Help me choose
A stronger Pool Express option
Dolphin Liberty 200 and Dolphin Nautilus AG 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 200
Inground and above-ground pools that need floor and wall cleaning, without a power cord.
Nautilus
Dolphin Nautilus AG
Above-ground and small inground pools up to 30 ft that need the floor vacuumed.
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 200 or Dolphin Nautilus AG: our take
Dolphin Liberty 200 and Dolphin Nautilus AG 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 200 is intended for inground and above-ground pools, while Dolphin Nautilus AG is intended for above-ground pools. Dolphin Nautilus AG has a published maximum pool length of 30 ft; the other model does not have a verified length in our source material. Dolphin Liberty 200 cleans floor and walls; Dolphin Nautilus AG cleans floor. Dolphin Liberty 200 lists Dual DC motors. Dolphin Nautilus AG lists 1 active brush and CleverClean navigation.
Filtration and debris
Both models include Basket.
Controls and day-to-day ownership
Dolphin Liberty 200 provides no fully published timer, app or remote specification; Dolphin Nautilus AG provides one-touch starts and power-supply controls. Dolphin Liberty 200 uses cordless battery power, while Dolphin Nautilus AG uses continuous corded power.
Price, warranty and the decision
Dolphin Liberty 200 is listed at $999 and Dolphin Nautilus AG at $568; Dolphin Nautilus AG is $431 less. Dolphin Liberty 200 lists a 2-year warranty compared with 1 years for Dolphin Nautilus AG. Dolphin Liberty 200 and Dolphin Nautilus AG 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 200 | Dolphin Nautilus AG |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | YesEdge | No |
| Scrubs the waterline | No | No |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Not listed | No |
| Smartphone app | Not listed | No |
| Anti-tangle swivel | Not listed | No |
| 3-year warranty | No | No |
| 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 200 stands out
Dolphin Liberty 200 is the better fit for owners who value cordless handling more than automatic scheduling and continuous power.
- Adds wall climbing and scrubbing
- Carries a 2-year warranty instead of 1 years
Where Dolphin Nautilus AG stands out
Dolphin Nautilus AG is the better fit for shoppers prioritizing the lower $568 starting price.
- Runs from continuous plug-in power without a recharge between cycles
- Is listed $431 lower
Dolphin Liberty 200 vs Dolphin Nautilus AG 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 200 | Dolphin Nautilus AG |
|---|---|---|
| Best fit | Inground and above-ground pools that need floor and wall cleaning, without a power cord. | Above-ground and small inground pools up to 30 ft that need the floor vacuumed. |
| Starting price | $999 | $568 |
| Pool type | Inground, Above-ground | Above-ground |
| Maximum pool length | Not listed | Up to 30 ft |
| Cleaning coverage | Floor, Walls | Floor |
| Power | Cordless | Corded |
| Filtration | Basket | Basket |
| Scheduling | Not listed | One-touch start |
| App and remote | Not listed | Power-supply controls |
| Cable | Cordless | Not listed |
| Robot weight | Not listed | 14.6 lb |
| Warranty | 2 years | 1 years |
Consider the stronger Pool Express option
Dolphin Liberty 200 and Dolphin Nautilus AG 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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