The Best Robotic Pool Cleaners for Inground Pools

An inground pool is the easy case for a robotic pool cleaner and the one where the wrong choice is most visible. The pool is a fixed shape with a hard shell, so a robot that fits its length, climbs its walls and reaches its waterline will quietly keep it clean. A robot that is too small for the pool, or that stops short of the tile line, leaves a ring of scum you notice every time you swim.

So this guide starts from the pool, not the spec sheet. Below are seven robots for inground pools, what each one is for, the trade-off that comes with it, and the handful of questions about length, cable, surface and steps that settle the choice. Our broader guide to the best robotic pool cleaners covers every pool type; this page is only for inground.

Best Robotic Pool Cleaners for Inground Pools Compared

The table puts the seven side by side on the points that separate them. Every figure is the maker's own, from its listing. Where a listing does not say, the cell reads "Not stated", which is a reason to check the maker's page before you buy, not a sign the feature is missing.

Robot	Polaris 9550 Sport Best for long poolsTop pick	Dolphin Nautilus CC Plus	Dolphin Proteus DX3	AIPER cordless inground	WYBOT C2 Vision	Polaris Freedom Plus	Beatbot Sora 70
Robot
Best for	Long pools on a cable	Most standard pools	Mid-size pools	Cordless, waterline	Smart coverage routes	Cordless, long pools	Surface debris, shallows
Pool length	Up to 60 ft	Up to 40 ft	Up to 33 ft	Not stated	Up to 2,150 sq ft	Up to 50 ft	Up to 3,200 sq ft per charge
Power	Corded, 70 ft swivel cable	Corded, cable length not stated	Corded, cable length not stated	Cordless, 180 min	Cordless, runtime not stated	Cordless, charges in 5 hours or less	Cordless, up to 5 hours on the floor
Walls	✅ 4WD	✅ Wall climbing	✅ Wall climbing	✅ Wall cleaning	✅ Wall mode	Not stated	✅ Wall cleaning
Waterline	Not stated	Not stated	Not stated	✅ Up to 2 in above the line	✅ Waterline mode	Not stated	✅ Waterline and surface
Filter	5 L canister	Top-load basket	Top-load basket	3 μm MicroMesh	180 μm basket plus HEPA	Not stated	Not stated
Controls	Handheld remote	Plug-and-play	Plug-and-play	App, OTA updates	App, 8 modes	Remote, iAquaLink app	App, tap to retrieve
Warranty	Not stated	Not stated	Not stated	2 years	Not stated	2 years, limited	3 years
Buy	Check price on Amazon	Check price on Amazon	Check price on Amazon	Check price on Amazon	Check price on Amazon	Check price on Amazon	Check price on Amazon

