Garden Last updated · owner ratings verified July 2026
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Side by side
| Our pick Dolphin Dolphin Nautilus CC Robotic Pool Cleaner Best overall $500-650 Check price | Dolphin Dolphin Nautilus CC Plus Wi-Fi App control $800-1,000 Check price | Dolphin Dolphin Nautilus CC Pro Wi-Fi Weakest record here $900-1,200 Check price | AIPER AIPER Scuba S1 Cordless Robotic Cleaner Best cordless $550-700 Check price | AIPER AIPER Seagull SE 2025 Cordless Pool Vacuum Best value $200-280 Check price | AIPER AIPER Cordless Robotic Pool Cleaner, Dual-Drive Most-owned AIPER $250-330 Check price | |
|---|---|---|---|---|---|---|
| What owners rate it | ||||||
| Owner rating | 4.1 / 5 (10,592) | 4.1 / 5 (47) | 3.3 / 5 (546) | 3.9 / 5 (2,451) | 3.9 / 5 (961) | 3.9 / 5 (2,683) |
| Specifications | ||||||
| Power | Corded, low-voltage deck power supply | Corded, low-voltage deck power supply | Corded, low-voltage deck power supply | Cordless, rechargeable battery | Cordless, rechargeable battery | Cordless, rechargeable battery |
| Cycle time | About 2 hours per cycle | About 2 hours per cycle | About 2 to 2.5 hours per cycle | About 90 to 150 minutes per charge | About 90 minutes per charge | About 50 to 90 minutes per charge |
| Surfaces cleaned | Floor, walls and waterline | Floor, walls and waterline | Floor, walls and dedicated waterline mode | Floor and walls | Floor only | Floor only |
| Rated pool size | In-ground pools to about 33 ft | In-ground pools to about 50 ft | In-ground pools to about 50 ft | In-ground pools to about 1,600 sq ft | Pools to about 850 sq ft | Flat-bottom pools to about 860 sq ft |
| Filtration | Top-load fine filter basket | Ultra-fine filter panels included | Multi-layer filter panels | Dual filter baskets | Single filter basket | Single filter basket |
| Getting it out | Lift by cable to the wall | Lift by cable to the wall | Lift by cable to the wall | Self-parks at the waterline | Pole retrieval | Self-parking |
| Warranty | Maytronics limited warranty, confirm term for your model | Maytronics limited warranty, confirm term for your model | Maytronics limited warranty, confirm term for your model | AIPER limited warranty, typically 1 year | AIPER limited warranty, typically 1 year | AIPER limited warranty, typically 1 year |
| Who it suits | ||||||
| Best for | An in-ground pool up to about 33 feet that needs floors and walls done properly | Owners who want to start a cycle from the house and choose cleaning modes | Larger in-ground pools where waterline scale is the main problem | An in-ground pool where a floating cable is not welcome | An above-ground or small in-ground pool where the floor is the whole job | A flat-bottom above-ground pool that collects sand and grit |
Ratings are aggregated Amazon owner ratings, not our own testing. Figures verified July 2026.
Pros and cons
Dolphin Nautilus CC Robotic Pool Cleaner
- Largest owner-review base on this page by a wide margin, and the best rating of any machine here with a meaningful number of reviews
- Active scrubbing brush and wall climbing mean the waterline gets cleaned, not just the floor
- Top-loading filter basket rinses out in under a minute, which owners repeatedly say is why they keep using it
- The floating cable tangles, and this is the single most repeated criticism in its owner reviews
- Heavy to lift out dripping wet at the end of a cycle
- No app, no scheduling beyond the timer on the power supply
Dolphin Nautilus CC Plus Wi-Fi
- App scheduling and mode selection, which the standard Nautilus CC does not offer
- Ultra-fine filters included, so it picks up pollen and fine silt the standard basket passes
- Same proven Maytronics drive and brush system as the best-rated model here
- Very small owner-review base compared with the standard model, so the record is thin
- Materially more expensive than the CC for a cleaning result owners describe as similar
- Still corded, with the same tangle complaints
Dolphin Nautilus CC Pro Wi-Fi
- Waterline scrubbing mode is the most thorough approach to the tide line of anything here
- App control with multiple cleaning cycles and a weekly scheduler
- Handles longer pools than the standard Nautilus CC
- Lowest owner rating on this page, with reliability inside the first two seasons the recurring theme
- Most expensive machine here
- Complexity adds failure points the simpler Nautilus CC does not have
AIPER Scuba S1 Cordless Robotic Cleaner
- Climbs walls, which most cordless cleaners of this price do not attempt
- No cord means no tangle and no untwisting ritual at the end of every cycle
- Self-parks at the waterline, so retrieving it does not mean reaching into the deep end
