Clear UV vs. Dolphin Cayman: Is the Waterline Worth $870?

The Dolphin Cayman already does most of what owners ask from a corded pool robot. It scrubs the floor, climbs walls, carries debris in a top-loading basket, and starts from a weekly timer. Maytronics listed it at $1,129 on October 1, 2026.

The Clear UV costs $1,999. It also climbs and empties from the top. The extra $870 mainly buys waterline coverage, included pleated filtration, a cable swivel, app controls, and one more warranty year. It also buys a robot that is 13 pounds heavier.

My default pick is the Cayman if brushing the waterline by hand is acceptable. The Clear earns its price only for an in-ground owner who will use its added coverage and controls often enough to justify the lift and expense.

I reached that view after more than a month with the Cayman and three months of near-daily Clear use. I did not run them in the same pool for a timed test: the Cayman worked in a neglected above-ground pool, while the Clear worked in my in-ground pool. Direct observations below are labeled as such; listed numbers come from the manufacturers.

What Changes for $870

Flow numbers are not cleaning scores. They do not account for filter condition, brush contact, debris size, route, or the pool finish. I saw both collect difficult material, but I would not call one twice the floor cleaner because its published GPH is about twice as high.

First $870 Question: Will You Brush the Waterline?

My Cayman climbed from the floor to the top of the wall many times. Its front end broke the surface, then the robot dropped back and continued cleaning elsewhere. That was useful wall coverage during an algae cleanup.

It was not waterline cleaning. The Cayman did not turn and move along the border where oils, pollen, and residue collect. Maytronics' current U.S. specifications make the same distinction: floor and walls are listed; waterline scrubbing is not.

The Clear reached and scrubbed the tile line in my in-ground pool. Clear says its twin-pump flow helps support its cleaning system, but I did not isolate pump flow as the cause. I can support the observed result: the Clear spent cleaning time at the waterline and the Cayman did not.

This distinction is easy to overstate. A rated waterline robot may still miss sections because of wall shape, returns, ladders, curves, or cable position. The Clear also missed my shallow stairs and sun shelf on some cycles. I still keep a brush nearby.

If the tile band takes a minute or two to brush and you already do it during water testing, save the $870. If a long, curved waterline develops a ring you regularly neglect, the Clear removes a recurring chore the Cayman was not built to handle.

Second Question: What Do You Want to Rinse?

Both robots open from the top. This matters because neither requires turning a wet chassis over to reach the debris.

The Cayman's standard MaxBin worked well with algae clumps, leaves, and ordinary dirt. A bottom flap makes it easy to dump. Standard panels rinse quickly, which is useful when a dirty pool fills the basket every cycle.

For the fine powder left by dead algae, I fitted optional pleated panels. They captured material that passed through the standard media, though two panels took some initial assembly and every pleat added rinsing time. Price the Cayman with that accessory if fine silt or pollen is your normal problem.

The Clear includes pleated panels. Its manual rates the fine media at 1 micron and the coarse media at 180 microns. I did not verify those pore sizes in a lab. I did see fine dust held in the folds and less of it resettling on my pool floor after a cycle.

The Clear basket also held oak leaves, pine needles, pebbles, and acorns in my use. Mixing large wet debris with fine pleats creates a slower cleanup at the hose. The Cayman gives you a quicker standard filter and lets you pay for pleats later. The Clear assumes fine filtration from the start.

Third Question: Can You Safely Lift 27.6 Pounds?

A comparison that ignores retrieval weight is incomplete.

The Cayman weighs 14.6 pounds dry. It drained quickly as I brought its handle above the water, and its compact body was manageable over an above-ground rail.

The Clear weighs 27.6 pounds before the remaining water adds resistance. Its manual says to lift it by the handle and hold it above the water for 10 to 20 seconds so it can drain. Good footing and a stable deck are required.

Clear provides pickup mode to bring the cleaner toward the wall. That helps with reach, not weight. Do not haul either robot by its cable; guide it close enough to grab the handle.

For an owner with limited grip strength, a shoulder injury, a narrow deck, or an above-ground ladder, the Cayman can be the better purchase even before price enters the calculation. The current pool ratings support the same choice: Maytronics lists the Cayman for above-ground and in-ground use, while Clear lists its UV model for in-ground pools.

