Aiper Scuba S1 vs. Dolphin Nautilus CC Plus
Aiper Scuba S1 or Dolphin Nautilus CC Plus? Buy the Dolphin Nautilus CC Plus for an inground pool with walls. Both clear the pool on their makers' figures, but more testers back the Dolphin. Pick the Aiper Scuba S1 if you want no cord. The Wybot C1 and S2 are in the table too.
On an inground pool 35 feet long with the walls included, the Dolphin Nautilus CC Plus and the Aiper Scuba S1 both clear the limits their makers publish, and the Dolphin is the pick on the weight of the tester record: three review outfits named it their best overall robotic pool cleaner, against two that tested it and came away critical, including a Pool Nerd Disapproved. The Pool Nerd gave the Aiper Scuba S1 that same Disapproved rating with no best-overall award on the other side of it, PoolBots does not recommend the Aiper for serious pool owners, and the one thing The Pool Nerd hands it is the budget pick among Aiper's wall-climbing cleaners. The Wybot C1 and S2 could not be judged at all, because Wybot rates them by pool area rather than pool length, and length is the check this pool turns on.
Between the two that can be judged, the split is a corded unit whose figures the testers back against a cordless one whose headline runtime they do not. The Dolphin runs 120 min plugged in and is rated to 40 ft; the Aiper is rated to 50 ft, claims the tile line the Dolphin's spec sheet does not, and lists for less. Read the 180 min in the table below as Aiper's claim and nothing more: no tester we track came near it. PoolBots put a stopwatch on the battery and landed under even the lower maker figure it started from, and the owner reports The Pool Nerd relays fall far below Aiper's claim as well. Both readings, and who reported them, are in the Aiper's tester table further down.
| Model | Pool type | Pool length, up to | Climbs walls | Scrubs the waterline | Cordless | Runtime | Weight | Warranty | Fit | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Our pick |  Dolphin Nautilus CC Plus | in-ground | 40 ft | yes | no | no | 120 min | 20.8 lb | 1 year | Clears the published limits | $829 at Amazon |
| Also worth it |  Aiper Scuba S1 | in-ground | 50 ft | yes | yes | yes | 180 min | not published | 2 years | Clears the published limits | $500 at Amazon |
Who this is for
Read on if you have narrowed it to these brands and want the makers' own figures side by side. The pool here is inground, 35 feet long, with the walls in scope, and every unit is judged against that. If you have not narrowed it that far, The best robotic pool cleaner for an inground pool judges all 13 units rather than five. If your pool is above ground, the two here their makers rate for it are the plain Dolphin Nautilus CC and the Wybot C1. Aiper's hero copy claims the Scuba S1 for both kinds of pool, but the spec table on the same page says in-ground, and this page judges the spec table; The best robotic pool cleaner for an above-ground pool runs these limits against an above-ground pool for the whole roster.
Against the same house
Every verdict 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 falls out on length alone: Maytronics rates it for a shorter pool than this one. 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 box below and these five are re-judged against your numbers; you can also ask it for a cordless design, which it reports as a want rather than a limit.
Adjust to your house. Change the numbers and this box re-judges the models compared here against your house, with the same rules and the same maker figures. The picks and tables above stay on the page’s own house.
Our pickDolphin Nautilus CC Plus
Our pick for this pool: fits, corded, and backed by the tester record
$829 at Amazon, November 2, 2026in-ground pool type40 ft pool length, up toclimbs wallsscrubs the waterline: no
The Dolphin Nautilus CC Plus is built for in-ground pools, rated for pools to 40 ft, and climbs the walls on a 120 min corded cycle, with a filter Maytronics rates at ultra-fine. It clears this pool with room left on length. What separates it from the Aiper is not the spec sheet but what happened when people ran it: Bob Vila's testers, Pool Research and Popular Mechanics each made it their best overall pick, and Bob Vila's team reports it finished a full cleaning cycle in about the time Maytronics claims for it.
Price as of November 2, 2026; the listing we verified as the bare unit. Sold by The Pool Spot when we checked; we could not confirm whether that seller is an authorized dealer for the maker's warranty, so check before you buy.
What you give up
The cord, the waterline it does not scrub, and a length rating a pool much longer than this one would exceed, where the Aiper Scuba S1 is rated further and claims that tile line itself. PoolBots says it does not perform like the premium cleaner Dolphin markets it as, and The Pool Nerd rated this version Disapproved after finding the fine filters gone from the unit it received; the side-by-side prints the filter grade from Maytronics' spec page instead, so check which filter the box ships with.
Owner reports, tester figures, more photos and the listings we skipped are on the Dolphin Nautilus CC Plus page. Figures from maytronics.com. Recall screen: no US or Canada recall names this model, checked November 2, 2026.
Also worth itAiper Scuba S1
The Aiper: more margin on length, cordless, and a tester verdict to read
$500 at Amazon, November 2, 2026in-ground pool type50 ft pool length, up toclimbs wallsscrubs the waterline
The Aiper Scuba S1 is rated for pools to 50 ft, climbs walls, counts the tile line among the zones it covers, runs cordless and lists for less than the Dolphin. It clears this pool with the wider margin on length of the two. The reason it is second and not first is the tester record: The Pool Nerd rated it Disapproved, and PoolBots does not recommend it for serious pool owners after finding the battery, the navigation and the build all short of what Aiper claims.
