Dolphin Nautilus CC Plus vs. Aiper Scuba S1 vs. Wybot

Who this is for

Read on if you have narrowed it to these brands and want the makers' own figures side by side before you spend the money. The pool here is inground, 35 feet long, with the walls in scope, and every unit is judged against that, not in the abstract. If you have not narrowed it that far, the wider page at The best robotic pool cleaner for an inground pool judges all 13 units rather than five. If your pool is above ground, the Aiper Scuba S1, the plain Dolphin Nautilus CC and the Wybot C1 are the three their makers rate for it, but the verdicts here are inground verdicts; The best robotic pool cleaner for an above-ground pool runs the same limits against an above-ground pool, for the whole roster.

Against the same house

Every check on this page comes down to three things the makers state: what kind of pool the cleaner is built for, the longest pool it is rated for, and whether it climbs walls. This pool is inground and 35 feet long with the walls in scope, so the length rating is the figure that does the work. Maytronics rates the Dolphin Nautilus CC Plus to 40 ft and lists it as in-ground only. Aiper rates the Scuba S1 to 50 ft. Both clear this pool, the Aiper with more left over.

The plain Dolphin Nautilus CC is the one that falls out: Maytronics rates it for a shorter pool than this one, so it is excluded here on length alone. The two Wybots come back unknown, which is not a mark against them. Wybot states wall climbing for both and rates them by pool area instead of length, and the side-by-side prints that area in its own row, but a length is what the check on this page needs, so the chart marks them not published rather than guessing one. Put your own length in the adjust box below and these five are re-judged against your numbers; the whole roster is judged at The best robotic pool cleaner for an inground pool.

Every model against that house

Of the five compared here, only the two picks clear every limit, so there is no third unit that fits and lost on judgement. The plain Dolphin Nautilus CC is the closest thing to a rival, and it loses on one number: Maytronics rates it for a shorter pool than this one. That is a verdict about this pool, not about the machine. The Wybot C1 and the S2 are not beaten but unjudged, because Wybot rates them by area where this page needs a length. These five are the models this comparison is usually made between; the rest of the three makers' lines is judged against this same pool at The best robotic pool cleaner for an inground pool, which runs all 13.

Side by side, from the makers’ own documents

“Not captured” means the maker’s page we captured does not state it: a gap in our record, not a zero, and never filled from a sibling model. “No verified listing” means no Amazon listing for the bare unit passed our identity check yet.

Setting it up

Maytronics' manual sets the order for the Dolphin, and the order matters. Water first: the manual puts a pH band and a salt ceiling on it before the first run, and both limits, with the manual behind them, are in the Dolphin's fact list above. Then the robot goes in the pool, and only then does the power supply get plugged in, into an outlet protected by a GFI or earth leakage interrupter. Site it where it can stay plugged in for a whole cycle; Pool Research's testers report the swivel cord moved around an average-sized pool without tangling. The Aiper needs no outlet, only a charge before its first run, and Aiper puts a full charge at 240 min.

Buying it right

The Nautilus name covers several generations: CC, CC Plus and CC Supreme are different machines under near-identical names, so a listing saying only Nautilus CC is not this pick. We link the listing whose title carries the brand and full model name with no bundle, accessory or variant word, or whose model number matches the maker's part number. Neither listing clears that second test: the Dolphin's SKU differs from the one on Maytronics' own page, and the Aiper's listing carries a different model string again. We print the number each listing shows, so you can see the difference.

Dolphin Nautilus CC Plus

• The listing we verified: “Dolphin Nautilus CC Plus Wi-Fi Automatic Robotic Pool Vacuum Cleaner, Always Cleaning, Never Charging, with Wall Climbing Scrubber Brush, Ideal for In-Ground Pools up to 40 FT in Length”, $749 when checked. Brand and full model name in the listing's own title; the listing's SKU 99996406-PCI differs from the maker's 99996409-PCI (an edition of the same model, by the maker's own numbering).
• “Dolphin Nautilus CC Automatic Robotic Pool Vacuum Cleaner, Wall Climbing Scrubber Brush, Top Load Filter Access, Ideal for Above/In-Ground Pools up to 33 FT in Length”, $699: a different model that a search for this one returns.
• “Dolphin Nautilus CC Plus Wi-Fi Automatic Robotic Pool Vacuum Cleaner, Includes Caddy and Classic Cover for Storage and Protection, Ideal for In-Ground Pools up to 50 FT”, $968: An accessory or part listing ('cover for'), not the unit.
• “Dolphin Nautilus CC Plus Wi-Fi Robotic Pool Vacuum Cleaner Includes Ultra-Fine Filters for an Ultimate Clean, Ideal for In-Ground Pools up to 50 FT in Length”, $899: An accessory or part listing ('filters for'), not the unit.

Aiper Scuba S1

• The listing we verified: “Aiper Scuba S1（2024） - Robotic Pool Cleaner, Powerful Suction, 150-Min Runtime, Wall & Waterline Cleaning, for Inground & Above Ground Pools up to 1600 sq.ft”, $450 when checked. Brand and full model name in the listing's own title; no bundle, variant or accessory marker.
• “(2026 Upgrade) (Renewed) Aiper Scuba S1 Robotic Pool Cleaner,270 Min Runtime, Floor/Wall/Waterline/Shallow Area Cleaning, Ultra-fine Filter, Smarter Navigation, App Support-Black”, $400: Refurbished or used listing.
• “Aiper Scuba S3 Robotic Pool Cleaner for All Inground Pools, Obsidian”, $650: a different model that a search for this one returns.

What this page can’t promise

No tester we track has published a hands-on test of the Wybot C1 or S2, so their tester column is empty, not negative, and the makers' pages are the only evidence we have.

Nothing here was tested by us: every measured figure belongs to the named tester, the rows relaying what owners told a tester say so, and the complaints are owners' reports. Where a maker's page contradicts itself we say so rather than pick the better reading. Aiper calls the Scuba S1 a cleaner for above-ground and in-ground pools, then lists in-ground only in the spec table beside it; the side-by-side prints the pool type the maker states, and the verdict names the limit that decided it.

A cordless runtime figure is the maker's number in the maker's pool; a dirty pool or a cold one gets less, and a corded unit's timer only helps if the power supply is somewhere it can stay plugged in.

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