Dolphin Proteus DX4 Plus Robotic Pool Cleaner with PowerStream Mobility

Our take

The Dolphin Proteus DX4 Plus Robotic Pool Cleaner with PowerStream Mobility is a corded robotic pool cleaner from Maytronics Dolphin. It cleans the floor, walls and waterline, navigates in a systematic pattern rather than at random, using Precision Scanning Software, and has no app. Its cable is 40 ft long.

On paper it scores 6.8 out of 10 (fair) against other robotic cleaners. Its strongest areas are cleaning coverage (9.0) and runtime (8.5). Where it gives ground: app & connectivity (2.0) and filtration (4.5). Corded: the floating cable can tangle and needs the occasional untwist.

The best price we found is $899 at Leslie's. The typical robotic cleaner we track costs $899, so this one is about average. For what it does, its value score is 4.4 out of 10.

If you want mapping navigation, the cheapest we track with it is the Dreame Z1 Cordless Robotic Pool Cleaner at $349.99.

If you want a Wi-Fi app, the cheapest we track with it is the Dreame Z1 Pro Cordless Robotic Pool Cleaner at $399.99.

To spend less for nearly the same spec score, the WYBOT C2 Cordless Robotic Pool Cleaner (2026 Upgrade) rates 8.4 for $429.

For about the same money, the Beatbot AquaSense 2 Robotic Pool Cleaner scores higher (9.0) at $799.

Bottom line: a fair robotic cleaner on paper.