What testers said. The Pool Nerd: Disapproved; PoolBots: does not recommend it for serious pool owners. The Pool Nerd reviewed an earlier Scuba S1: it quotes Aiper's then-advertised 150 minutes. PoolBots does not name an edition; its unit ran 40 to 45 minutes and moved in a random pattern. We link the current edition, which Aiper rates for up to 180 minutes; no tester we can cite has reviewed it yet.
Price as of November 2, 2026; the listing we verified as the bare unit. Sold by AiperDirect, the maker's own storefront, when we checked.
What you give up
It comes out of the water to charge, and the runtime you plan the afternoon around is the one in the tester rows above, not the one on the box. The navigation labels in the table are the makers' own words rather than a measured difference: no tester we track ran the two side by side on coverage, and PoolBots' random-pattern report is an observation of this unit alone. If you want the makers' figures and the testers to agree, that is the Dolphin.
Owner reports, tester figures, more photos and the listings we skipped are on the Aiper Scuba S1 page. Figures from aiper.com. Recall screen: no US or Canada recall names this model, checked November 2, 2026.
The 5 Aiper Scuba S1 and Dolphin Nautilus CC Plus models compared here, against that house
| Model | Verdict | What decided it |
|---|---|---|
| Dolphin Nautilus CC Plus | Clears the published limits | made for inground pools maytronics.com; pool length limit is 40 ft; you need 35 ft maytronics.com; has wall climbing maytronics.com |
| Dolphin Nautilus CC | Misses a published limit | pool length limit is 33 ft; you need 35 ft maytronics.com |
| Aiper Scuba S1 | Clears the published limits | made for inground pools aiper.com; pool length limit is 50 ft; you need 35 ft aiper.com; has wall climbing aiper.com |
| Wybot C1 | Maker does not publish the limit | the maker does not publish a pool length limit |
| Wybot S2 | Maker does not publish the limit | the maker does not say which pool types it is for; the maker does not publish a pool length limit |
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. 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 published” means the maker does not state it. Prices are Amazon’s when we checked; “list” is the maker’s price. How to read these tables.
| Model | Pool type | Pool length, up to | Rated pool area | Climbs walls | Scrubs the waterline | Cordless | Runtime | Filter | Warranty | Price |
|---|---|---|---|---|---|---|---|---|---|---|
| Dolphin Nautilus CC Plus | in-ground | 40 ft | not published | yes | no | no | 120 min | ultra-fine | 1 year | $829 |
 Dolphin Nautilus CC | in-ground or above ground | 33 ft | not published | yes | no | no | 120 min | Fine Filter Kit | 1 year | $699 |
| Aiper Scuba S1 | in-ground | 50 ft | 1,600 sq ft | yes | yes | yes | 180 min | ultra fine (180 micron basket + 3 micron MicroMesh) | 2 years | $500 |
 Wybot C1 | in-ground or above ground | not published | 1,615 sq ft | yes | yes | yes | 150 min | fine (180 micron) | 2 years | $400 list $570 |
| Wybot S2 | not published | not published | 3,230 sq ft | yes | yes | yes | 210 min | not published | not published | $1,000 list |
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 or accessory word, or whose model number matches the maker's. Neither listing clears that second test. The Dolphin's bullet prints its listing's SKU against Maytronics' own; the Aiper's carries a different model string again, which we do not have, so check the model on the box. Rejected listings print their own number where it differs.
Each model page lists the similar Amazon listings we did not link and why: Dolphin Nautilus CC Plus, Aiper Scuba S1. How we match listings.
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; both tables here print the spec table's reading, 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.
See also: Cordless robotic pool cleaners, checked for recalls.
Questions people ask
Should I just buy the cheaper Wybot C1?
That is the real trade here. The C1 is the cheapest of the five, and Wybot claims wall climbing and tile-line cleaning for it, but no tester we track has published a hands-on test of either Wybot, so there is nothing measured to set against the claims. Wybot also rates it by pool area rather than length: the side-by-side prints that area, a shade above the 1,600 sq ft Aiper equates with its own 50 ft rating. Wybot will not put a length on it, so neither will we.
Which of them scrubs the waterline?
The Aiper Scuba S1 and both Wybots. Aiper counts it among the zones it says the cleaner covers, and Wybot's own pages for the C1 and the S2 name the tile line in what they clean. The Dolphin Nautilus CC Plus is the one that does not: Maytronics' spec sheet answers no, and The Pool Nerd reports it reaches the line without scrubbing across it. If the tile line is the thing that bothers you, the Dolphin is the unit that leaves it to you.
Why pick a corded cleaner over a cordless one?
Because there is no battery to plan around. The Dolphin Nautilus CC Plus runs 120 min from the power supply and can go again straight after. The Aiper Scuba S1 has to come out of the water after every use, and Aiper puts a full charge at 240 min, which PoolBots' testers report needing in full. What the cord costs you is placement: it only works where the power supply can stay plugged in for a whole cycle, so measure from the outlet before you buy.
Which is right for a bigger pool?
Put your length in the adjust box under Against the same house and these five are re-judged against your numbers. Of the two that can be judged here, the Aiper Scuba S1 carries the longer rating, 50 ft against the Dolphin Nautilus CC Plus's 40 ft, so a pool past the Dolphin's rating excludes it and leaves the Aiper standing. The whole roster, including units rated longer than either of these, is judged at The best robotic pool cleaner for an inground pool.
Related pages
Dolphin Nautilus CC PlusOur pick
$829 at Amazon