Head-to-Head Comparison

Niya Sonar 30 vs Dolphin Sigma

Our pool experts compare features, filtration, specs, and value to help you pick the right robotic pool cleaner.

Niya Sonar 30

Explore Niya →

Daily recharge required

$379

View Sonar 30

Our Top Pick

Dolphin Sigma

Explore Dolphin ProLine™ →

★★★★☆ 4.4 (178)

$2399$2999

Save $600

Open Box $2349 Refurbished $1869

View Sigma

Dolphin Sigma or Niya Sonar 30 — which wins?

Our pick: the Dolphin Sigma

Diving into the Niya Sonar 30 vs Dolphin Sigma, our pool experts weigh filtration, cleaning coverage, smart features, and value. For most pools, the Dolphin Sigma is the robot we recommend — and right now you save $600.

More ways to save on the Sigma

Certified & warranty-backed

Save $50

Certified Open Box · $2349

Save $530

Certified Refurbished · $1869

What Sets Them Apart

Key Differences

Sonar 30

Not Sold by Poolbots - Maytronics sells the Sonar 30 directly and through its dealers
No Smartphone App - No control or scheduling from your phone
1-Year Warranty - The Dolphin Premier and Sigma carry 3 years

Sigma

Includes NanoFilters™ - Captures small debris other cleaners miss
Waterline Cleaning - Cleans the pool floor, wall, & waterline
Triple Commercial Grade Motors - 3 ProLine Motors filter 4500 GPH+
myDolphin Plus App - Schedule and clean the Sigma from anywhere
Gyroscope - Gyroscopic sensors control and monitor every movement
3 Year Warranty - Longest warranty available

Side by Side

Feature Comparison

The features that matter most when comparing the Niya Sonar 30 and Dolphin Sigma.

Feature	Sonar 30	SigmaOur Pick
Standard Filter
NanoFilters™
Multi-Media™
Oversized Leaf Bag
Wall Climbing
Waterline Cleaning
Hands-Off Weekly Timer
Hands-Off Daily Cleaning	Recharge daily	✓ No manual recharge
Smartphone App Control
Full Filter Indicator
Gyroscope Navigation
Dual Stabilizer
Anti-Tangle Swivel
3-Year Warranty

Explained

Compare Features in Detail

NanoFilters™

Often overlooked, a NanoFilter™ can be the most important part of a pool robot. Without it, microscopic particulate — fine dust, pollen, and algae — passes right through the standard filters found on most robots. These ultra-fine filters trap that debris for a noticeably cleaner, healthier pool. Learn more ›

Niya Sonar 30 does not

Dolphin Sigma includes this

Hands-Off Weekly Timer

An automatic pool cleaner should be automatic. A true weekly timer runs a complete pool-cleaning cycle on schedule — every day, every other day, or a few times a week — without you retrieving or recharging the robot between cycles. An app schedule on a cordless robot is not hands-off if the cleaner still has to be removed and recharged between cycles, so Poolbots does not count that as a true weekly timer.

Niya Sonar 30 does not

Dolphin Sigma includes this

Smartphone App Control

App connectivity can put scheduling, cycle selection and cleaner status on your phone, although the exact controls vary by model.

Niya Sonar 30 does not

Dolphin Sigma includes this

Dual Stabilizer

Essential for waterline cleaning, dual stabilizers let the unit cling to the walls for a more precise, deeper clean at the waterline — with increased agility and an easy pickup handle.

Niya Sonar 30 does not

Dolphin Sigma includes this

Anti-Tangle Cable Swivel

Say goodbye to tangled cords. An anti-tangle swivel lets the robot move 360° around your pool without the cord getting tangled, so you can sit back while it cleans. Learn more ›

Niya Sonar 30 does not

Dolphin Sigma includes this

Warranty Coverage

A robot is only as good as its warranty. The Niya Sonar 30 is backed by a 1-year warranty, while the Dolphin Sigma carries a 3-year warranty. Buying through an Authorized Dealer like Poolbots gets you the full manufacturer warranty — never pro-rated or limited by cleaning cycles — plus a 30-day in-pool trial with no restocking fees. Learn more ›

Niya Sonar 30 1-year warranty

Dolphin Sigma 3-year warranty

Watch

Videos

See the Niya Sonar 30 and Dolphin Sigma in action.

The Details

Specifications

	Sonar 30	Sigma
Part Number	07.009.0002	99991036-SPLI
Waterline Cleaning	Yes	Yes
Multi-Media®	No	No
Filters Included	1	2
Filter Cleaning	Top Access	Ultra-fine NanoFilters and Standard Filter Cartridge sets
Cleaning Coverage	Floor, Walls and Waterline	Floor, Walls, Waterline
Cleaning Cycle	—	2.5 hours
Number of Brushes	2	4
Cable Length	No Cable	55 ft
Anti-Tangle Swivel	—	Yes
Pool Types	In-Ground & Above Ground	In Ground
Maximum Pool Size	—	50 ft
Pool Shape	Rectangle, Round, Freeform, or Kidney	Rectangle, Oval, or Freeform
Obstacles	—	Steps, Ladder, Drain Cover, Ledges, Pop-Ups
Surface	Liner, Gunite, Stainless Steel, Ceramic, Glass, Fiberglass	Concrete, Plaster, Gunite, Pebble, Tile, Vinyl Liner, Fiberglass
Media-Alert®	—	No
Hands-Off Weekly Timer	No	Yes
Daily Recharging Required	Yes	No
Smartphone App	No	Yes
Remote Operation	—	Yes - Through App
Restocking Fee	—	No
Warranty	1 Years	3 Years