- Battery runtime caps the cycle, so very large or very dirty pools need two runs
- Owners report it can strand itself on steps and in tight corners
- Battery is the life-limiting part and it is not user-replaceable
AIPER Seagull SE 2025 Cordless Pool Vacuum
- Cheapest robotic cleaner on this page by a wide margin
- Drop it in and walk away; owners consistently describe setup as the easiest of anything they have owned
- Strong suction for the price, and it handles leaves and acorns owners expected it to choke on
- Floor only, so the waterline and walls still need a brush
- About 90 minutes of runtime, which is a single pass on a mid-size pool
- Owners report it needs fishing out with the pole when it stops mid-pool
AIPER Cordless Robotic Pool Cleaner, Dual-Drive
- Largest AIPER review base here, so the failure patterns are well documented
- Dual-drive motors track straighter on a flat floor than a single-motor cleaner
- Self-parking at the end of a cycle saves the pole hunt
- Floor only, with no wall or waterline capability at all
- Struggles on sloped floors and deep-end transitions
- Battery degradation shows up in owner reviews after two to three seasons
Decision factors
What you actually pay
Entry prices are not comparable, because the two brands are selling different amounts of machine. The AIPER Seagull SE is a floor cleaner for a small pool and costs accordingly. The Dolphin Nautilus CC is a floor, wall and waterline cleaner for a full-size in-ground pool. The closest genuine match on capability is the AIPER Scuba S1 against the Nautilus CC, and there the price gap narrows to very little.
Running costs are low but not zero. Both brands use replaceable filter baskets or panels, and both wear through brushes and tracks over a few seasons. Dolphin, as the older and far more widely serviced brand, has the better parts situation — impellers, brushes, tracks and power supplies are stocked, and there are independent repair shops that work on Maytronics units. AIPER parts are newer to the aftermarket and battery packs in particular are not user-serviceable on most models.
That battery is the real long-term cost difference. A corded Dolphin has no cell to degrade, so its lifespan is a mechanical question. A cordless AIPER is on a clock from the first charge, and the owner-review record shows capacity complaints appearing around the second or third season. Against that, a Dolphin cable that has been kinked and twisted for four summers is its own failure mode.
Compare either against the alternative you already have. A robotic cleaner replaces roughly an hour a week of manual vacuuming through the season, and it also reduces pump runtime because you are not vacuuming through the filter. Our page on whether robotic pool cleaners are worth it works through that trade honestly.
Which one fits you
- Full-size in-ground pool, walls need doing Dolphin Nautilus CC Best-rated machine here across the largest review base, and the only kind that scrubs the waterline properly.
- Above-ground pool, flat floor, tight budget AIPER Seagull SE 2025 A third the price of the Dolphin and it does the one job an above-ground pool actually needs.
- You hate the cord more than anything AIPER Scuba S1 The only cordless cleaner here that climbs walls, and it parks itself at the waterline so retrieval is easy.
- You want to start a cycle from indoors Dolphin Nautilus CC Plus Wi-Fi App scheduling plus ultra-fine filters, on the same proven Maytronics drivetrain as the standard model.
If neither is right
- Beatbot AquaSense 2 Cordless Robotic Cleaner A newer cordless entrant that adds surface skimming to floor and wall cleaning, which neither brand here does. Expensive and with a small review base, but it is the only machine of the group that addresses leaves before they sink.
- Intex Handheld Rechargeable Pool Vacuum Not a robot at all — a battery vacuum on a telescoping pole for spot cleaning. If the actual problem is a few leaves in one corner twice a week, this costs a fraction of anything above and takes five minutes.
- INTEX 28001E Automatic Pool Cleaner A pressure-side cleaner that runs off your existing pump rather than its own motor. Cheap, no battery to degrade and no electronics to fail, at the cost of needing enough pump flow and cleaning far less thoroughly.
Which should you actually buy?
Buy the Dolphin Nautilus CC if you have a full-size in-ground pool and want the floor, the walls and the waterline genuinely cleaned. Buy the AIPER Seagull SE if you have an above-ground or small pool where the floor is the whole job and the price difference matters. If you have an in-ground pool and simply cannot stand a floating cable, the AIPER Scuba S1 is the compromise that gives up the least.
Why does the cord decide everything?
