Main trade-off
Dolphin Nautilus CC Plus with Wi-Fi
Its stated coverage excludes waterline scrubbing.
Head-to-head
Dolphin Nautilus CC Plus Wi-Fi vs Nautilus CC Supreme: Supreme adds waterline scrubbing and about 3.8 lb to lift
The short answer
Choose Nautilus CC Plus Wi-Fi for a pool up to 40 feet when floor and wall cleaning cover your needs. Choose CC Supreme for documented waterline scrubbing or an in-ground pool up to 50 feet. Supreme adds cycle choices but weighs about 3.8 lb more out of the water.
Before you choose
The reasoning and the trade-offs
A 45-foot pool selects Supreme on the stated limit
It is within Supreme's 50-foot range and exceeds Plus Wi-Fi's 40-foot rating. Do not use cable length as a substitute for the maker's pool limit.
What this is based on
40 < 45 ≤ 50. The additional ten feet represents a 25% increase over the Plus pool-length limit.
Main trade-off
Dolphin Nautilus CC Supreme
At 24.63 lb, it is heavier to carry before retained water is considered.
Dolphin Nautilus CC Plus with Wi-Fi
- Choose it for
- Clean floors and walls in an in-ground pool up to 40 feet
- Lift the lighter robot during retrieval
- Main trade-off
- Its stated coverage excludes waterline scrubbing.
Dolphin Nautilus CC Supreme
- Choose it for
- Include documented waterline scrubbing
- Cover up to 50 feet and choose between listed cycle durations
- Main trade-off
- At 24.63 lb, it is heavier to carry before retained water is considered.
About this comparison
Compare Nautilus CC Plus Wi-Fi and CC Supreme for pool length, waterline coverage, cycle options and retrieval weight. Both are corded app-controlled cleaners.
Choose Nautilus CC Plus Wi-Fi for a pool up to 40 feet when floor and wall cleaning cover your needs. Choose CC Supreme for documented waterline scrubbing or an in-ground pool up to 50 feet. Supreme adds cycle choices but weighs about 3.8 lb more out of the water.
Winner by situation
Start with what you need it to do
My in-ground pool is 45 feet long
Only Supreme's stated maximum reaches 45 feet.
- Dolphin Nautilus CC Plus with Wi-Fi
- Not suitable
- Dolphin Nautilus CC Supreme
- Good
I need documented waterline scrubbing
Wall climbing on Plus does not include a waterline-scrub specification.
- Dolphin Nautilus CC Plus with Wi-Fi
- Not suitable
- Dolphin Nautilus CC Supreme
- Good
The dry robot must weigh below 22 lb
Plus lists 20.837 lb. Supreme lists 24.63 lb.
- Dolphin Nautilus CC Plus with Wi-Fi
- Good
- Dolphin Nautilus CC Supreme
- Not suitable
I want weekly app scheduling
Both list weekly scheduling through MyDolphin Plus.
- Dolphin Nautilus CC Plus with Wi-Fi
- Good
- Dolphin Nautilus CC Supreme
- Good
I need a battery-powered robot without a pool cable
Both selected models are corded robots.
- Dolphin Nautilus CC Plus with Wi-Fi
- Not suitable
- Dolphin Nautilus CC Supreme
- Not suitable
What matters in practice
The differences that matter
A 45-foot pool selects Supreme on the stated limit
It is within Supreme's 50-foot range and exceeds Plus Wi-Fi's 40-foot rating. Do not use cable length as a substitute for the maker's pool limit.
How we reached this conclusion
40 < 45 ≤ 50. The additional ten feet represents a 25% increase over the Plus pool-length limit.
Plus removes about 15% of the dry retrieval weight
That helps if carrying the robot is already difficult, though water drainage and where you stand also affect retrieval effort.
How we reached this conclusion
(24.63 - 20.837) / 24.63 × 100 = 15.4%. Difference = 3.793 lb. Dry manufacturer weights only.
The default-cycle gap is 30 minutes, not a cleaning-speed result
Supreme's default is half an hour longer, while its selectable 1.5-hour cycle is shorter. These different programs cannot be treated as equal-workload speed tests.
How we reached this conclusion
2.5 - 2 = 0.5 hours = 30 minutes. Manufacturer technical tables specify different cycle options and coverage.