Best for long pools

Polaris 9550 Sport

Best for

Long pools on a cable

Show specifications

Pool length

Up to 60 ft

Power

Corded, 70 ft swivel cable

Walls

✅ 4WD

Waterline

Not stated

Filter

5 L canister

Controls

Handheld remote

Warranty

Not stated

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Dolphin Nautilus CC Plus

Best for

Most standard pools

Show specifications

Pool length

Up to 40 ft

Power

Corded, cable length not stated

Walls

✅ Wall climbing

Waterline

Not stated

Filter

Top-load basket

Controls

Plug-and-play

Warranty

Not stated

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Dolphin Proteus DX3

Best for

Mid-size pools

Show specifications

Pool length

Up to 33 ft

Power

Corded, cable length not stated

Walls

✅ Wall climbing

Waterline

Not stated

Filter

Top-load basket

Controls

Plug-and-play

Warranty

Not stated

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AIPER cordless inground

Best for

Cordless, waterline

Show specifications

Pool length

Not stated

Power

Cordless, 180 min

Walls

✅ Wall cleaning

Waterline

✅ Up to 2 in above the line

Filter

3 μm MicroMesh

Controls

App, OTA updates

Warranty

2 years

Check price on Amazon

WYBOT C2 Vision

Best for

Smart coverage routes

Show specifications

Pool length

Up to 2,150 sq ft

Power

Cordless, runtime not stated

Walls

✅ Wall mode

Waterline

✅ Waterline mode

Filter

180 μm basket plus HEPA

Controls

App, 8 modes

Warranty

Not stated

Check price on Amazon

Polaris Freedom Plus

Best for

Cordless, long pools

Show specifications

Pool length

Up to 50 ft

Power

Cordless, charges in 5 hours or less

Walls

Not stated

Waterline

Not stated

Filter

Not stated

Controls

Remote, iAquaLink app

Warranty

2 years, limited

Check price on Amazon

Beatbot Sora 70

Best for

Surface debris, shallows

Show specifications

Pool length

Up to 3,200 sq ft per charge

Power

Cordless, up to 5 hours on the floor

Walls

✅ Wall cleaning

Waterline

✅ Waterline and surface

Filter

Not stated

Controls

App, tap to retrieve

Warranty

3 years

Check price on Amazon

The Best Robotic Pool Cleaners for Inground Pools, Reviewed

Each review opens with the short verdict, then who should buy it and who should not. The detail underneath is there for when two picks look close.

1

Top pick · Best for long pools

Polaris 9550 Sport

The one for a long pool. Polaris says the 9550 Sport suits inground pools up to 60 ft, and the 70 ft swivel cable is long enough to reach the far end of a big pool.

• $$$ Premium
• Pool length Up to 60 ft
• Power Corded, 70 ft swivel cable
• Walls 4WD
• Filter 5 L canister

Check price on Amazon

Buy it if

You have a long or large inground pool, you are happy with a cable, and you want a remote and a big canister.

Skip it if

You want a cordless robot, or you need a stated waterline mode: the listing does not mention one.

The 9550 Sport is a corded, four-wheel-drive robot built for size. Polaris lists compatibility with inground pools up to 60 ft and ships it with a 70 ft cable and a swivel that is meant to reduce tangling. That cable is the reason it is here: a cordless robot is limited by its battery, while a corded one keeps going for as long as the cycle needs.

The canister is an extra-large 5 L, so a heavy week of leaves does not mean emptying it mid-cycle. Polaris lists five cleaning modes, a motion-sensing handheld remote, an Easy Lift System that helps bring the robot out of the water, and a dirty canister indicator. A premium caddy comes in the box.

What the listing does not say is whether this model scrubs the waterline, and it does not state a warranty or a cycle time. Check those on Polaris's own page if they matter to you.

What stands out

• Rated for inground pools up to 60 ft
• 70 ft swivel cable to reduce tangling
• Extra-large 5 L debris canister with a dirty canister indicator
• Handheld remote and a caddy included

Trade-offs

• Corded, so you manage a cable
• Waterline cleaning is not stated
• Weighs 43.62 lb per the listing, heavy to lift without Easy Lift

2

Best for most inground pools

Dolphin Nautilus CC Plus

The sensible default for a typical inground pool. Dolphin lists it for pools up to 40 ft, with an active scrubbing brush, wall climbing and a basket you empty from the top.

• $$$ Premium
• Pool length Up to 40 ft
• Power Corded, cable length not stated
• Walls Wall climbing
• Filter Top-load basket

Check price on Amazon

Buy it if

Your pool is a standard size, you want plug-and-play, and you value an easy filter more than a long feature list.

Skip it if

You want app control, a stated waterline mode or cordless operation: none of these is in the listing.

Most inground pools are not the biggest pool on the street, and for them a robot rated for 40 ft is plenty. The Nautilus CC Plus is Dolphin's answer: a corded robot with a wall-climbing scrubber brush and what the maker calls smart navigation, so it works out a route instead of bouncing around.

