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Robovations
Robovations™
Robot Autonomy, Classified
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Comparison · 2 robots

Maytronics Dolphin Nautilus Titan · Polaris 9550 Sport

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. Maytronics Dolphin Nautilus Titan
  2. Polaris 9550 Sport

Polaris

Polaris 9550 Sport

Autonomy
IIAssisted Autonomy
Score
63/100 Capable
Readiness
Not assessed
Price
$1,959.99list

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
II
Assisted
Runs preset routines, needs rescue
Maytronics Dolphin Nautilus TitanPolaris 9550 Sport
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
  • Polaris 9550 Sport70
18median 72 across 433 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
  • Polaris 9550 Sport50
0median 70 across 421 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

Edge-case recovery10% of score
Does it recover from the failures its category presents
  • Polaris 9550 Sport45
18median 52 across 320 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

Operating envelope4% of score
How far conditions can vary before performance drops
  • Polaris 9550 Sport68
28median 68 across 397 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

Dependability

Field failure rate16% of score
Documented hardware failures per owner-year
  • Polaris 9550 Sport100
6median 70 across 359 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

Software stability14% of score
Whether updates fix more than they break
  • Polaris 9550 Sport33
15median 65 across 342 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

Support longevity10% of score
Committed parts, service and updates, with dates
  • Polaris 9550 Sport73
0median 62 across 429 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

Ownership burden

Routine maintenance12% of score
Hands-on time it asks for in normal operation
  • Polaris 9550 Sport59
22median 67 across 434 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

Consumables8% of score
Parts that must be bought to keep it working
  • Polaris 9550 Sport61
8median 69 across 434 scored robots100

Not scored: Maytronics Dolphin Nautilus Titan

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
  • Maytronics Dolphin Nautilus Titan$1,599
  • Polaris 9550 Sport$1,959.99
$299median $1,249$4,250
Weight65 with a published figure
  • Maytronics Dolphin Nautilus Titan22.6 lbs
  • Polaris 9550 Sport21 lbs
7.9 lbsmedian 20.8 lbs46.3 lbs
Height60 with a published figure
  • Maytronics Dolphin Nautilus Titan12.5 in
  • Polaris 9550 Sport12.5 in
3.8 inmedian 10.6 in29.9 in

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

04 Ownership

What the numbers leave out.

The trade-off

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

Maytronics Dolphin Nautilus Titan

A 50 ft rating and waterline scrubbing at $1,599, with a 1-year warranty and no independent test behind either claim.

Polaris 9550 Sport

Mains power over a 70 ft cable takes charging and battery aging out of ownership entirely, but the cable has to be untwisted after runs, inspected for damage, and managed at the pool edge. Cordless units drop the tether and take on a battery instead.

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.

Maytronics Dolphin Nautilus Titan
Above-ground pool owners
Maytronics classifies the Nautilus Titan for in-ground pools only.
Buyers who want independent test results first
No hands-on review was found; the only independent coverage found is a Pool Magazine deals roundup.
Owners who want a full-filter warning
Maytronics' spec table lists no full filter indicator, so the filter has to be checked by eye.
Buyers wanting a longer warranty
Maytronics lists a 1-year warranty for the Nautilus Titan.
Polaris 9550 Sport
Operators wanting app scheduling or remote monitoring
There is no Wi-Fi, no app and no network connection of any kind. Scheduling is set on the onboard 7-day timer and manual control is a handheld remote, both of them local to the poolside.
Pools with complex geometry and tight corners
The unit runs pre-programmed patterns rather than mapping the pool, and its 4WD body is bulky in tight corners. Compact pools with numerous tanning ledges, niches and step returns see uneven coverage.
Above-ground pools or pools with minimal cable infrastructure
9550 Sport assumes in-ground pools with standard cable storage and management. Above-ground and natural pools lack the electrical infrastructure and cable routing assumed in product design.

What stays your job

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

Maytronics Dolphin Nautilus Titan
  • After every use: Lift the robot out using pick-up mode and empty the top-access filter.
  • As needed: Switch to the included ultra-fine filter kit for fine debris.
  • As needed: Check the anti-tangle swivel cable for twists.
  • As needed: Inspect the two active brushes and replace them when worn.
  • Seasonally: Rinse and store the robot and power supply out of the sun when the pool closes.
Polaris 9550 Sport
  • After each cycle: Lift the unit out, letting the EasyLift system drain the water as it rises, then empty the 5 L canister and rinse the filter media. The Dirty Canister Indicator signals when the canister needs attention.
  • Weekly: Inspect the oscillating brushes for wear and clear debris wrapped around them.
  • Weekly: Inspect the 70 ft cable for cuts, kinks and swivel wear, and untwist it. A damaged cable on a mains-powered submerged appliance is replaced, never spliced or extended.
  • Seasonally: Rinse the unit with fresh water and store it on its caddy out of direct sun and away from freezing temperatures.
  • As wear shows: Replace brushes and filter media. Polaris publishes no fixed replacement interval or price for these parts.
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
Maytronics Dolphin Nautilus Titan Pending 2 Sep 2026
Polaris 9550 Sport Discontinued 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.