The catch
WYBOT C2
Simple floor-only cordless models weigh less than its 17.6 pounds dry.
Side by side
WYBOT C2 vs Dolphin Advantage Ultra: No pool cable with C2, no waiting on a battery recharge with Ultra
Quick verdict
With the C2 you get cordless operation, app modes and fine secondary media. Advantage Ultra draws power from the deck and can start another session without waiting on a battery recharge.
Before you buy
Why, and what it costs you
Weight gives only a modest advantage
Dry, C2 weighs about 0.9 pound less.
Where this comes from
Subtract 17.6 from 18.478 to get 0.878 pound, which is about 4.8 percent of Ultra weight.
The catch
Dolphin Advantage Ultra
App and remote steering are both absent.
WYBOT C2
- Why pick it
- You would rather keep a cleaning cable out of the water.
- App-selected modes and 10-micron secondary media appeal to you.
- The catch
- Simple floor-only cordless models weigh less than its 17.6 pounds dry.
Dolphin Advantage Ultra
- Why pick it
- You expect to run cleaning sessions again and again with no recharge downtime.
- Local controls and a powered two-hour cycle are your preference.
- The catch
- App and remote steering are both absent.
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What this page compares
WYBOT C2 and Dolphin Advantage Ultra are compared on recharge downtime, filter media, app setup and handling, with their shared full-zone coverage kept in view.
Which one fits
Pick the situations that sound like you
Cable-free cleaning is wanted
The C2 has no cord.
- WYBOT C2
- Better fit
- Dolphin Advantage Ultra
- Caution
Sessions must repeat without charging
Ultra has a cord.
- WYBOT C2
- Caution
- Dolphin Advantage Ultra
- Better fit
App-selected modes are wanted
C2 has an app.
- WYBOT C2
- Better fit
- Dolphin Advantage Ultra
- Caution
Full-zone coverage is needed
Floor, walls and waterline are documented on both.
- WYBOT C2
- Good
- Dolphin Advantage Ultra
- Good
In practice
Differences you will notice
Weight gives only a modest advantage
Dry, C2 weighs about 0.9 pound less.
How we worked this out
Subtract 17.6 from 18.478 to get 0.878 pound, which is about 4.8 percent of Ultra weight.
Running C2 fully and then recharging it can take up six hours
Both the maximum run and the listed charge come to about three hours each.
How we worked this out
Add 180 minutes of runtime to 180 minutes of charging and you get 360 minutes. Treat it as a scheduling illustration and not a promised duty cycle.
The waterline is already within the named scope of both
How you power and maintain it counts for more than the zone names.
How we worked this out
Floor, wall and waterline cleaning is documented for both. Weigh cable handling, recharging, app controls and filter care against each other.
Option A
WYBOT, 2026 Upgrade
C2
This is the widest-ranging WYBOT on the list, with a three-hour battery, seven modes and a 10-micron secondary filter.
- Best for
- Cordless cleaning of a large pool where both fine debris and flexible modes count
Facts we checked
- WYBOT's ratings are 2,152 square feet and up to 180 minutes.
- There are seven modes, covering floor, walls and waterline.
- Flow is 3,592 GPH, and the filter stack combines 180-micron and 10-micron media.
Option B
Dolphin, 99996201-ADU
Advantage Ultra
This corded cleaner covers every zone, waterline scrubbing included, in a fairly manageable 18.5-pound body.
- Best for
- Anyone who wants a Dolphin that cleans the waterline and skips app setup
Facts we checked
- Maytronics' rating covers pools up to 50 feet.
- Floor, walls and waterline are all covered in the two-hour cycle.
- Flow is 4,000 GPH, the cable swivels and the weight is 18.478 pounds.
Spec by spec
Where they really differ
| Spec | WYBOT C2 | Dolphin Advantage Ultra | In practice |
|---|---|---|---|
| Power | Cordless battery | Corded power supply | No cable on C2, and no waiting for battery recharges on Ultra. |
| Session timing | Up to 180 minutes, about three-hour charging | Two-hour default cycle | Battery runtime at its maximum is not the same measure as a preset cycle's duration. |
| Filter | 180-micron plus 10-micron secondary media | Fine filter kit without a matched micron figure here | C2's finer stage is quantified, yet that does not set an exact capture ranking. |
| Control | App and seven modes | No app, weekly timer | Modes can be picked from a phone on C2. |
| Dry weight | 17.6 pounds | 18.478 pounds | Published dry weights differ by less than one pound. |
Trade-offs
What each pick costs you
With WYBOT C2
- Long cycles are followed by downtime while the battery charges.
With Dolphin Advantage Ultra
- Compared with the Supreme, the standard two-hour cycle gives you less to adjust.
Change of plan
When the answer changes
You want app control on a corded unit
Neither model fits. MyDolphin Plus is the addition Advantage Pro makes to a full-zone corded platform.
Decision guide
How to decide
Pick C2 for cordless operation, app modes and fine secondary media. Pick Advantage Ultra if you want deck-side power and the ability to start another session without a battery recharge wait.
If storms mean frequent cleanups
A corded cleaner can start another supported cycle without waiting for a battery to refill. You still have to empty and rinse the filter, remove large debris by hand where required and stay within operating limits. The C2 is more convenient when a single charged session usually covers the routine.
If the pool deck is crowded
The C2 takes the cleaning cable out of the water, yet charging and storage still need a suitable dry spot. The Ultra's power supply needs safe placement and cable management. Go with the setup you can deploy consistently without creating a troublesome path around the pool.
If the material is very fine
The C2 comes with a 10-micron secondary layer. The Ultra's fine-filter name alone is not a matched micron specification, so this page does not invent a capture ratio. For the offer you are considering, confirm the exact included filter and the replacements available.
What this page can’t tell you
- The flow, runtime and coverage figures come from the manufacturer and are not matched, independent pool-cleaning tests.
- How well a robot climbs walls, handles steps and cleans the waterline depends on pool geometry and surface conditions. Having an app does not mean you get live underwater radio control.
By the numbers
What the data shows
What we found across the robot pool cleaners we compare, plus the checked facts behind each finding.
How many fit
None of the 27 models checked meets all of “No cable should run across my pool”, “I would rather have corded power than a battery deadline”, “I want an app for controls and status”, and “My pool collects fine dust, sand or dead algae”, so the pick goes to the closest practical compromise.
0 models fit, out of 27 checkedThe gap in numbers
WYBOT C2 lists 180 min for listed full cleaning cycle, 50% more than the 120 min on Dolphin Advantage Ultra.
- WYBOT C2
- 180 min
- Dolphin Advantage Ultra
- 120 min
- Models with this figure
- 13 of 27
Show the facts and the math
How we countedThe count uses each product's current fit ratings for “No cable should run across my pool”, “I would rather have corded power than a battery deadline”, “I want an app for controls and status”, and “My pool collects fine dust, sand or dead algae”. A need with no documented match is not counted.
How we calculatedCycles listed in hours are shown in minutes. Optional quick modes and unlimited corded running are left out. For context, 13 of 27 models publish comparable figures.
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| WYBOT C2 |
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| |
| Dolphin Advantage Ultra |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
WYBOT C2
You would rather keep a cleaning cable out of the water.
See price & reviews on AmazonDolphin Advantage Ultra
You expect to run cleaning sessions again and again with no recharge downtime.
See price & reviews on AmazonEach link opens in a new tab.
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