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Dolphin (Maytronics) Nautilus EON 120d vs Polaris Freedom Plus

Researched by Riley Hart · prices checked Oct 26, 2026

Short answer · checked Oct 26, 2026

As of Oct 26, 2026, the Dolphin (Maytronics) Nautilus EON 120d costs $1,199 and the Polaris Freedom Plus costs $1,399, so the Dolphin (Maytronics) Nautilus EON 120d is $200 cheaper. Pick the Dolphin (Maytronics) Nautilus EON 120d for fine dirt and sun ledges. Pick the Polaris Freedom Plus for cordless buyers with in-ground pools.

Pool
Dolphin (Maytronics)Nautilus EON 120d
Cleans
Floor
Power
Cordless
Runtime
1.5 to 2.5 h cycles
Max pool
50 ft long
ON SALEPrice tracked daily
$1,199Check price at Amazon →

A good fit for cordless buyers who care most about trapping fine dirt and want a robot that reaches 8 inch sun ledges. PCWorld found its filter caught debris very well but was a real chore to empty, and it sometimes missed corners and leaves on steps. Check the warranty, which is only 1 year on the Nautilus listing.

Full Dolphin (Maytronics) Nautilus EON 120d review →
Pool
PolarisFreedom Plus
Cleans
Floor
Power
Cordless
Runtime
Up to 2.5 h
ON SALEPrice tracked daily
$1,399Check price at Amazon →

PCWorld's top cordless pick: light, quick to drain, and easy to retrieve from the waterline, with a remote that steers it underwater. Runtime is about 2.5 hours and charging takes up to 5, and The Pool Nerd notes suction fades as the battery drains. Skip it for above-ground pools or if you want a weekly timer.

Full Polaris Freedom Plus review →

Side by side

Dolphin (Maytronics) Nautilus EON 120dPolaris Freedom Plus
Price$1,199$1,399
3 year cost$1,199$1,427
Our scoreNot scored yetNot scored yet
Rank in Pool#11#13
Statuson saleon sale
Warranty1 year (Nautilus EON 120d listing)2 year limited
Pool typesIn-ground and above-ground; rectangular, round, free form, kidneyIn-ground only, all surfaces
CleansFloor, walls, waterline, steps, sun ledges as shallow as 8 in, cornersFloor, walls, waterline; modes for floor only, waterline only, all three, and SMART
PowerCordless, lithium-ion (capacity not published)Cordless, lithium-ion (PCWorld lists 9,600 mAh)
RuntimeCycles of 1.5, 2 or 2.5 h; Maytronics blog claims up to 4 h per charge; UltraRun short cycles claimed to last up to 2.5 weeks per chargeUp to 2.5 h per charge
Charge timen/aUnder 5 h in the outdoor charging caddy
FilterDebrisLock ultra fine backwash filter, top access4 L canister with clear lid; no dirty canister indicator
Max pool sizePools up to 50 ft longNot published; SMART mode sizes the run to your pool
AppMaytronics One app for scheduling, monitoring and alertsiAquaLink app (2.4 GHz Wi-Fi, not underwater); LiFi handheld remote works underwater
Weight24.255 lbAbout 20 lb (PCWorld)
Warranty1 year on the Nautilus listing (3 years on the store exclusive EON 120d listing)2 year limited (Leslie's)
Best forfine dirt and sun ledgescordless buyers with in-ground pools
Skip ifyou hate fiddly filter cleaningyou have an above-ground pool

Specs are maker claims unless a reviewer is named. Prices from the stores we link, checked daily.

What reviewers found

Dolphin (Maytronics) Nautilus EON 120d

  • PCWorld: Tested the EON 120d: DebrisLock filter trapped all types of debris and coverage reached about 95% on the longest cycle, but emptying the filter was a huge pain, it missed corners, failed to start twice at first, and often flipped onto its back. Source
  • The Pool Nerd: Notes the EON line cleans water as shallow as about 8 in with better than basic mesh filtering, but still requires hooking, lifting, drying and charging; Clicker retrieval is mentioned for the 120d. Source

Polaris Freedom Plus

  • PCWorld: Best cordless pick; averaged about 95% coverage over several weeks, ran a little over 2.5 h on the thorough setting, missed a corner patch and some step leaves, and Wi-Fi dropped once underwater. Source
  • The Pool Nerd: Runner up cordless pick in 2026; praises wall climbing and runtime versus many cordless units but says suction and scrubbing fade as the battery drains. Source

Pros and cons

Dolphin (Maytronics) Nautilus EON 120d

Pros

  • Very effective fine debris filter per PCWorld
  • Cleans ledges as shallow as 8 in
  • App scheduling with UltraRun short cycles
  • Handled stairs well in testing

Cons

  • Filter is hard to empty per PCWorld
  • Missed corners and some step leaves
  • Battery size and charge time not published
  • 1 year warranty on the Nautilus version

Polaris Freedom Plus

Pros

  • About 95% coverage in PCWorld testing
  • Light and drains water fast
  • Underwater remote with Easy Lift
  • Parks at the waterline

Cons

  • In-ground only
  • No scheduling
  • Up to 5 h to charge
  • No brand or Amazon price confirmed

Questions buyers ask

Which is better, the Dolphin (Maytronics) Nautilus EON 120d or the Polaris Freedom Plus?

Pick the Dolphin (Maytronics) Nautilus EON 120d for fine dirt and sun ledges. Pick the Polaris Freedom Plus for cordless buyers with in-ground pools.

Which is cheaper?

The Dolphin (Maytronics) Nautilus EON 120d at $1,199, versus $1,399 for the Polaris Freedom Plus, checked Oct 26, 2026. Over 3 years with running costs: $1,199 vs $1,427.

What is the difference between the Nautilus EON 120d and the Freedom Plus?

Pool types: In-ground and above-ground; rectangular, round, free form, kidney on the Nautilus EON 120d, In-ground only, all surfaces on the Freedom Plus. Cleans: Floor, walls, waterline, steps, sun ledges as shallow as 8 in, corners on the Nautilus EON 120d, Floor, walls, waterline; modes for floor only, waterline only, all three, and SMART on the Freedom Plus. Power: Cordless, lithium-ion (capacity not published) on the Nautilus EON 120d, Cordless, lithium-ion (PCWorld lists 9,600 mAh) on the Freedom Plus.

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