Help me choose
A stronger Pool Express option
Dolphin Nautilus Pool Up and Polaris 9300 Sport Pool Cleaner F9300 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.
Nautilus
Dolphin Nautilus Pool Up
Inground and above-ground pools up to 30 ft that need floor and wall cleaning, with heavy leaves.
Polaris
Polaris 9300 Sport Pool Cleaner F9300
Pools that need floor cleaning.
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 Nautilus Pool Up or Polaris 9300 Sport Pool Cleaner F9300: our take
Dolphin Nautilus Pool Up and Polaris 9300 Sport Pool Cleaner F9300 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 Nautilus Pool Up has a published maximum pool length of 30 ft; the other model does not have a verified length in our source material. Dolphin Nautilus Pool Up cleans floor and walls; Polaris 9300 Sport Pool Cleaner F9300 cleans floor. Dolphin Nautilus Pool Up's documented cleaning system includes 1 active brush.
Filtration and debris
Dolphin Nautilus Pool Up has documented included filtration—Oversized leaf bag—while the other model's included media is not fully published. Dolphin Nautilus Pool Up also has the better documented path for bulky leaves and larger debris.
Controls and day-to-day ownership
Dolphin Nautilus Pool Up provides one-touch starts and power-supply controls; Polaris 9300 Sport Pool Cleaner F9300 provides daily scheduling. Dolphin Nautilus Pool Up uses a 40 ft corded cable, while Polaris 9300 Sport Pool Cleaner F9300 uses a 60 ft corded cable. Both are listed at 18 lb, so lifting effort is effectively the same.
Price, warranty and the decision
Dolphin Nautilus Pool Up is listed at $499 and Polaris 9300 Sport Pool Cleaner F9300 at $1,393.60; Dolphin Nautilus Pool Up is $894.60 less. Dolphin Nautilus Pool Up and Polaris 9300 Sport Pool Cleaner F9300 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 Nautilus Pool Up | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| 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 | YesEdge | No |
| Automatic scheduling | No | YesEdge |
| Smartphone app | No | Not listed |
| Anti-tangle swivel | Not listed | Not listed |
| 3-year warranty | No | Not listed |
| 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 Dolphin Nautilus Pool Up stands out
Dolphin Nautilus Pool Up is the better fit for shoppers prioritizing the lower $499 starting price.
- Adds wall climbing and scrubbing
- Includes an oversized leaf bag for bulky seasonal debris
- Includes a large-debris bin or bag for leaves
- Is listed $894.60 lower
Where Polaris 9300 Sport Pool Cleaner F9300 stands out
Polaris 9300 Sport Pool Cleaner F9300 is the better fit for pools that need floor cleaning.
- Cleans the pool floor
- 60 ft cable
Dolphin Nautilus Pool Up vs Polaris 9300 Sport Pool Cleaner F9300 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 Nautilus Pool Up | Polaris 9300 Sport Pool Cleaner F9300 |
|---|---|---|
| Best fit | Inground and above-ground pools up to 30 ft that need floor and wall cleaning, with heavy leaves. | Pools that need floor cleaning. |
| Starting price | $499 | $1,393.60 |
| Pool type | Inground, Above-ground | Not listed |
| Maximum pool length | Up to 30 ft | Not listed |
| Cleaning coverage | Floor, Walls | Floor |
| Power | Corded | Corded |
| Filtration | Oversized leaf bag | Not listed |
| Scheduling | One-touch start | Daily schedule |
| App and remote | Power-supply controls | Not listed |
| Cable | 40 ft | 60 ft |
| Robot weight | 18 lb | 18 lb |
| Warranty | 2 years | Not listed |
Consider the stronger Pool Express option
Dolphin Nautilus Pool Up and Polaris 9300 Sport Pool Cleaner F9300 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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