Robotic pool cleaner comparison

Aquabot X4 vs Dolphin Liberty 200

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 X4 and Dolphin Liberty 200 are compared feature by feature below. For a stronger Pool Express option, consider Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

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Aquabot

Aquabot X4

Inground and above-ground pools up to 60 ft that need floor, wall and waterline cleaning.

Listed price $747

View better alternatives

Liberty

Dolphin Liberty 200

Inground and above-ground pools that need floor and wall cleaning, without a power cord.

Listed price $999

View better alternatives

A better alternative

What we recommend instead

Pool Express pick

Dolphin Quantum

Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

$1,649

Buy Dolphin Quantum

Buying guidance

Aquabot X4 or Dolphin Liberty 200: our take

Aquabot X4 and Dolphin Liberty 200 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 inground and above-ground pools. Aquabot X4 has a published maximum pool length of 60 ft; the other model does not have a verified length in our source material. Aquabot X4 cleans floor, walls, and waterline; Dolphin Liberty 200 cleans floor and walls. Aquabot X4 lists 1 active brush and Intelligent navigation. Dolphin Liberty 200 lists Dual DC motors.

Filtration and debris

Both models include Basket.

Controls and day-to-day ownership

Aquabot X4 provides a weekly timer; Dolphin Liberty 200 provides no fully published timer, app or remote specification. Aquabot X4 uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin Liberty 200 uses cordless battery power.

Price, warranty and the decision

Aquabot X4 is listed at $747 and Dolphin Liberty 200 at $999; Aquabot X4 is $252 less. Each lists a 2-year manufacturer warranty. Aquabot X4 and Dolphin Liberty 200 each have a specific fit, but neither is the Pool Express pick for this job. Our better alternative is Dolphin Quantum. Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.

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 X4	Dolphin Liberty 200
Cleans the pool floor	Yes	Yes
Climbs and cleans walls	Yes	Yes
Scrubs the waterline	YesEdge	No
Fine-debris filter included	No	No
Large-debris filter	Yes	Yes
Automatic scheduling	Yes	Not listed
Smartphone app	Not listed	Not listed
Anti-tangle swivel	Yes	Not listed
3-year warranty	No	No
No recharging between cycles	YesEdge	No
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 X4 stands out

Aquabot X4 is the better fit for shoppers prioritizing the lower $747 starting price.

Cleans the floor, walls and waterline instead of stopping below the tile line
Runs from continuous plug-in power without a recharge between cycles
Is listed $252 lower

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.

Cleans floor and walls
Cordless, battery powered