphin Active 30 provides a weekly timer, smartphone control, and included remote control; Dolphin S50 provides one-touch starts and power-supply controls. Dolphin Active 30 uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin S50 uses a 40 ft corded cable.
Price, warranty and the decision
Dolphin Active 30 is listed at $1,499 and Dolphin S50 at $649; Dolphin S50 is $850 less. Each lists a 2-year manufacturer warranty. Dolphin Active 30 and Dolphin S50 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 30 | Dolphin S50 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | YesEdge | No |
| Fine-debris filter included | YesEdge | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | YesEdge | No |
| Smartphone app | YesEdge | No |
| Anti-tangle swivel | Yes | Not listed |
| 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 30 stands out
Dolphin Active 30 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
- Can start on a weekly schedule without a manual launch before every cycle
- Adds smartphone control
Where Dolphin S50 stands out
Dolphin S50 is the better fit for shoppers prioritizing the lower $649 starting price.
- Is listed $850 lower
- Cleans the pool floor
Dolphin Active 30 vs Dolphin S50 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 30 | Dolphin S50 |
|---|---|---|
| Best fit | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. | Above-ground pools up to 30 ft that need floor cleaning. |
| Starting price | $1,499 | $649 |
| Pool type | Inground | Above-ground |
| Maximum pool length | Up to 50 ft | Up to 30 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor |
| Power | Corded | Corded |
| Filtration | Basket, UltraFilter | Basket |
| Scheduling | Weekly schedule + app | One-touch start |
| App and remote | App + included remote | Power-supply controls |
| Cable | 60 ft with anti-tangle swivel | 40 ft |
| Robot weight | Not listed | 14 lb |
| Warranty | 2 years | 2 years |
Consider the stronger Pool Express option
Dolphin Active 30 and Dolphin S50 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