Help me choose
A stronger Pool Express option
Aquabot X4 and Dolphin Nautilus CC Supreme 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.
Aquabot
Aquabot X4
Inground and above-ground pools up to 60 ft that need floor, wall and waterline cleaning.
Nautilus
Dolphin Nautilus CC Supreme
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
What we recommend instead
Dolphin Quantum
Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
$1,649
Buy Dolphin QuantumAquabot X4 or Dolphin Nautilus CC Supreme: our take
Aquabot X4 and Dolphin Nautilus CC Supreme 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 X4 is intended for inground and above-ground pools, while Dolphin Nautilus CC Supreme is intended for inground pools. Aquabot X4 is rated for pools up to 60 ft; Dolphin Nautilus CC Supreme is rated up to 50 ft. Each cleans floor, walls, and waterline, so coverage alone does not separate them. Aquabot X4 lists 1 active brush and Intelligent navigation. Dolphin Nautilus CC Supreme lists 2 active brushes and CleverClean navigation.
Filtration and debris
Aquabot X4 includes Basket; Dolphin Nautilus CC Supreme includes Standard filter and UltraFilter. Dolphin Nautilus CC Supreme has the clearer documented edge for fine silt, pollen and sand. Aquabot X4 also has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Aquabot X4 provides a weekly timer; Dolphin Nautilus CC Supreme provides a weekly timer, smartphone control, and included remote control. Both use a 60 ft corded cable with an anti-tangle swivel.
Price, warranty and the decision
Aquabot X4 is listed at $747 and Dolphin Nautilus CC Supreme at $1,599; Aquabot X4 is $852 less. Aquabot X4 lists a 2-year warranty compared with 3 years for Dolphin Nautilus CC Supreme. Aquabot X4 and Dolphin Nautilus CC Supreme 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 Nautilus CC Supreme |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | No | YesEdge |
| Large-debris filter | YesEdge | No |
| Automatic scheduling | Yes | Yes |
| Smartphone app | Not listed | Yes |
| Anti-tangle swivel | Yes | Yes |
| 3-year warranty | No | YesEdge |
| 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 Aquabot X4 stands out
Aquabot X4 is the better fit for shoppers prioritizing the lower $747 starting price.
- Includes a large-debris bin or bag for leaves
- Is rated for pools up to 60 ft
- Is listed $852 lower
Where Dolphin Nautilus CC Supreme stands out
Dolphin Nautilus CC Supreme is the better fit for inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris.
- Includes filtration for sand, pollen and other fine debris
- Uses 2 active brushes instead of 1
- Has documented smartphone control
- Carries a 3-year warranty instead of 2 years
Aquabot X4 vs Dolphin Nautilus CC Supreme 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 | Aquabot X4 | Dolphin Nautilus CC Supreme |
|---|---|---|
| Best fit | Inground and above-ground pools up to 60 ft that need floor, wall and waterline cleaning. | Inground pools up to 50 ft that need floor, wall and waterline cleaning, with fine debris. |
| Starting price | $747 | $1,599 |
| Pool type | Inground, Above-ground | Inground |
| Maximum pool length | Up to 60 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Corded | Corded |
| Filtration | Basket | Standard filter, UltraFilter |
| Scheduling | Weekly schedule | Weekly schedule + app |
| App and remote | Not listed | App + included remote |
| Cable | 60 ft with anti-tangle swivel | 60 ft with anti-tangle swivel |
| Robot weight | 40 lb | Not listed |
| Warranty | 2 years | 3 years |
Consider the stronger Pool Express option
Aquabot X4 and Dolphin Nautilus CC Supreme 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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