Introduction
The Aiper Seagull SE and the Dolphin Quantum live at opposite ends of the robotic pool cleaner spectrum, and I bought both to find out just how wide that gap really is. The Seagull SE grabs your attention with its cordless design and low price. It didn't take long in the pool, though, before it was obvious it couldn't keep pace with a more capable robot.
The Dolphin Quantum is the robot the Seagull SE wishes it were. NanoFilters, the XXL MaxBin, a programmable weekly timer, it's built for real, thorough cleaning. In my testing it took every category, from pool coverage to filtration, while the Seagull SE kept coming up short.
I bought and ran both of these for months, not days, and that time made the differences impossible to miss. Below I'll break it all down so you can figure out which cleaner actually fits your pool.
"One of these is a real power performer. The other just looks the part."
When I test a pool robot, I judge it on three things: how much of the pool it covers, how well it filters, and what its features and warranty add up to. Those three tell you almost everything about whether a robot will actually make your life easier. If you want a cleaner that runs reliably without constant fuss, keep reading and I'll tell you which one wins.
How We Test
I run every pool robot for three months before I'll draw a conclusion, and the Aiper Seagull SE and the Dolphin Quantum both got that full stretch. I'm judging three things the whole time: pool coverage, filtration, and the feature set and warranty. Three months is long enough to see how a robot really behaves once the novelty wears off, which is exactly what you want to know before spending money.
"The gap between these two wasn't subtle. It was night and day."
Three months with the Seagull SE exposed a lot of weak spots. Cordless sounds great, but it spent more time on the charger than in the water. The static brushes and the total lack of navigation meant it missed spots and struggled to pick debris up. And the longer I used it, the more the battery faded, which only made things worse.
The Dolphin Quantum was a completely different experience. From the very first run it cleaned thoroughly, floor to waterline, and never left me second-guessing. Between the NanoFilters and the XXL MaxBin, the water came back clear after every cycle.
"The Seagull SE struggled. The Quantum just handled it."
Filtration over those three months only widened the gap. The Seagull SE's flat filter couldn't handle finer particles, so the water kept turning cloudy, and the filter design made cleaning it a genuine chore.
The Quantum's NanoFilters and roomy MaxBin were a different world. They trapped fine debris, sand, and small particles reliably, so the water stayed clear, and the big basket was easy to empty and rinse. That made the whole thing pleasant to live with instead of a hassle.
Features and warranty made it even more lopsided. The Seagull SE's short one-year warranty and constant charging were real setbacks. The Quantum's two-year warranty plus its programmable timer made it the more capable and more convenient robot by a clear margin.
Add it all up and the Aiper Seagull SE falls short in the areas that matter most. The design issues, weak cleaning, and questionable durability make it hard to recommend. The Dolphin Quantum is the clear winner here, delivering reliable, efficient, thorough cleaning. If you want a high-performance robot you can actually trust, the Quantum is the pick, and you can see how it stacks up against everything else on my best pool robots page.
Coverage
Coverage is where the Aiper Seagull SE and the Dolphin Quantum really separate. The Seagull SE is floor-only, so it cleans the flat bottom of your pool and nothing else. If your pool has slopes, walls, or any real shape to it, that's a big problem, because the robot just can't adapt to those areas.
The Quantum covers the whole thing, floor, walls, and waterline, for a complete clean. It leans on smart navigation and PowerJet 3D mobility to keep a strong grip and clean thoroughly even in more complicated pool shapes.
Watching them clean, the Seagull SE missed a lot. Its weak navigation and static brushes led to random movement and inconsistent results, and it regularly left visible debris behind. That means you're back out there finishing the job by hand.
The Quantum's cleaning was genuinely impressive by comparison. Dual scrubbing brushes dislodge and grab debris efficiently, and the smart navigation covers the pool systematically so it doesn't skip spots. Waterline cleaning is a real strength here, helped by PowerJet 3D mobility that stabilizes the robot and powers it into the hard-to-reach areas.