The filter is the part owners touch most, and Dolphin made it a top-load basket, so you lift the lid and rinse it with a hose without handling the robot upside down. The maker describes plug-and-play use: plug in, drop it in, power on, and a pool cleaned in 2 hours.

The listing does not give a cable length, a warranty or a waterline mode, so treat those as unknown. The listing weight is 20.8 lb.

What stands out

• Rated for inground pools up to 40 ft
• Active scrubbing brush and wall climbing
• Top-load filter basket you rinse with a hose
• Plug-and-play, with a cycle Dolphin gives as 2 hours

Trade-offs

• Cable length is not stated
• No waterline mode or app control stated
• Warranty is not stated in the listing

3

Best for mid-size pools

Dolphin Proteus DX3

The pick for a mid-size inground pool. It carries the same active scrubbing brush and top-load basket as the Nautilus CC Plus, rated for pools up to 33 ft.

• $$$ Premium
• Pool length Up to 33 ft
• Power Corded, cable length not stated
• Walls Wall climbing
• Filter Top-load basket

Check price on Amazon

Buy it if

Your pool is under 33 ft long and you want a corded Dolphin without paying for length you will not use.

Skip it if

Your pool is longer than 33 ft: step up to a robot rated for 40 ft or more.

Length is the first filter. If your pool is under 33 ft, the Proteus DX3 is rated for it and you do not need the longer robots above. Dolphin describes the same scrubbing approach as on its other models: a brush that scrubs actively, wall climbing, and a top-load basket with a plug-and-play start.

The listing gives 14.8 lb as the weight, which is light for a corded pool robot and matters on the day you lift it out. As with the Nautilus CC Plus, cable length, waterline cleaning, app control and warranty are not stated, so confirm them on the maker's page.

If you cannot decide between the two Dolphins, measure the longest straight run of your pool: that number decides it.

What stands out

• Rated for inground pools up to 33 ft
• Active scrubbing brush and wall climbing
• Top-load filter basket
• 14.8 lb per the listing

Trade-offs

• Capped at 33 ft, shorter than the Nautilus CC Plus
• Cable length and waterline mode not stated
• Warranty not stated

4

Best cordless for the waterline

Aiper Scuba X1

The cordless pick for a pool with a scummy tile line. AIPER lists floor, wall and waterline cleaning, 180 minutes of runtime and a fine 3 μm filter, with a 2-year warranty.

• $$$ Premium
• Power Cordless, 180 min
• Walls Wall cleaning
• Waterline Up to 2 in above the line
• Filter 3 μm MicroMesh

Check price on Amazon

Buy it if

You want no cable, you care about the waterline, and your pool is not so long that a battery runtime is a limit.

Skip it if

You need a stated maximum pool length: the listing gives none.

The waterline is where an inground pool shows its age, and this is the robot on the list that talks about it most directly. AIPER says its WaveLine 2.0 technology reaches 2 in above the waterline and holds 60 seconds of sustained horizontal cleaning, and that two front PVC brushes work on wall stains.

Suction is rated at 6,600 GPH with dual jets, and the multi-layer filtration captures debris down to 3 μm. It charges on an in-box wireless dock in about 4 hours for a full charge, and it receives over-the-air updates.

The feature text of this listing calls the robot the Scuba X1. The listing states no pool length.

What stands out

• Floor, wall and waterline cleaning
• 180 minutes of runtime
• 3 μm MicroMesh filter
• Wireless charging dock and 2-year warranty

Trade-offs

• No maximum pool length stated
• Four hours for a full charge
• Runtime is the limit on a large pool

5

Best for smart coverage

WYBOT C2 Vision

The one for owners who like to control the route. WYBOT lists eight modes, six custom paths for floors and walls, and an AI camera that is said to learn your pool's debris hot spots.

• $$$ Premium
• Pool length Up to 2,150 sq ft
• Power Cordless, runtime not stated
• Walls Wall mode
• Waterline Waterline mode

Check price on Amazon

Buy it if

You like using an app, your pool has awkward corners, and you want to choose between a floor-only run and a full-pool one.

