Quick verdict
The value Dolphin for owners who want scheduling and 40-foot coverage without premium pricing. Floor-and-wall only, but the weekly timer is a genuine convenience at this tier.
Ideal for
- In-ground or above-ground pools up to 40 ft
- Owners who want a weekly timer on a budget
- Light-handling seekers
Not ideal for
- Waterline scum problems
- App-driven owners
- Very large pools
The full picture
The Cayman is a value Dolphin with a useful extra: a weekly timer, which many budget models skip. It cleans floors and walls for in-ground and above-ground pools up to 40 feet, uses an easy top-load fine filter, and weighs just 14.6 lb for easy handling. No waterline cleaning and no app, but the scheduler and larger 40-foot coverage make it a step up from the smaller Nautilus CC.
Dolphin Cayman at a glance
- Cleaning coverage
- Floor + walls
- Pool type
- In-ground and above-ground
- Max pool size (ft)
- 40
- Cordless
- No
- Weight (lb)
- 14.6
- Wall climbing
- Yes
- Waterline cleaning
- No
- Filtration
- Top-load fine filter kit
- App control
- No
- Weekly timer
- Yes
Source: Compiled from Maytronics product documentation, published specifications, warranty terms, and aggregated verified-owner feedback.
This is a research-based review — our analysis draws on manufacturer specifications, manuals, warranty terms, and verified owner feedback rather than our own hands-on testing, and we note where a detail couldn't be confirmed. How we review
The in-depth review
The Cayman is the value Dolphin for owners who want scheduling and a bit more reach without paying premium prices. It's floor-and-wall only, but a weekly timer at this tier is a genuine convenience.
The value proposition
It cleans the floor and walls of in-ground or above-ground pools up to 40 feet — a useful step beyond the 33-foot Nautilus — and the weekly timer lets it run on autopilot, which is rare at this price. At 14.6 pounds it's light to lift in and out, and the top-load filter keeps upkeep simple.
The trade-offs
There's no waterline cleaning and no app, and navigation is random-pattern rather than mapped. It does the fundamentals well; it just doesn't do the extras.
Performance breakdown
Research-based editorial judgments from specs, warranty terms, and verified owner feedback — not lab measurements. How we score
Pros and cons
What works
- Weekly timer at a value price
- 40-foot coverage
- Light 14.6 lb handling
- Easy top-load filter
What doesn't
- No waterline cleaning
- No app
- Random-pattern navigation
Best alternatives to Dolphin Cayman
Dolphin (Maytronics)
Dolphin E10
Best for above-ground pools
A purpose-built floor cleaner for above-ground pools that brings Maytronics reliability to a budget price.
Mammotion
Mammotion Spino E1
Best value newcomer
A newcomer's midrange cordless: SmartArc path planning, waterline cleaning, and long runtime at a value price.
Aiper
Aiper Scuba N1 Plus
Best midrange Aiper cordless
A midrange cordless Aiper: floor, wall, and waterline cleaning with MicroMesh filtration and adaptive navigation for mid-size pools.
Pentair
Prowler 920
Pentair
Pentair Prowler 920
Best value Pentair
The non-Wi-Fi Pentair: straightforward corded floor, wall, and tile-line cleaning with top-access filtration for in-ground pools.
Frequently asked questions
Is the Dolphin Cayman cordless or corded?
The Dolphin Cayman is corded — it runs on continuous mains power through a floating cable, so there is no battery to recharge between cycles.
What does the Dolphin Cayman clean?
The Dolphin Cayman is rated to clean the floor and walls. It is an underwater cleaner, so it does not skim floating debris off the surface.
What size pool is the Dolphin Cayman designed for?
It is rated for pools up to 40 feet. On a longer pool it covers less ground per cycle and can miss spots, so size up if your pool runs past that.
Does the Dolphin Cayman have app control?
No — the Dolphin Cayman runs from on-unit controls rather than a mobile app, though it does include a weekly timer.
What filtration does the Dolphin Cayman use?
It filters debris through a top-load fine filter kit. Rinse it after each cycle so suction and pickup stay strong.
What warranty does the Dolphin Cayman come with?
It comes with a 2-year limited manufacturer warranty (confirm current terms at purchase).