Help me choose
A stronger Pool Express option
Aquabot X4 and Dolphin Nautilus EON 100 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.
EON
Dolphin Nautilus EON 100
Inground and above-ground pools up to 50 ft with steps, benches or tanning ledges that need whole-pool cordless cleaning.
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 EON 100: our take
Aquabot X4 and Dolphin Nautilus EON 100 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 is rated for pools up to 60 ft; Dolphin Nautilus EON 100 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 EON 100 lists 2 active brushes and SmartMap navigation.
Filtration and debris
Both models include Basket.
Controls and day-to-day ownership
Aquabot X4 provides a weekly timer; Dolphin Nautilus EON 100 provides a weekly timer and smartphone control. Aquabot X4 uses a 60 ft corded cable with an anti-tangle swivel, while Dolphin Nautilus EON 100 uses cordless battery power. Aquabot X4 is listed at 40 lb versus 22.1 lb for Dolphin Nautilus EON 100; that 17.9 lb difference matters when lifting the robot from the pool.
Price, warranty and the decision
Aquabot X4 is listed at $747 and Dolphin Nautilus EON 100 at $899; Aquabot X4 is $152 less. Aquabot X4 lists a 2-year warranty compared with 1 years for Dolphin Nautilus EON 100. Aquabot X4 and Dolphin Nautilus EON 100 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 EON 100 |
|---|---|---|
| Cleans the pool floor | Yes | Yes |
| Climbs and cleans walls | Yes | Yes |
| Scrubs the waterline | Yes | Yes |
| Fine-debris filter included | No | No |
| Large-debris filter | Yes | Yes |
| Automatic scheduling | Yes | Yes |
| Smartphone app | Not listed | Yes |
| 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.
- Carries a 2-year warranty instead of 1 years
- Is rated for pools up to 60 ft
- Runs from continuous plug-in power without a recharge between cycles
- Is listed $152 lower
Where Dolphin Nautilus EON 100 stands out
Dolphin Nautilus EON 100 is the better fit for owners who value cordless handling more than automatic scheduling and continuous power.
- Uses 2 active brushes instead of 1
- Has documented smartphone control
- Weighs 22.1 lb versus 40 lb
Aquabot X4 vs Dolphin Nautilus EON 100 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 EON 100 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 60 ft that need floor, wall and waterline cleaning. | Inground and above-ground pools up to 50 ft with steps, benches or tanning ledges that need whole-pool cordless cleaning. |
| Starting price | $747 | $899 |
| Pool type | Inground, Above-ground | Inground, Above-ground |
| Maximum pool length | Up to 60 ft | Up to 50 ft |
| Cleaning coverage | Floor, Walls, Waterline | Floor, Walls, Waterline |
| Power | Corded | Cordless |
| Filtration | Basket | Basket |
| Scheduling | Weekly schedule | Weekly schedule + app |
| App and remote | Not listed | App control |
| Cable | 60 ft with anti-tangle swivel | Cordless |
| Robot weight | 40 lb | 22.1 lb |
| Warranty | 2 years | 1 years |
Consider the stronger Pool Express option
Aquabot X4 and Dolphin Nautilus EON 100 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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