Skip it if

You want a simple start-and-forget robot, or you need a stated runtime and warranty: the listing gives neither.

Most robots clean in a pattern the maker chose. The C2 Vision gives you the choice. In the WYBOT app it lists eight cleaning modes covering waterline, wall, floor, full pool and AI vision, and an expert mode with six paths: three floor patterns, including S and cross, and three wall patterns in N, H and V shapes.

WYBOT says the onboard AI camera detects high-debris spots, extends runtime and raises suction there, and learns your pool's features within a month. It filters in two layers, a 180 μm basket and a HEPA filter, and covers a maximum of 2,150 sq ft. You can schedule runs from the app.

The listing says it fits both inground and above-ground pools. It does not state a battery runtime, a brush type or a warranty.

What stands out

• Eight modes including waterline, wall and floor
• Six custom routes in expert mode
• 180 μm basket plus HEPA filter
• App scheduling

Trade-offs

• Runtime is not stated
• Maximum cleaning area is 2,150 sq ft, so measure a very large pool
• Warranty and brush type not stated

6

Best cordless for long pools

Polaris Freedom Plus

The cordless option for a longer pool. Polaris lists it for inground pools up to 50 ft, with a handheld remote that calls the robot to the waterline and an app for status.

• $$$ Premium
• Pool length Up to 50 ft
• Controls Remote, iAquaLink app

Check price on Amazon

Buy it if

You want no cable on a pool that is longer than most cordless robots are rated for, and you like the Polaris app.

Skip it if

You need a stated runtime or waterline mode: the listing gives neither.

Cordless robots tend to be rated for smaller pools, so a 50 ft figure stands out. Polaris says the Freedom Plus cleans inground pools up to 50 ft. It ships with an outdoor-rated charging caddy that charges the robot fully in five hours or less from a GFCI outlet.

Retrieval is where it earns its name. A handheld remote uses LiFi to communicate with the cleaner underwater and call it to the waterline; you can also wait for the end-of-cycle waterline retrieval or use the included hook and a pole. The Wi-Fi iAquaLink app shows charging status, lets you pick cleaning modes and sends a push when the cycle ends.

The listing does not state battery runtime, filter type or whether it climbs walls, so check those. Polaris gives a two-year limited warranty, and the listing weight is 40.8 lb.

What stands out

• Cordless and rated for pools up to 50 ft
• Remote, waterline retrieval and hook: three ways to get it out
• iAquaLink app with status and push notifications
• Two-year limited warranty

Trade-offs

• Runtime and wall cleaning not stated
• Filter type not stated
• 40.8 lb per the listing

7

Best for surface debris

Beatbot Sora 70

The pick when leaves float. Beatbot lists floor, wall, waterline and surface cleaning, a 10,000 mAh battery for up to 5 hours on the floor, and cleaning in shallow areas down to 8 in.

• $$$ Premium
• Pool length Up to 3,200 sq ft per charge
• Walls Wall cleaning
• Waterline Waterline and surface
• Controls App, tap to retrieve

Check price on Amazon

Buy it if

Your pool collects leaves on the surface, or you have shallow ledges and want them cleaned too.

Skip it if

You want the lowest weight: the listing gives 22.93 lb.

Most robots work from the floor up and leave the surface to a skimmer. Beatbot's JetPulse system uses dual water jets to make four streams that guide leaves and surface debris into the suction inlet, and the robot also lists waterline, wall and platform cleaning. Shallow areas as low as 8 in are covered, which suits a ledge.

The battery is 10,000 mAh, and Beatbot says it runs up to 5 hours on floor cleaning and covers up to 3,200 sq ft per charge. Suction is rated at 6,800 GPH. After a cycle it parks at the pool edge, drains internal water and floats, and the app can bring it back with one tap.

The listing states a 3-year protection plan. It does not state a maximum pool length or a filter type.

