Robotic Pool Cleaners matchup
Aiper Scuba S1 vs Dolphin Nautilus CC Plus
cordless convenience vs the corded workhorse
Tale of the tape — this fight hasn't been booked yet
No showdown has ruled between these two. What follows is the verified data, not a verdict.
Ringside notes
The most-asked cross-brand question in pool robots isn't really about these two machines — it's about the cord. No showdown has ruled between them (they shared only our pound-for-pound roundup, where the Beatbot AquaSense 2 took best overall), so this is a tale of the tape between two philosophies. The Scuba S1 is cordless convenience with the deepest proof in its division: 4.3★ across 837 owners at ~$500, happiest in light-debris pools up to ~1,600 sq ft, done in 150 minutes and back on its charger. The Nautilus CC Plus is the corded workhorse: a 3,260-owner base (at an honest, middling 3.6★), no battery to charge, age, or replace, and the stamina to run as long as a big pool needs — the reason it took "best for big pools" in that roundup. The trade is exact: the S1 asks you to charge it; the CC Plus asks you to manage a cable every session, forever. Small-to-mid pool, light debris: S1. Big pool, heavy debris, decade of ownership: the cord is the boring right answer.
Tale of the tape
| Model | Best for | Filtration | Owner rating | Warranty | Surfaces | Price |
|---|---|---|---|---|---|---|
| Best value | 180 µm (optional 3 µm MicroMesh) | 4.3★ / 837 (Vine-padded) | 2 yr (24 mo, US); accessories 6 mo, filters 3 mo | All surfaces incl. vinyl (silicone brush) | ~$499.99typical at Aiper directCheck price → | |
| Best for big pools | Ultra-fine filters (µm not published) | 3.6★ / 3,260 | 1 year | All surfaces incl. vinyl (active scrubbing) | ~$819.99typical at AmazonCheck price → |
Prices move constantly — any Amazon price shown is as of the date noted and subject to change; tap through for today's number.
Prices move constantly — tap through for today's number.
What would decide it
- Owner proof: Aiper Scuba S1 reads 4.3★ across 837 owners; Dolphin Nautilus CC Plus reads 3.6★ across 3,260. Depth of sample matters as much as the star.
- The money: Aiper Scuba S1 streets ~$500, Dolphin Nautilus CC Plus ~$820 — MSRPs, not sale lows, decide the tier.
- The hidden consumable: Aiper Scuba S1 battery — Not stated; Dolphin Nautilus CC Plus — not stated. A robot whose battery can't be replaced IS the consumable.
- Aiper Scuba S1 — your pick if: you want a long-runtime cordless robot at about $500 and you judge it on the machine rather than the star average — its deep 4.3★/837 base carries a heavy free-product Vine share (four of ten visible cards at the September 2026 read), so the number is softer than it looks; best for light-debris pools, not heavy silt or the biggest pools.
- Dolphin Nautilus CC Plus — your pick if: you have a big pool (up to 40 ft) and want a corded workhorse that runs as long as you need with no battery to replace — as long as you'll manage a cord and live with flaky Wi-Fi.
The full cards
Aiper Scuba S1
Best valueYour pick if you want a long-runtime cordless robot at about $500 and you judge it on the machine rather than the star average — its deep 4.3★/837 base carries a heavy free-product Vine share (four of ten visible cards at the September 2026 read), so the number is softer than it looks; best for light-debris pools, not heavy silt or the biggest pools.
“I picked up a S1 a few weeks ago and have been very impressed. It cleans just as good as my old Maytronics, for half the price and no cord.”— JJ_Tex, verified owner (Trouble Free Pool)
- Excellent price-to-performance
- Cleans the waterline too
- Long runtime for the price (~270 min floor-only; ~150 min combined)
- Easy to live with
- Testers ding fine-debris pickup on very silty pools
- Best for light-debris pools; weaker than corded models
- Navigation/app less refined than the premium tier
The durability reports are the thing to read, and almost all of them are European: batteries dead inside a year, units failing after one or two seasons, one first defect after five uses. The two US cards are different - one owner ran it three times on an 8,000-gallon pool and the pool was still dirty. Worth weighing against a headline rating that is itself heavily Vine-seeded.
