Dolphin Explorer E30
#3 in CordedFull review
A Wi-Fi full-coverage robot for large in-ground pools, priced between the E25 and E40.
Pool Express $1,099$1,099
The Dolphin Explorer E30 is the better robotic pool cleaner overall, rated 3.8 to 3.0. The Dolphin Explorer E30 leads on cleaning. The Polaris P70 wins on value. The Polaris P70 costs $600 less ($499 vs $1,099).
Polaris P70
#35 in CordedFull review
A basic floor cleaner for above-ground and simple flat-bottom pools.
Leslie's $499 Walmart $499$499
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Dolphin Explorer E30 for cleaning (Floor, walls and waterline vs Floor only).
- Choose the Polaris P70 for value ($499 vs $1,099).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every corded robotic pool cleaner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Dolphin Explorer E30 | Polaris P70 |
|---|---|---|
| Overall rating | 3.8/5 | 3.0/5 |
| Value 25% | 36 $1,099 | 70 $499 |
| Cleaning 25% | 85 Floor, walls and waterline | 20 Floor only |
| Navigation 15% | 50 navigation not published (neutral score used) | 50 navigation not published (neutral score used) |
| Warranty 15% | 50 2-year warranty | 50 2-year warranty |
| Pool size 10% | 100 pools up to 50 ft long (about 1,250 sq ft) | 50 pool size not published (neutral score used) |
| Features 10% | 100 2 of 2 | 0 0 of 4; no app control, scheduling, swivel cable, caddy |
Specifications
| Dolphin Explorer E30 | Polaris P70 | |
|---|---|---|
| Pool | ||
| Pool size (rated) | Up to 50 ft long | - |
| Pool types | In-ground | Above-ground |
| Cleaning | ||
| Cleans | Floor, walls and waterline | Floor only |
| Surface skimming | No | No |
| Filter | - | 3 L canister, transparent lid |
| Filter capacity | - | 3 L |
| Power | ||
| Power | Corded | Corded, 40 ft cable |
| Run time | Longest cycle 2 h | - |
| Swivel cable | - | No |
| Navigation & app | ||
| App | Yes | No |
| Connectivity | Wi-Fi | - |
| Scheduling | Yes | No |
| Caddy included | - | No |
| Build | ||
| Warranty | 2 years | 2 years |