Best Robotic Pool Skimmers: Betta vs. Dolphin vs. Beatbot

Published September 27, 2026 · Updated September 27, 2026

A robotic pool cleaner scrubs the floor. A robotic skimmer patrols the surface. Most pool owners have never heard of the second category, and for heavy-debris pools it’s arguably the higher-leverage purchase: a leaf that never sinks never stains the floor, never clogs the main drain, and never becomes the sludge your floor cleaner has to grind through.

The category is small — three serious players — which makes this the rare comparison you can hold entirely in your head.

As always here: research-based from published specs and owner-feedback patterns. We have not hands-on tested these skimmers. See our methodology.

First: do you need one at all?

Buy a robotic skimmer if any of these are true:

• Overhanging trees. If you’re emptying the wall skimmer basket more than twice a week in season, a robotic skimmer pays for itself in time.
• Pollen or fine surface debris. Floor cleaners don’t do much about the film on the water’s surface; skimmers do.
• You already own a floor cleaner and it can’t keep up. Adding a ~$370 skimmer is cheaper than upgrading a $700 robot to a $1,200 one, and it usually solves the problem better, because the two devices split the work by zone.

Skip it if your pool is screened, treeless, and your debris load is light. The floor cleaner alone is enough — see the decision framework.

The three contenders

Betta SE (~$370)

Betta is the category’s original specialist — a company that makes essentially one thing: solar-powered robotic surface skimmers. The SE is the current mainstream model. It runs on solar with a battery backup, so it patrols during the day without charging or a power cord, and its large debris basket is easy to empty.

The honest assessment from owner-feedback patterns: Betta’s single-product focus shows in the details — shallow-water handling, obstacle avoidance around ladders and steps, and a basket that’s genuinely sized for leaves rather than an afterthought. The tradeoff is that it’s a small company; app support and long-term parts availability carry more uncertainty than buying from a giant like Maytronics. For a ~$370 purchase, most owners seem to consider that an acceptable bet.

Betta links in this site point to Amazon (via our /go/betta/ redirect) since we found no public direct affiliate program for the brand.

Dolphin Skimmi 300 / 200 (the Skimmi line, post-July 2026)

Important context: the original Dolphin Skimmi was discontinued in July 2026. Maytronics replaced it with the Skimmi 300 and Skimmi 200 — a tiered lineup rather than a single model. If you’re reading older reviews of “the Dolphin Skimmi,” they describe a discontinued product; the 300/200 are the current equivalents.

The Skimmi models are the skimmer counterpart to Dolphin’s floor-cleaner lineup: backed by Maytronics’ dealer and service network, which matters if you value being able to get parts and service five years from now. The 300 is the fuller-featured model; the 200 is the value tier. Published specs position them as direct Betta competitors — solar-assisted operation, app control on the higher tier.

The tradeoff versus Betta: you’re paying partly for the Maytronics name and service network, and the per-dollar skimming performance in owner feedback doesn’t clearly exceed Betta’s. But “the company will still exist and answer the phone” is a real feature for a device that lives in your pool year-round.

We found no public affiliate program for Maytronics — links go to the manufacturer via /go/dolphin/. See our affiliate disclosure.

Beatbot (AquaSense line with surface modes)

Beatbot’s AquaSense 2 Ultra (~$2,299 list) includes surface-skimming modes, which puts it in this comparison sideways: it’s a floor cleaner that also skims, not a dedicated skimmer. For owners buying the Ultra anyway, the skimming mode is a genuine bonus — it means one device covering both zones.

But it doesn’t replace a dedicated skimmer for heavy-debris pools. The Ultra skims in scheduled modes; a Betta or Skimmi patrols continuously on solar all day. If surface debris is your main problem, the dedicated solar skimmer running all day beats the premium floor cleaner that skims for part of its cycle. If you’re buying the Ultra for its floor-cleaning performance anyway, treat the skimming as a free extra, not a reason to skip the decision.

