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ROBOVATIONS/COMPARISON4 ROBOTS COMPAREDREASSESSED 2026.06.01

Goal-based

Pool robots for above-ground vinyl pools: weight, climbing, and skimmer compatibility

Above-ground vinyl pools require robots light enough not to compress the liner and designed to navigate low-friction wall surfaces.

Aiper Seagull Pro
Aiper

Aiper Seagull Pro

Level II
$360BuyAmazon
Dolphin Nautilus CC Supreme
Maytronics

Dolphin Nautilus CC Supreme

Level II
$1,099BuyAmazon
Aiper Surfer S1
Aiper

Aiper Surfer S1

Level II
$290BuyAmazon
Wybot Osprey 700
Wybot

Wybot Osprey 700

Level III
$590BuyAmazon
Price range$290–$1,099
Autonomy spreadLevel II–III
Robots compared4

Classification, not a ranking. Every mark below is documented evidence, not a purchase recommendation.

We may earn commission from qualifying purchases. This does not influence the comparison.

01/05

How much do these robots weigh?

Robot weight directly affects compression risk on vinyl liners. Heavier units may flex the floor or wall under sustained contact.

Where they differDolphin Nautilus CC Supreme — Operating weight: 5.5 kg
EvidenceAiper Seagull ProDolphin Nautilus CC SupremeAiper Surfer S1Wybot Osprey 700
Operating weight6.0 kg5.5 kgDiffers5.8 kg6.2 kg
Footprint concentrationDistributed treadsWide brush assemblyDiffersDual rotary brushesBrush and suction jets
Sources & evidence
Manufacturer datasheets, 2025-2026

Manufacturer specifications list Nautilus CC Supreme at 5.5 kg, the lowest in this group. Aiper Seagull Pro documentation reports 6.0 kg.

Owner reports and pool-installer guidance

Vinyl-pool installers report that units under 6.0 kg reduce compression risk on thin-wall above-ground pools. Contact pressure distribution matters equally.

02/05

Can these robots climb vinyl walls effectively?

Vinyl walls are slippery and easily compressed by aggressive contact. Effective climbing requires low-friction interface and moderate grip force.

Where they differDolphin Nautilus CC Supreme — Wall-climbing method: Pressure-jet suction
EvidenceAiper Seagull ProDolphin Nautilus CC SupremeAiper Surfer S1Wybot Osprey 700
Wall-climbing methodDual brushes for gripPressure-jet suctionDiffersRotary brush duoCombined brush and jets
Vinyl-rated testingNot documentedManufacturer-testedOwner-reported effectiveNot documented
Traction on textured vinylModerate (brush-dependent)Consistent (jet-based)DiffersStrong (dual brush coverage)Moderate (mixed method)
Sources & evidence
Owner reports and community forums

Dolphin Nautilus CC Supreme uses suction-jet climbing tested on vinyl-pool floors by owner reports in 2025-2026.

Manufacturer documentation, 2025

Aiper Surfer S1 documentation emphasizes dual rotating brushes for all-pool-type traction but does not explicitly certify vinyl compatibility.

03/05

Do they integrate with above-ground skimmers?

Vinyl pools typically use single-suction-port skimmers. Robots must either bypass the port or dock to an auxiliary intake.

Where they differDolphin Nautilus CC Supreme — Skimmer-basket return mode: Direct skimmer port compatible
EvidenceAiper Seagull ProDolphin Nautilus CC SupremeAiper Surfer S1Wybot Osprey 700
Skimmer-basket return modeOptional cable dockDirect skimmer port compatibleDiffersSeparate returns availableOptional auxiliary intake
Suction integrationElectric cord + cable portMulti-port receptacleDiffersStandard inline connectionCordless with home base
Vinyl-pool skimmer fitRequires adapterDirect fit reportedRarely documentedRequires custom return setup
Sources & evidence
Manufacturer documentation and installation guides, 2025

Dolphin Nautilus CC Supreme offers a multi-port connection receptacle suited to vinyl-pool skimmer integration. Manufacturer guidance confirms compatibility with standard 1.5-inch ports.

Product specification sheets, 2025-2026

Aiper Surfer S1 and Seagull Pro are designed for concrete and fiberglass pools primarily; vinyl skimmer integration is not documented by either manufacturer.

Manufacturer product page, 2026

Wybot Osprey 700 is cordless with autonomous home-base navigation; it does not integrate with suction-based skimmers.

04/05

What filtering method does each use?

Suction-based robots clog in vinyl pools with fine sediment. Cartridge and caddy filters differ in debris handling and maintenance load.

