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

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.

Prices checked Oct 26, 2026. HTML version: https://robotsforthat.com/vs/dolphin-nautilus-eon-120d-vs-polaris-freedom-plus/

## Side by side

| | Dolphin (Maytronics) Nautilus EON 120d | Polaris Freedom Plus |
|---|---|---|
| Price | $1,199 | $1,399 |
| 3 year cost | $1,199 | $1,427 |
| Our score | Not scored yet | Not scored yet |
| Rank in Pool | #11 | #13 |
| Status | on sale | on sale |
| Warranty | 1 year (Nautilus EON 120d listing) | 2 year limited |
| Pool types | In-ground and above-ground; rectangular, round, free form, kidney | In-ground only, all surfaces |
| Cleans | Floor, walls, waterline, steps, sun ledges as shallow as 8 in, corners | Floor, walls, waterline; modes for floor only, waterline only, all three, and SMART |
| Power | Cordless, lithium-ion (capacity not published) | Cordless, lithium-ion (PCWorld lists 9,600 mAh) |
| Runtime | Cycles 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 charge | Up to 2.5 h per charge |
| Charge time | n/a | Under 5 h in the outdoor charging caddy |
| Filter | DebrisLock ultra fine backwash filter, top access | 4 L canister with clear lid; no dirty canister indicator |
| Max pool size | Pools up to 50 ft long | Not published; SMART mode sizes the run to your pool |
| App | Maytronics One app for scheduling, monitoring and alerts | iAquaLink app (2.4 GHz Wi-Fi, not underwater); LiFi handheld remote works underwater |
| Weight | 24.255 lb | About 20 lb (PCWorld) |
| Warranty | 1 year on the Nautilus listing (3 years on the store exclusive EON 120d listing) | 2 year limited (Leslie's) |
| Best for | fine dirt and sun ledges | cordless buyers with in-ground pools |
| Skip if | you hate fiddly filter cleaning | you have an above-ground pool |

## 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](https://pcworld.com/article/3084901/maytronics-dolphin-eon-120d-review.html)
- 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](https://www.thepoolnerd.com/best-cordless-robotic-pool-cleaners)

### 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](https://www.pcworld.com/article/2365773/polaris-freedom-plus-pool-cleaning-robot-review.html)
- 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](https://www.thepoolnerd.com/best-cordless-robotic-pool-cleaners)

## 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.

Full reviews: [Dolphin (Maytronics) Nautilus EON 120d](https://robotsforthat.com/robot/dolphin-nautilus-eon-120d/index.md), [Polaris Freedom Plus](https://robotsforthat.com/robot/polaris-freedom-plus/index.md)