Beatbot’s direct affiliate program is published at ~8% (program terms, subject to change — see our affiliate disclosure) — disclosed here because we link to them via /go/beatbot/. It doesn’t change the ranking: buy the Ultra for its cleaning, not its skimming.

Head to head

How solar skimmers actually work

A robotic skimmer is simpler than a floor cleaner: a floating hull, a debris basket with a weir or intake, a small propeller or water-jet drive, and a solar panel charging an onboard battery. It putters around the surface all day, funneling floating debris into its basket. No cord, no charging dock ritual — the sun is the charger, and the battery covers cloudy stretches.

The engineering constraints are obvious once you think about them: it has to be light enough to float high (so the intake skims the surface film), heavy enough not to flip in wind, and smart enough to avoid getting stuck behind ladders, steps, and pool toys. Obstacle handling is where the good ones separate from the cheap ones — a skimmer that beaches itself on the steps every afternoon is a chore, not a solution. This is the spec sheet’s blind spot: no manufacturer publishes “gets stuck” rates, so this is exactly where patterns in owner feedback matter most.

What to look for

• Basket size and access. You’ll empty it often in leaf season. Top-access baskets you can dump one-handed beat fiddly latches.
• Solar panel size vs. battery. Bigger panel = more runtime on cloudy days. If your pool is shaded, solar skimmers underperform — they’re sun-powered, and shade is the enemy. A heavily shaded pool is the one case where a skimmer’s value drops sharply.
• Shallow-water and obstacle behavior. Steps, benches, ladders, attached spas — the skimmer needs to navigate or at least unstick itself from all of them.
• App vs. no app. Some skimmers have apps with scheduling and find-my-skimmer; others are fully autonomous with no app at all. For a device whose job is “wander around all day,” the app is a nice-to-have, not a need — don’t pay much for it.

Maintenance and winterization

Maintenance is minimal: empty the basket, rinse the filter mesh occasionally, wipe the solar panel clean (a dirty panel measurably reduces charging). Winterization depends on climate — in freeze regions, bring it inside for winter like any pool equipment; the battery in particular doesn’t like hard freezes. In year-round pool climates, it just keeps working.

Expected lifespan is the open question for the category: these are relatively new products, and 5-year longevity data barely exists yet. Budget mentally for 3–5 years, and treat anything beyond that as a bonus.

The pairing math: skimmer + cleaner vs. better cleaner

Put numbers on the combination play. A mid-range corded cleaner ($699) plus a Betta SE ($370) is ~$1,070 — roughly the price of one premium floor cleaner. What you get: continuous surface patrol (the skimmer, all day on solar) plus thorough floor/wall cleaning (the corded robot, on demand). What the single premium cleaner gives you: better floor cleaning, but surface debris still sinks between runs and packs the filter.

For heavy-debris pools, the pair wins on outcomes. For light-debris pools, it’s overkill — the cleaner alone is enough, and the $370 stays in your pocket.

The decision

• Heavy debris, budget-conscious: Betta SE. It’s the most skimming per dollar in the category.
• Heavy debris, risk-averse: Dolphin Skimmi 300 (or 200 if the price gap is large). You’re buying Maytronics’ service network.
• Buying a premium floor cleaner anyway: Beatbot AquaSense 2 Ultra’s skim mode is a bonus — but if surface debris is the main problem, still get the dedicated skimmer.
• Light debris: Skip the category entirely and put the money toward a better floor cleaner or a chemical monitor.

And the combination play worth repeating: for a heavy-debris in-ground pool, a mid-range corded floor cleaner plus a Betta SE (~$370) routinely outperforms a single flagship robot costing twice as much — because the skimmer keeps the floor cleaner’s filter from packing full of leaves mid-cycle.

Disclosure: product links on this page may earn us a commission at no cost to you. See our affiliate disclosure. Prices shown are approximate published prices as of September 2026.