What stands out

• Surface, waterline, wall and floor cleaning
• Up to 5 hours on the floor and 3,200 sq ft per charge
• Shallow areas down to 8 in
• Auto parking and tap-to-retrieve

Trade-offs

• No maximum pool length stated
• Filter type not stated
• 22.93 lb per the listing

Pool Length, Cable Length and Runtime

Length is the number to settle first, because the makers rate their robots very differently. Measure the longest straight run of your pool, add a little, and shortlist from there.

Match the Rating to the Longest Run

The ratings on this page run from 33 ft on the Proteus DX3, through 40 ft on the Nautilus CC Plus and 50 ft on the Freedom Plus, to 60 ft on the 9550 Sport. The WYBOT and Beatbot rate by area rather than length, and the AIPER states neither. For comparison, Hayward's TigerShark QC lists coverage of up to 20 x 40 ft, which shows how makers can describe the same pool in different ways.

Corded: What the Cable Does

A corded robot takes power through a cable, and the cable has to reach the far end of the pool. Polaris gives 70 ft for the 9550 Sport and a swivel to reduce twisting; the Dolphin listings here do not state a cable length, so check it before you buy against the distance from your outlet to the pool's far corner. A corded robot has no battery to run flat, which is the main advantage on a long or deep pool.

Cordless: What the Battery Limits

Cordless robots trade the cable for a runtime. AIPER states 180 minutes, Beatbot up to 5 hours on floor cleaning, and Polaris and WYBOT do not give a figure. The battery matters most on a pool that is large or full of debris, because a robot that has to be recharged halfway leaves the job for later. Our guide to cordless robotic pool cleaners goes deeper on this trade-off.

Fiberglass, Plaster and Vinyl: Brushes That Suit Each

The surface of your pool decides how a robot should scrub, and listings say less about it than you would hope. Few of the robots here name the surfaces they suit, so the safest rule is to read the maker's manual for your pool type before you buy.

Plaster and Concrete

Plaster and concrete are rougher surfaces, so an active scrubbing brush is the feature to look for. Dolphin describes active scrubbing on the Nautilus CC Plus and Proteus DX3, and AIPER lists two front PVC brushes for wall stains on its cordless robot. The listings do not say how the brushes wear on a rough finish, so ask the maker.

Fiberglass

Fiberglass is smooth, so the question is grip on the walls and a brush that is gentle on the finish. The brush material is not stated for most robots on this page, so ask the maker if you have a fiberglass shell. Dolphin's Escape listing names vinyl, fiberglass and gunite among the surfaces it suits, so makers do publish this on some models.

Vinyl Liner

A liner is the surface to be most careful with, so confirm in writing that the robot and its brush are suited to vinyl before you buy. The Polaris listings describe a swivel cable to reduce tangling, which helps keep the cable from twisting around the robot. None of the seven listings here states a vinyl rating, so this is a question for the maker.

Steps, Ledges and Tanning Shelves

Steps, benches and shallow ledges are the areas robots most often skip, and they are exactly where debris collects in an inground pool. The listings here say little about them, so this section is mostly about what to look for.

What the Makers State

Of the seven, only the Beatbot Sora 70 states shallow-area cleaning, as low as 8 in, and it lists platform cleaning too. Dolphin's cordless Nautilus EON models list steps and sun ledges, and you can compare them in our Dolphin pool cleaner reviews. The other corded robots here do not mention steps at all.

Why a Skipped Step Matters

Debris that a robot leaves on a step or shelf can wash back into the pool when people walk in. If you have wide steps or a tanning shelf, treat step cleaning as a requirement, not a bonus.

A Workaround for Corded Robots

If your favorite robot does not mention steps, plan to net or brush the steps by hand. It is a fair trade for a robot that suits your pool in every other way. Our guides to Polaris and Beatbot robots go into each maker's range.

Inground Robotic Pool Cleaner FAQ