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Comparison · 2 robots

Pentair Prowler 930W · Wybot S2

All robot pool cleaners. Every measure below is plotted against the full class, so a difference can be read against how much the class itself varies.

  1. Pentair Prowler 930W
  2. Wybot S2
Pentair

Pentair Prowler 930W

Autonomy
IIIConditional Autonomy
Score
Not scored
Readiness
Not assessed
Price
$999list

Wybot

Wybot S2

Autonomy
IIIConditional Autonomy
Score
65/100 Capable
Readiness
Ready Now
Price
$999.99list

Up to three

01 Classification

What each one does on its own.

The Autonomy Ladder is the same five rungs for every robot on the site. A rung describes the conditions a robot handles without you, not how good it is.

V
Generalized
Any task, any setting
IV
Environmental
Handles new obstacles without help
III
Conditional
Finishes familiar jobs on its own
Pentair Prowler 930WWybot S2
II
Assisted
Runs preset routines, needs rescue
I
Manual
One action, on command
02 Assessment

Where they actually differ.

The Robovations Score is nine inputs across three pillars, each weighted as shown and each scored so that more is better. A robot can lead on one and trail on another, which is the point of showing them apart. Cost of ownership and data handling are reported on each robot's own page and are never averaged into the score.

Capability

Task completion16% of score
Does it finish the job it is sold to do, unattended
  • Wybot S275
18median 72 across 433 scored robots100

Not scored: Pentair Prowler 930W

Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
  • Wybot S250
0median 70 across 421 scored robots100

Not scored: Pentair Prowler 930W

Edge-case recovery10% of score
Does it recover from the failures its category presents
  • Wybot S230
18median 52 across 320 scored robots100

Not scored: Pentair Prowler 930W

Operating envelope4% of score
How far conditions can vary before performance drops
  • Wybot S270
28median 68 across 397 scored robots100

Not scored: Pentair Prowler 930W

Dependability

Field failure rate16% of score
Documented hardware failures per owner-year
  • Wybot S270
6median 70 across 359 scored robots100

Not scored: Pentair Prowler 930W

Software stability14% of score
Whether updates fix more than they break
  • Wybot S265
15median 65 across 342 scored robots100

Not scored: Pentair Prowler 930W

Support longevity10% of score
Committed parts, service and updates, with dates
  • Wybot S252
0median 62 across 429 scored robots100

Not scored: Pentair Prowler 930W

Ownership burden

Routine maintenance12% of score
Hands-on time it asks for in normal operation
  • Wybot S268
22median 67 across 434 scored robots100

Not scored: Pentair Prowler 930W

Consumables8% of score
Parts that must be bought to keep it working
  • Wybot S280
8median 69 across 434 scored robots100

Not scored: Pentair Prowler 930W

03 Measured against the class

How far apart is a long way?

A number only means something next to the spread it sits in. Each track below is the real range across every classified robot in the class, with the median marked.

Price69 with a published figure
  • Pentair Prowler 930W$999
  • Wybot S2$999.99
$299median $1,249$4,250

Not compared, because fewer than two of these robots carry a published figure: Suction, Runtime, Charge time, Noise, Weight, Height.

04 Ownership

What the numbers leave out.

The trade-off

What each design gives up to be good at what it is good at.

Pentair Prowler 930W

Corded power eliminates the battery but adds tether management. There is no charging dock to maintain and no runtime ceiling, but the cable becomes a season-long fixture that needs untangling before a run, and the cleaner has to come out of the pool before anyone swims.

Wybot S2

No dock and no cable keeps the deck clear and nothing trailing into the water, and it also means every cycle starts and ends by hand: the owner lowers the machine in, lifts it out, and rinses the filter. A recharge takes about 3 hours.

Who each one is wrong for

Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.

Pentair Prowler 930W
Pools farther than 60 feet from a power outlet
The cable is 60 feet, about 18.3 metres, and that is the whole working radius. The power supply must sit within reach of a GFCI-protected outlet; an extension cord is not a workaround on a mains-powered cleaner.
Owners prioritizing hands-off operation
Requires rinsing the filtration basket after runs, seasonal brush and track inspection, and winterization. The cleaner also has to come out of the pool before anyone swims. Not a set-it-and-forget-it system.
Homes with 5 GHz-only WiFi or poor signal
App-based scheduling depends on reliable 2.4 GHz WiFi. Weak coverage leads to connection drops and delayed operation.
Wybot S2
Pools larger than 3,230 sq ft
Wybot rates the S2 by area, up to 3,230 sq ft of floor and wall. Larger pools sit outside that rating, and 210 minutes on a charge is the ceiling on a single cycle.
Owners who want the machine to empty its own filter
The base S2 ships without a dock and has no self-emptying arrangement. The filter is pulled and rinsed with fresh water after every cycle, and more often through heavy leaf fall.
Owners who want the machine to launch itself
The S2 is lifted into the pool and lifted out by hand. The WYBOT app schedules up to four runs a week on a cycle timer, but the machine has to be in the water when a scheduled run begins.

What stays your job

The upkeep ownership hands back to you, whatever the autonomy level says.

Pentair Prowler 930W
  • Every use: Remove the cleaner and its cable from the pool before anyone enters the water; inspect the cable for damage and tangles.
  • After each run: Rinse the top filtration basket with hose water; inspect drive tracks and brushes.
  • Monthly: Check cable swivel connector for corrosion.
  • Seasonally: Inspect brush bristles for wear; winterize motor and cable connections; drain and store upright.
  • Annually: Full cable and connector inspection per the manual.
Wybot S2
  • After every use: Rinse the filter cartridge with fresh water; tap the bristles to dislodge debris.
  • Weekly: Inspect the drive tracks and gripper contact pads for algae buildup; wipe with a soft cloth.
  • Every 3-6 months: Replace the filter media or brushes if the bristles are compressed or flow has dropped.
  • Annually: Deep-clean the housing and check the seals before storage; store the machine indoors, charged, and out of freezing temperatures.
05 Evidence

How much each of these is standing on.

Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.

Evidence behind each classification
Robot Evidence status Sources reviewed Last assessed
Pentair Prowler 930W Discontinued 5 Aug 2026
Wybot S2 Pending 2 Aug 2026

Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.