The Seagull SE earns a coverage score of 3 out of 10, which sums up its limits. It can't climb walls and it only does the floor, so it works better as a spot cleaner than a complete solution. That's the honest ceiling for this robot.
The Quantum lands a 10 out of 10 for coverage, and it earns it, with effective waterline cleaning, smart navigation, and dual brushes all pulling together to clean every part of the pool.
Put them side by side and the Dolphin Quantum wins coverage in a walk. The Seagull SE might be fine for a small, simple pool or as a backup to hand-cleaning, but it can't give you a hands-free, whole-pool clean. The Quantum can, and it does it better than anything else near its price.
"For whole-pool coverage without lifting a finger, the Quantum is the easy call."
Filters
The filtration on the Aiper Seagull SE and the Dolphin Quantum couldn't be more different in how they perform and how easy they are to live with. The Seagull SE uses a flat filter, which just doesn't catch finer particles. I saw it firsthand: smaller debris slipped straight through, and the water never quite cleared up.
The Quantum takes a smarter, dual-layer approach with both standard fine filters and NanoFilters. The standard filter handles the bigger stuff like leaves and twigs, while the NanoFilters catch the microscopic particles that fog up water. Together they cover a wide range of messes and mean less frequent maintenance.
"The Quantum's dual-layer filtration leaves the Seagull SE's single flat filter in the dust."
I lean hard toward the Quantum here. The NanoFilters make a real, visible difference in water clarity by trapping fine debris and algae. The Seagull SE's single flat filter needs cleaning more often and doesn't filter nearly as well, so you end up stepping in by hand more than you'd like.
On the range of debris each one handles, the Quantum's basket, and especially those NanoFilters, deal with everything from leaves and twigs down to fine sand and algae. The big XXL MaxBin adds capacity too, so it runs longer cycles before you have to empty it. The Seagull SE, on the other hand, struggles with the fine particles and is really only suited to casual, light debris pickup.
The scores make it plain. The Quantum earns a strong 10 out of 10 for filtration, matching how comprehensive and efficient it is. The Seagull SE lands a modest 2 out of 10, which reflects how much it struggles in this area. So the Quantum is the clear filtration winner, and by a wide margin.
All told, the Quantum's filtration blows past the Seagull SE's. The dual-layer setup plus the large-capacity MaxBin adds up to a reliable, thorough clean. The Seagull SE is fine for the occasional light job, but it can't compete with the Quantum when it comes to keeping the water genuinely clear.
If you want a robot that keeps your pool clean with minimal effort, the Dolphin Quantum is the better buy. And as always, it's worth browsing my full rundown of the best pool robots to find the right match for your pool.
Feature Set
The feature sets of the Aiper Seagull SE and the Dolphin Quantum deliver two very different ownership experiences. The Seagull SE's headline is its cordless design, which sounds like freedom on paper. In actual use, though, that freedom comes with a lot of strings attached.
The bigger issue is a weak motor that isn't up to a full pool clean, and a robot that spends more time charging than cleaning. That's a real inconvenience day to day. The static brushes don't help either, since they lack the power to scrub properly, so the Seagull SE stumbles on basic upkeep and leaves you filling in the gaps.
The Dolphin Quantum comes loaded for real pool care. Patented PowerJet 3D mobility gives it thorough coverage from floor to waterline, dual scrubbing brushes actively knock loose dirt and debris, and the smart navigation covers the whole pool in a systematic pattern instead of bouncing around at random.
Filtration is one of the biggest dividing lines between the two. The Seagull SE's basic flat filter needs frequent cleaning and can't grab microscopic particles, which drags down performance and piles more work on you.
"The Quantum's dual-layer filtration is exactly what the Seagull SE is missing."
The Quantum's dual-layer filtration, with both standard fine filters and NanoFilters, catches the big debris like leaves and the fine stuff like sand alike. And the larger XXL MaxBin means fewer trips to empty it, which just makes the whole thing easier to own.
