Help me choose
A stronger Pool Express option
Dolphin Nautilus AG and Dolphin S50 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Escape. Inground and above-ground pools up to 30 ft that need floor cleaning.
Nautilus
Dolphin Nautilus AG
Above-ground and small inground pools up to 30 ft that need the floor vacuumed.
What we recommend instead
Dolphin Escape
Inground and above-ground pools up to 30 ft that need floor cleaning.
$669
Buy Dolphin EscapeDolphin Nautilus AG or Dolphin S50: our take
Dolphin Nautilus AG 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
Both robots are intended for above-ground pools. Both are rated for pools up to 30 ft. Each cleans floor, so coverage alone does not separate them. Dolphin Nautilus AG lists 1 active brush and CleverClean navigation. Dolphin S50 lists 1 active brush.
Filtration and debris
Both models include Basket.
Controls and day-to-day ownership
Both models provide one-touch starts and power-supply controls. Dolphin Nautilus AG uses continuous corded power, while Dolphin S50 uses a 40 ft corded cable. Dolphin Nautilus AG is listed at 14.6 lb versus 14 lb for Dolphin S50; that 0.5999999999999996 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Dolphin Nautilus AG is listed at $568 and Dolphin S50 at $649; Dolphin Nautilus AG is $81 less. Dolphin Nautilus AG lists a 1-year warranty compared with 2 years for Dolphin S50. Dolphin Nautilus AG and Dolphin S50 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Escape. Inground and above-ground pools up to 30 ft that need floor 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 Nautilus AG | Dolphin S50 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | No | No |
| Scrubs the waterline | No | No |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | No | No |
| Smartphone app | No | No |
| Anti-tangle swivel | No | 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 Nautilus AG stands out
Dolphin Nautilus AG is the better fit for shoppers prioritizing the lower $568 starting price.
- Is listed $81 lower
- 1.5-hour cycle, pools up to 30 ft
Where Dolphin S50 stands out
Dolphin S50 is the better fit for above-ground pools up to 30 ft that need floor cleaning.
- Carries a 2-year warranty instead of 1 years
- Weighs 14 lb versus 14.6 lb
Dolphin Nautilus AG 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 Nautilus AG | Dolphin S50 |
|---|---|---|
| Best fit | Above-ground and small inground pools up to 30 ft that need the floor vacuumed. | Above-ground pools up to 30 ft that need floor cleaning. |
| Starting price | $568 | $649 |
| Pool type | Above-ground | Above-ground |
| Maximum pool length | Up to 30 ft | Up to 30 ft |
| Cleaning coverage | Floor | Floor |
| Power | Corded | Corded |
| Filtration | Basket | Basket |
| Scheduling | One-touch start | One-touch start |
| App and remote | Power-supply controls | Power-supply controls |
| Cable | Not listed | 40 ft |
| Robot weight | 14.6 lb | 14 lb |
| Warranty | 1 years | 2 years |
Consider the stronger Pool Express option
Dolphin Nautilus AG and Dolphin S50 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Escape. Inground and above-ground pools up to 30 ft that need floor cleaning.
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