Summer on the Gold Coast means we're in the pool every single day — and that means sunscreen and oil building up on the waterline, plus leaves and twigs blowing in off the plants every time the wind picks up. Like today. The pool was pretty clean this morning, and there's still stuff settling on the floor. That's life here: you clean it, the wind comes through, and it's back in again. So the question for the brand new Aiper Scuba S3 is simple — is this the perfect robotic pool cleaner for hot summers, and is it the best-value one Aiper has made?

This is the sixth Aiper product I've tested and the fourth pool cleaner, all in this exact pool — the Scuba S1 Pro, the Scuba X1 and the Scuba V3 on the floor, plus the Surfer S1 and S2 on the surface. Today it's the S3: unboxing, weight and charging, a full floor, wall and waterline clean on a windy day with leaves, twigs, rocks and sand through it, the filter basket afterwards, the app, and exactly where it sits against the V3, X1 and S1 Pro. One honest note up front: this is a single real-world test session, not a months-long durability test.

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01What Is the Aiper Scuba S3?

The Scuba S3 is a cordless robotic pool cleaner that does the floor, the walls and the waterline on one charge. It runs dual active brushes front and rear with 4,800 gallons per hour of suction (about 18,000 litres an hour) plus a Turbo mode, uses dToF smart sensing to know where the walls are, and has JetAssist side jets to drive it along the waterline. Aiper rates it for pools up to 1,650 sq ft — about 150 square metres — which covers most backyard pools easily.

What it doesn't have is the V3's AI camera, AI Patrol mode or charging dock. That's the trade, and it's why the S3 is the interesting one: it's the lighter, simpler, more affordable route into Aiper's floor-wall-waterline cleaners.

02Unboxing, Weight & Charging

In the box: the Scuba S3, the power adapter, a retrieval hook that attaches to a standard pool pole, and the manuals. The first thing you notice when you pick it up is the weight. It's 8.15 kg — basically the same as the V3 at 8.2 kg, but compared with the S1 Pro and the X1, which are both nearly 12 kg, it's nearly 4 kg lighter.

Aiper says one hand, and honestly, it really is one hand. Carrying it to the pool, lifting it back out — no problem at all. It's also got a quick water release design, so when you lift it out it drains straight away and you're not holding all that extra water weight. That matters more than it sounds.

There's no charging dock on this one. There's a sealed port on the back — unplug the seal, plug the adapter in, and it charges. A full charge takes around 4 to 5 hours.

03Battery: 240 Minutes in Eco — and What It Actually Used

The S3 has a 10,400mAh battery. Aiper quotes up to 180 minutes of cleaning in standard mode and up to 240 minutes in Eco — four hours, which is actually longer than the V3's 210 minutes in Eco.

And here's the thing: I didn't even start this test on a full charge. I started at 75%, ran the floor, then the walls, then the waterline, and finished at about 50%. A whole-pool clean for roughly a quarter of the battery — and that's with the cycle set to turbo. In a pool my size, battery just isn't going to be your problem.

04Floor Test: Straight Lines, Debris Gone

You can start it from the app or with the button on the cleaner itself — press it and it cycles through the modes. I used the app, hit start, picked it up with one hand and in it went. It sinks to the bottom nice and gently, hits the floor, the brushes start, the suction kicks in, and off it goes.

On the floor the S3 runs up and down in straight lines. It's not wandering around, and it's not going over the same spot again and again — it's covering the pool properly. The bits that blew in with the wind this morning? As it goes over them, gone. The front brush loosens the debris, the suction pulls it in, and the rear brush comes in behind. One pass and that section is done.

05dToF Smart Sensing & Four-Zone Coverage

The V3 uses an AI camera to spot leaves and go straight after them. The S3 works differently. Its dToF smart sensor measures distance, so it knows exactly where the walls are — it comes up to the wall and turns. No banging into the side, no getting stuck. Aiper says it handles irregular-shaped pools too, and calls the route-planning four-zone coverage: it plans its path to cover the whole pool rather than missing spots.

So it isn't hunting debris like the V3. It covers the whole pool in an organised pattern and picks everything up as it goes. In this pool, that worked perfectly.

06Wall Climbing: No Wobble at All

Over to wall mode. Straight across the floor and up the sides. The tracks keep their grip while the brushes keep scrubbing as it climbs — and because that scrubbing brush is so powerful, it's actually adding grip on the wall. No wobble at all. It gets right to the top, comes back down, moves along, and goes back up again. It handled every wall and the steps in this pool without any trouble.

07Waterline & JetAssist: Where Summer Grime Lives

This is the part I always love with pool cleaners. Once the S3 reaches the top, JetAssist kicks in — the jet on the side pushes it along the waterline while the brushes scrub. It just sits on the edge and travels straight along it.

Here on the Gold Coast in summer, this is the bit that matters. We swim all the time, so you've got sunscreen, oil and pollen all sitting on top of the water and collecting against the wall. The S3 got it all off, easily — and that's been the hardest thing to get a pool cleaner to do properly. The jets on this one are genuinely impressive.

08Parking, Retrieval & the Filter Basket

When it's done, the S3 comes up to the waterline and parks itself, waiting for you, and you get a notification on your phone. It stays there for about 10 minutes before it sinks back down — if you miss it, the retrieval hook goes on your pool pole and you pull it out.

Inside is a 3.5-litre basket with a two-layer filter: the first layer catches the bigger stuff, and the second catches what gets through. Out of my pool came sand, twigs and a lot of fine debris — and it didn't come close to filling the basket. Before and after, the floor's clear, the walls are clean and the waterline's done. It took no setup tuning at all — turned it on, popped it in, and it started working.

09App Setup & Cleaning Modes

Setup in the Aiper app is straightforward. Start network configuration, hold the power button for 10 seconds to switch it on, then connect to the S3's Wi-Fi network and come back to the app to finish the network connection. It connected first time. From there you've got four cleaning modes: Auto (floor, walls and waterline), Floor, Wall and Waterline. There's device information and a device health screen so you can see how it's going, and a cleaning path setting — I used Adaptive Path, which adjusts to what it finds as it goes.

Like every Aiper I've tested, I'd still love underwater control. Once it's in the pool, the app doesn't talk to it, so you choose your mode before it goes in. To be fair, none of the pool cleaners I've used actually have that, so it's not a game changer — the S3 covered the whole pool on its own and never needed steering.

10Scuba S3 vs V3 vs X1 vs S1 Pro

Against the V3, the S3 shares the same 4,800 GPH suction, the same dual front-and-rear brushes and almost exactly the same weight. The V3 has the AI camera, AI Patrol and a charging dock — and watching it see leaves and go straight after them was impressive. The S3 doesn't do that; it covers the whole pool in a pattern instead. But the S3 gets more runtime in Eco: 240 minutes against 210.

Against the S1 Pro and X1, the S3 is nearly 4 kg lighter, and you really feel that lifting it out of the pool. The X1 still has more quoted suction at 6,600 gallons per hour, and in my testing it could also skim debris off the surface, which I thought was a fantastic feature. The S3 doesn't do that — but in this pool it picked up everything.

⚙Aiper Scuba S3: Full Specs

$Where to Buy + Giveaway

Comparing models? Here are the other Aiper cleaners I've tested in this same pool: Aiper Scuba V3 · Aiper Scuba S1 Pro · Aiper Scuba X1.

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▶Watch My Aiper Scuba V3 Review

Weighing up the S3 against the V3? Here's my full Aiper Scuba V3 review, tested in this same pool — AI camera, AI Patrol and all:

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