On usability, the Seagull SE falls behind with its daily recharging and limited cleaning ability. Its short one-year warranty doesn't do much for confidence in how long it'll last, which makes it feel like a robot that could get expensive down the road.
The Quantum, by contrast, has a programmable weekly timer for automated cleaning schedules, so the pool stays maintained without you constantly stepping in. Its two-year warranty from Maytronics also gives you a lot more confidence in its durability and performance.
"The Quantum pairs real efficiency with real convenience, and the Seagull SE just can't match it."
On features, the Seagull SE earns a 3 out of 10, which matches its thin capabilities and constant maintenance. There just isn't enough here for anyone who wants a hands-off cleaner.
The Quantum scores an impressive 9 out of 10 for a well-rounded set that includes smart navigation, efficient filtration, and automated cleaning. Together those make it a powerful, reliable choice for full pool maintenance.
On features, the Quantum is clearly the better robot. It's more powerful, more efficient, and easier to use. If you want reliability and convenience, the Dolphin Quantum is the pick over the Aiper Seagull SE.
For more options and a wider look at what's out there, take a spin through my reviews of the best pool robots to find the right fit for your pool.
Conclusion
Stack the Aiper Seagull SE against the Dolphin Quantum and the gap in performance and satisfaction is impossible to miss. The Seagull SE lands a disappointing 2.6 out of 10, mostly because of its limited cleaning, weak filtration, and basic design flaws. A few small improvements over older models don't change the fact that it just isn't a satisfying pool cleaner.
The Quantum sits at a strong 9.7 out of 10. Its dual scrubbing brushes, NanoFilters, and roomy XXL MaxBin make it a standout across every part of pool cleaning. It covers the whole pool, floor to waterline, and keeps things pristine with almost no input from you.
"The Quantum is a head above the Seagull SE, and it isn't close."
Given all that, the Dolphin Quantum outperforms the Aiper Seagull SE in every way that counts. The Seagull SE might catch your eye with its cordless design and price, but those perks get buried quickly under its shortcomings. The Quantum delivers robust, reliable cleaning with a stack of features that justify the higher price.
If you want a more dependable, more effective robot, it's worth looking at alternatives like the Dolphin Escape, Dolphin Cayman, or Dolphin Sigma. Each brings its own strengths and could fit your specific needs better than the Seagull SE.
Bottom line, if you care about efficiency, reliability, and cleaning the whole pool, the Dolphin Quantum is the better robot. For more options and comparisons, check out my reviews of the best pool robots to find the right match for your pool.
Alternate Robots
If you're shopping around, a few other robots are worth a serious look next to these two. Two I'd start with are the Dolphin Premier and the Dolphin Escape, both of which bring strong features and dependable cleaning that make them useful reference points against the Seagull SE and Quantum.
The Dolphin Premier stands out with its Multi-Media filtration, which includes NanoFilters, an oversized leaf bag, and standard fine filters. Its dual scrubbing brushes handle walls and waterline beautifully, and the programmable timer plus Media-Alert make maintenance close to automatic. If you want hands-free cleaning across the entire pool, walls and waterline included, the Premier is a great fit.
"The Premier's filtration and cleaning put it in a class of its own."
Next is the Dolphin Escape, built mainly for above-ground pools but also fine for smaller in-ground ones. It uses Hypergrip tracks and SmartNav 2.0 navigation to clean in consistent, efficient patterns without getting stuck or missing areas. The MaxBin filter basket holds plenty of debris, and optional NanoFilters bump up water clarity when you need it.
The Aquabot REVA deserves a mention too. With a gyroscope and a powerful planetary gear system, it cleans thoroughly from floor to waterline. Its dual-layer filtration pairs standard fine filters with an extra layer to handle both large and fine debris, and the smartphone app makes scheduling and remote control easy.
Each of these has real strengths, but if I'm picking one standout, the Dolphin Premier is my recommendation. Its advanced filtration, strong cleaning, and easy operation make it a genuinely worthwhile investment. For more detailed reviews and comparisons across the top robots, take a look at my best pool robots page to find the right fit for your pool.