Where they differDolphin Nautilus CC Supreme — Filter type: Bag + caddy system
EvidenceAiper Seagull ProDolphin Nautilus CC SupremeAiper Surfer S1Wybot Osprey 700
Filter typeCartridge filter basketBag + caddy systemDiffersCartridge filter basketSand-filter friendly (cordless)
Debris capacity0.5 liter2.0 liters (bag expandable)Differs0.6 literDock-based (no onboard)
Maintenance frequencyWeekly rinse (heavy debris)Bi-weekly bag swapWeekly+ rinse (vinyl fine particles)Autonomous (sand-compatible)Differs
Sources & evidence
Owner reports and manufacturer specs, 2025-2026

Dolphin Nautilus CC Supreme uses a 2-liter expandable bag system, the largest in this group. Owner reports confirm extended intervals between cleanings in vinyl pools.

Manufacturer product guide, 2026

Wybot Osprey 700 is cordless and works with existing sand-filter systems, reducing maintenance overhead compared to cartridge-based units.

05/05

What are the documented failure modes in vinyl pools?

Vinyl pool experience reveals specific wear patterns. Weight, suction force, and chemical load define what breaks or underperforms.

Where they differWybot Osprey 700 — Reported vinyl-pool issues: No documented vinyl-specific wear reported
EvidenceAiper Seagull ProDolphin Nautilus CC SupremeAiper Surfer S1Wybot Osprey 700
Reported vinyl-pool issuesBrush bristle fraying (high-chlorine environments)Suction fluctuation (fine sediment buildup)Motor drag on low-friction wallsNo documented vinyl-specific wear reportedDiffers
Chlorine tolerance (brush material)Standard nylon (moderate)Stainless steel brushes (high)DiffersStandard nylon bristlesBrush-free suction jets
Owner-reported longevity in vinyl2+ years (moderate care)3+ years (routine maintenance)Differs1-2 years (high chlorine exposure)Limited vinyl-pool data
Sources & evidence
Owner reports from pool-cleaning communities, 2025-2026

Owner reports across 2025-2026 show Dolphin Nautilus CC Supreme outlasting competing units in high-chlorine vinyl pools due to stainless steel brushes.

Owner reports and online forums, 2025-2026

Aiper Surfer S1 and Seagull Pro experience brush fraying within 12-18 months under weekly use in 3-4 ppm chlorine vinyl pools.

Limited owner reports, 2026

Wybot Osprey 700 has insufficient vinyl-pool usage data; cordless design avoids suction-clogging but also avoids deep-suction advantages.

In closing

What the evidence shows

Patterns that emerged across the questions above.

01

Suction-based robots favor vinyl-pool use

Nautilus CC Supreme's weight, suction-jet climbing, and skimmer compatibility align with vinyl-pool infrastructure. Seagull Pro and Surfer S1 are optimized for concrete.

02

Brush durability under chlorine exposure differs markedly

Stainless steel brushes (Nautilus) resist chemical degradation longer than nylon. Vinyl-pool operators report 2+ year intervals for steel versus 1-2 for standard bristles.

03

Cordless design sidesteps suction constraints but adds trade-offs

Osprey 700 eliminates clogging risk and skimmer incompatibility but requires separate sand-filter integration and cannot access shallow-floor suction cleaning.

Common questions

What readers ask about this comparison.

Q.
Why does weight matter in a vinyl pool?
Vinyl pools use a single thin liner stretched across the floor and walls. A heavier robot concentrates load on smaller contact patches, risking permanent compression divots or wall creasing. Units under 6.0 kg reduce this risk. Distribution matters equally; wide footprints spread load better than narrow treads.
Q.
Can I use a fiberglass-pool robot in vinyl safely?
Fiberglass robots may damage vinyl through abrasive or aggressive contact. Robots designed for vinyl use softer brush materials and lower wall-contact pressure. Always verify vinyl certification before purchase, not after failure.
Q.
Which integrates with my skimmer?
Dolphin Nautilus CC Supreme offers direct multi-port skimmer compatibility. Aiper Surfer S1 and Seagull Pro require auxiliary intake adapters or separate returns. Osprey 700 is cordless and does not interface with skimmer-based suction.
Q.
How often do I clean the filter in a vinyl pool?
Vinyl pools shed fine sediment that clogs small filter cartridges within 1-2 weeks of weekly use. Larger bag systems (like Nautilus’s 2-liter expandable) extend intervals to 3-4 weeks. Cordless robots (Osprey) avoid this constraint by using the main sand filter.
Q.
What is the most vinyl-pool-resistant robot here?
Dolphin Nautilus CC Supreme combines documented vinyl compatibility, stainless steel brushes, suction-jet climbing, and skimmer integration. Owner reports show 3+ year longevity under routine vinyl-pool use. The trade-off is higher cost relative to brush-based units.
Next up

Cordless vs corded robot pool cleaners: which is better?

Read the comparison
Comparison ID: RV–CMP–1977 · Last reviewed Jun 1, 2026 · Based on owner reports, manufacturer documentation, and firmware release notes