Choice A
Dolphin, 99996409-PCI
Nautilus CC Plus with Wi-Fi
A connected two-hour cleaner for buyers who want proven wall cleaning and app scheduling.
- Best matched use
- Medium in-ground pools where app control matters but waterline scrubbing does not
Checked facts
- Maximum stated pool length: 40 ft
- Cleaning coverage: Floor and walls
- Cycle settings: 2-hour default in technical table
- Dry robot weight: 20.837 lb
Choice B
Dolphin, 99991083-PC
Nautilus CC Supreme
A three-brush flagship Nautilus that reaches the waterline and offers short or deep app-controlled cycles.
- Best matched use
- 50-foot in-ground pools that need full-line scrubbing and finer filtration
Checked facts
- Maximum stated pool length: 50 ft
- Cleaning coverage: Floor, walls and waterline
- Cycle settings: 1.5 and 2.5 hours, 2.5-hour default
- Dry robot weight: 24.63 lb
Meaningful differences
What changes the fit
| What changes | Dolphin Nautilus CC Plus with Wi-Fi | Dolphin Nautilus CC Supreme | Why it matters |
|---|---|---|---|
| Maximum stated pool length | 40 ft | 50 ft | Supreme extends the listed pool-length range by ten feet. |
| Cleaning coverage | Floor and walls | Floor, walls and waterline | Waterline scrubbing is a specific additional task, not an inference from wall climbing. |
| Cycle settings | 2-hour default in technical table | 1.5 and 2.5 hours, 2.5-hour default | A selectable shorter cycle does not mean the same cleaning job finishes sooner. |
| Dry robot weight | 20.837 lb | 24.63 lb | Supreme adds approximately 3.8 lb before retrieval water is considered. |
| Brush system | Two brushes, no active brush listed | Three brushes with active brushing | The hardware differs, but brush count alone does not measure debris pickup. |
| Delay setting | No delay feature listed | Delay feature listed | Both have weekly scheduling and MyDolphin Plus. Delayed start is the additional Supreme control. |
What you give up
Every choice has a cost
If you choose Dolphin Nautilus CC Plus with Wi-Fi
- The 40-foot pool limit excludes longer pools even though it has a swivel cable.
If you choose Dolphin Nautilus CC Supreme
- Its 2.5-hour default cycle is longer than the Plus technical table's two-hour default.
Recommendation switch
The decision flips if...
My pool is above 40 and no more than 50 feet long
Choose Dolphin Nautilus CC Supreme. Supreme's stated length range covers it.
I need only floor and wall coverage and a dry weight below 22 lb
Choose Dolphin Nautilus CC Plus with Wi-Fi. Plus Wi-Fi meets both conditions.
I require cordless operation
Choose neither. Both robots use a power cable.
What matters in practice
How to make the call
Use pool length and waterline work as hard filters
A 45-foot pool or a firm waterline-scrubbing requirement makes Supreme the suitable member of this pair by specification. For a smaller pool where you will handle the waterline separately, Plus Wi-Fi covers the stated floor-and-wall role without carrying the heavier robot.
Think through retrieval before ordering
Weight matters most at the point you lift the machine out and carry it away. The published numbers are dry weights, and retained water can make a lift feel different. Follow the maker's retrieval instructions, allow drainage and avoid treating the cable as a carrying handle.
Do not infer performance from cycle or pump numbers
The makers list the same nominal suction rate for these two models, yet their coverage and brush systems differ. That does not establish identical pickup or a Supreme advantage in every pool. Steps, unusual ledges, surface traction and debris types need their own compatibility checks.
What this comparison cannot tell you
- No pool, waterline, filtration or retrieval test was performed. Plus Wi-Fi's marketing text conflicts with its technical table on cycle time, so the two-hour table value is explicitly identified.
What the facts say
What the comparison shows
Useful conclusions from the current robot pool cleaners comparison, followed by the checked facts used to reach them.
See the checked facts and calculation notes
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Dolphin Nautilus CC Plus with Wi-Fi |
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| Dolphin Nautilus CC Supreme |
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Ready to choose?
Check the price. Read the owner reviews.
Open either model on Amazon to check the current price, customer reviews and delivery options.
Dolphin Nautilus CC Plus with Wi-Fi
Clean floors and walls in an in-ground pool up to 40 feet
See price & reviews on AmazonDolphin Nautilus CC Supreme
Include documented waterline scrubbing
See price & reviews on AmazonLinks open in a new tab.