7 of the 10 visible critical cards are Reviewed in Germany, 1 in Canada, only 2 in the United States; 4 of them are the machine dying inside one or two seasons. Tail was 57 of 776 at the August 2026 pass; the base read 837 on 2026-09-04 · critical reviews read August 2026
Also at: Amazon
Dolphin Nautilus CC Plus
Best for big poolsYour pick if you have a big pool (up to 40 ft) and want a corded workhorse that runs as long as you need with no battery to replace — as long as you'll manage a cord and live with flaky Wi-Fi.
Pro review “It'll still clean your pool better than any cordless cleaner under $1,000. But it's not the robot it used to be.”Hands-on test of the 2026 Nautilus CC Plus in The Pool Nerd's own test pool (published 2026-07-31; "I've tested over 40 robotic pool cleaners in the last five years in our test pool"). Verdict: 'Pool Nerd Disapproved' — the warranty was cut from 2.5 years to 1, the NanoFilters and waterline cleaning are gone, and the price did not drop to match. His finding independently corroborates the 1-year warranty this card records from maytronics.com.— Justin D., The Pool Nerd
- Runs as long as you need — no battery
- Cleans well when it runs — owners and the tail agree on that; the deepest owner base of any cleaner we track (3,260, pooled across the Nautilus family)
- Great for large pools
- Amazon has suppressed this listing's buy box ("High price"): offers start at $819.99 while Maytronics sells the same Wi-Fi SKU direct for $749 — check the maker's store before you buy here
- You manage a floating cord
- Doesn't always hit the waterline as aggressively as top cordless models
- Owners report flaky Wi-Fi/app connectivity — the main drag on its 3.6★ rating
It cleans well and owners say so in the same breath — the complaint is that it does not keep doing it. Power supplies and motors failing inside the first year or two recur, with slow warranty replacement (one owner waited eight weeks), and a second, smaller theme is getting stuck on steps and in corners. Several also note it handles fine silt better than large debris.
6 of the first 10 critical cards describe a failure or unreliability rather than cleaning performance; 864 critical reviews against a 3,223 base at the August 2026 pass (3,260 on the 2026-09-04 re-read) · critical reviews read August 2026
FAQ
Which is better, the Aiper Scuba S1 or the Dolphin Nautilus CC Plus?
No fight between them has been ruled — in our pound-for-pound roundup both lost best-overall to the Beatbot AquaSense 2, with the S1 taking best value and the CC Plus best for big pools. The real decision is cordless convenience (S1) versus corded stamina and no battery to age (CC Plus).
Why does the CC Plus rate only 3.6★ with so many owners?
A 3,260-owner base at 3.6★ is the profile of a long-selling workhorse: enormous proof volume, honest wear-and-tear complaints included. We'd weight it differently than a young 4.5★ on 50 reviews — it's the most battle-tested data point on this card, not the prettiest.
What does the cord actually cost me day to day?
Handling: you deploy and retrieve a tethered robot each session and occasionally untwist the cable. What it buys: unlimited runtime for big pools, no charging window, and no battery that fades into a replacement decision — the CC Plus will run the same in year six as year one.
Full fight coverage
- The Best Robotic Pool Cleaners of 2026: Cordless vs. Corded, Compared
- The Best Smart-Value Cordless Pool Robots of 2026: Beatbot Sora 10 vs WYBOT C2 vs Aiper Scuba S1 vs Dreame Z1 Pro
- The Best Corded Robotic Pool Cleaners of 2026
- The full brand rivalry, belt by belt →
- All matchups →
- The full fight card →
Every number on this page derives from the same verified data that renders our showdowns — dated owner-rating reads, MSRP-based tiers, and rulings only where a real fight happened. Data last verified: September 2026. Methodology and monetization disclosure: how we test.