Simple Weekly Timer or Detailed App

The Cayman's timer has physical selections for a cycle every day, every other day, or every third day. It runs the chosen schedule for the coming week, then needs to be set again. There is no account, app, remote drive, or backyard network requirement.

I like that arrangement because basket rinsing and timer reset naturally happen together. The limitation is timing: you do not choose a different hour for Tuesday or ask for a floor-only cycle after a storm.

The Clear keeps common controls on its control box and moves detailed scheduling to the app. I can choose days and times, change modes and cycle behavior, steer manually, view status, and call the robot to the wall. Its automatic coverage was good enough that manual driving was rarely useful to me.

The app is the better control system only if you will maintain the connection and use those choices. A Cayman timer does less, but it cannot become obsolete because a phone operating system changes.

Cable Work Does Not Disappear

The Clear has a 59-foot swivel cable. The Cayman has no swivel, and Maytronics' current product page does not publish cable length in the visible specification list. Dealer descriptions differ, so confirm the exact SKU if your pool sits near the 40-foot rating.

Because the Cayman has no swivel, lay its cord straight as needed to remove twist. With either model, use only enough cable to reach the far end, keep the power supply where the manual requires, and store the cord in loose loops out of direct sun. A swivel reduces twist; it does not make cable care optional.

Do Not Assign $870 of Value to the UV Lamp

The Clear's UV-C lamp sits in its internal water path. The company says it disinfects water flowing past the lamp. Clear does not publish the UV dose, irradiance, residence time, third-party certification, or organism-reduction results for the complete robot.

Those missing measurements matter. The presence of a UV-C source does not tell us the delivered dose or its effect on the full pool. Clear's own instructions say to continue normal chlorine or salt sanitation and balanced-water care.

The lamp also adds a handling rule. People must stay out of the pool while UV is enabled, and the function must be off before retrieval or service. I would not pay the price difference for this feature alone. If the lamp is not part of your plan, Clear sells an otherwise related S model without it; compare its current price too.

Warranty and Price

Clear's $1,999 price includes a three-year limited warranty. The company says manufacturing defects in the robot, control box, cable, and UV module are covered; brushes and filter cartridges are wear items. It also ties coverage to authorized purchases and prohibits owner disassembly of sealed components.

Maytronics lists the Cayman at $1,129 with a two-year warranty. Dealer bundles may add pleated filters, a caddy, or a different sale price. Compare authorized status and included parts before treating a lower number as the same package.

The Clear warranty is one year longer, but my use cannot establish that the machine lasts longer. My Clear source review covered three months. My Cayman source review covered more than a month. Warranty length is a contract term, not durability evidence.

The Work Both Leave Behind

Neither model replaces:

• brushing steps, benches, shelves, tight corners, and missed strips;
• skimming floating debris before it sinks;
• cleaning the robot's filter before flow is restricted;
• checking the brush and intake for hair or string;
• maintaining circulation and the main pool filter; or
• testing and balancing the water.

Neither one cures an algae bloom. During my Cayman cleanup, chemistry killed the algae and the robot removed what settled. The same division of labor applies to the Clear.

Who Should Pass on Both

If you have a small above-ground pool and only need the floor cleaned, a Cayman may already be more machine than necessary; the Dolphin Escape does that narrower job for less.

If you have an in-ground pool but want app control without lifting 27.6 pounds, compare lighter connected models. If you need dependable shelf or step cleaning, neither robot addresses the hard part. And if you cannot route a cord from a safe GFCI-protected power source, neither is suitable.

My Decision

Buy the Dolphin Cayman if you want scheduled floor-and-wall cleaning, can brush the waterline yourself, and value a low retrieval weight. At the October 1 prices, it keeps $870 in your pocket while covering the surfaces that collect most settled debris.

Buy the Clear UV if you have an in-ground pool, waterline buildup is a recurring problem, and you will use the app's schedule and modes. Its included pleated filtration, swivel, and extra warranty year add value, but the lamp's pool-wide contribution remains unquantified.

The exact trade is simple: with the Cayman, you carry 13 fewer pounds and keep brushing the waterline. With the Clear, you pay $870 more and ask the robot to take that line off your weekly list.