Robotic pool cleaner comparison

Aquabot X2 vs Dolphin Nautilus AG

A side-by-side comparison of pool fit, cleaning coverage, filtration, controls and the better Pool Express option.

By Brian Williamson, Pool Express product specialist
Updated November 9, 2026

Better alternative

A stronger Pool Express option

Aquabot X2 and Dolphin Nautilus AG 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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Aquabot

Aquabot X2

Inground and above-ground pools up to 40 ft that need floor cleaning.

Listed price $497

View better alternatives

Nautilus

Dolphin Nautilus AG

Above-ground and small inground pools up to 30 ft that need the floor vacuumed.

Listed price $568

View better alternatives

A better alternative

What we recommend instead

Pool Express pick

Dolphin Escape

Inground and above-ground pools up to 30 ft that need floor cleaning.

$669

Buy Dolphin Escape

Buying guidance

Aquabot X2 or Dolphin Nautilus AG: our take

Aquabot X2 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

Aquabot X2 is intended for inground and above-ground pools, while Dolphin Nautilus AG is intended for above-ground pools. Aquabot X2 is rated for pools up to 40 ft; Dolphin Nautilus AG is rated up to 30 ft. Each cleans floor, so coverage alone does not separate them. Aquabot X2 lists 1 active brush. Dolphin Nautilus AG lists 1 active brush and CleverClean navigation.

Filtration and debris

Dolphin Nautilus AG has documented included filtration—Basket—while the other model's included media is not fully published. Dolphin Nautilus AG has the better documented path for bulky leaves and larger debris.

Controls and day-to-day ownership

Aquabot X2 provides no fully published timer, app or remote specification; Dolphin Nautilus AG provides one-touch starts and power-supply controls.

Price, warranty and the decision

Aquabot X2 is listed at $497 and Dolphin Nautilus AG at $568; Aquabot X2 is $71 less. Aquabot X2 lists a 2-year warranty compared with 1 years for Dolphin Nautilus AG. Aquabot X2 and Dolphin Nautilus AG 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	Aquabot X2	Dolphin Nautilus AG
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	No	YesEdge
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	Not listed	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 Aquabot X2 stands out

Aquabot X2 is the better fit for shoppers prioritizing the lower $497 starting price.

Carries a 2-year warranty instead of 1 years
Is rated for pools up to 40 ft
Is listed $71 lower

Where Dolphin Nautilus AG stands out

Dolphin Nautilus AG is the better fit for above-ground and small inground pools up to 30 ft that need the floor vacuumed.

Includes a large-debris bin or bag for leaves
1.5-hour cycle, pools up to 30 ft