A corded cleaner has unlimited power. That single fact explains why Dolphin machines run two-hour cycles, drive an active scrubbing brush, climb vertical walls and work a waterline — all of which cost energy a battery has to ration. It also explains the most common Dolphin complaint in the owner-review record, which is not cleaning quality but the cable: it twists, it tangles, and it needs untwisting before each run.
AIPER built its business on removing that annoyance, and it genuinely is an annoyance. A cordless cleaner is a thirty-second decision — lift the lid, drop it in, walk away. The costs are all downstream: a fixed runtime, floors only on most models, weaker climbing, and a battery that will eventually be the reason the machine is retired.
Which one actually cleans better?
Dolphin, and the gap is clearest at the waterline. The tide line of oils and dust just above the water is the part of a pool that looks bad first, and cleaning it requires a machine that can hold itself against a vertical wall and scrub. The Nautilus CC does that with an active brush; the wall-climbing AIPER Scuba S1 attempts it with less force, and the cheaper AIPER models do not attempt it at all.
On floors alone the difference narrows sharply. Owners of the AIPER floor models are broadly happy with the result on a flat bottom, and the machines pick up leaves, acorns and grit better than their price suggests. What they struggle with are slopes, deep-end transitions and corners, which is exactly where a tracked, corded machine with an unlimited power budget pulls ahead.
What do the owner ratings really say?
Read the ratings alongside the review counts, because they tell a story the star numbers alone do not. The standard Dolphin Nautilus CC has by far the largest review base of any machine on this page and the best rating among the machines with a meaningful number of reviews — that combination is the strongest evidence available in a category this failure-prone. The Dolphin Nautilus CC Pro, by contrast, carries the lowest rating here, which is a useful reminder that a more expensive model from a good brand is not automatically a better buy.
AIPER models cluster tightly just below, with the complaints concentrated on stranding and battery life rather than cleaning quality. That is a consistent, believable pattern rather than a sign of a bad product: cordless machines get stuck more because they have no cable to pull them free, and batteries degrade because batteries degrade.
Does your pool type change the answer?
Completely. An above-ground pool has a flat vinyl floor, no deep end, no steps to strand a robot and walls that a hand brush reaches in two minutes. A floor-only cordless cleaner is the right machine there, and paying Dolphin money for wall climbing you will never use is waste. An in-ground pool with a sloped deep end, a tanning ledge and a tiled waterline is the opposite case, and it is where the corded machine earns its price.
Debris type matters too. Fine silt and pollen need fine filtration, which is where the ultra-fine filter panels on the Nautilus CC Plus are genuinely useful. Leaves and acorns need basket volume and suction more than fineness. Our robotic pool cleaner rankings break the field down by both.
What will go wrong, and can it be fixed?
On a Dolphin: brushes wear, tracks stretch, impellers pick up hair, and cables get damaged. All of those are replaceable parts, and Maytronics has been making these machines long enough that parts and independent repair are genuinely available. That serviceability is an underrated part of what the price buys.
On an AIPER: it strands itself, and eventually the battery will not hold a charge. The first is a placement and obstacle problem you can partly design around — see why pool vacuums keep getting stuck. The second is terminal on most models, which is the strongest argument for treating a cheap cordless cleaner as a three-to-five-season purchase rather than a permanent one.
Does cycle length matter as much as it sounds?
Yes, and not for the reason most people assume. A two-hour corded cycle is not simply four passes where a ninety-minute cordless run manages three. Robotic cleaners work by covering the floor repeatedly on different vectors, and coverage improves non-linearly with time — the last thirty minutes catch the parts the first ninety missed, which is exactly why a machine that has to stop when its battery does leaves streaks in predictable places.
In a small pool that difference is invisible because the whole floor gets covered several times either way. In a long or irregular pool with a deep end and a tanning ledge, it is the entire argument for a corded machine. Match cycle time to pool size before you compare anything else, because a cordless cleaner asked to do a pool it cannot finish will look like a bad product when it is really a mismatched one.
The call
Dolphin Nautilus CC is the better machine and the safer purchase: the best-rated cleaner here across the biggest owner base, genuinely thorough on walls and waterline, and repairable when something wears out. AIPER Seagull SE 2025 is the value pick and the correct answer for an above-ground pool, where it does the one job that needs doing for a fraction of the money.
Everything on this page is ranked from aggregated Amazon owner ratings and published expert consensus rather than first-hand trials — see how we rank. For cordless options specifically, see the best cordless pool vacuums, and how often to vacuum a pool covers how much cleaning your pool actually needs.