
ICO Pool
From $449
Both monitors avoid subscriptions and test cassettes. The split is hardware: iopool costs less and can report more often, while ICO connects straight to Wi-Fi, recharges over USB and measures salinity on its Salt model.
ICO removes the powered gateway, recharges over USB and measures salt / TDS on the Salt model.

From $449

$359 Start + cOnnect; $409 Salt + cOnnect
These are the ownership differences that matter after the unboxing, not a list of every marketing feature.
| Category | ICO Pool Our pick | iopool EcO V2 + cOnnect |
|---|---|---|
| Typical purchase price | $449 Chlorine / Bromine · $499 Salt | $359 Start + cOnnect; $409 Salt + cOnnect |
| Automatic reading schedule | Every hour — 24 readings per day | Up to every 15 minutes while the cOnnect gateway is online |
| What it measures | pH, ORP and temperature; ICO Salt also reports salt / TDS | pH, ORP and temperature; the Salt version is compatible with salt pools but does not report salinity |
| Subscription / refills | No app fee, test cassette or reagent refill | No subscription or per-test consumable |
| Connection | Direct 2.4 GHz Wi-Fi plus Bluetooth; no gateway | Bluetooth probe; remote access runs through a plug-in Wi-Fi gateway |
| Power | USB-rechargeable battery; rated for 6+ months per charge | Replaceable monitor battery, typically 2–3 years; gateway stays plugged in |
| Sensors and service parts | pH, ORP and TDS probes replace individually; Smart Core is also replaceable | Combined sensor kits and V2 battery kits are sold |
| Warranty | 1-year limited manufacturer warranty | 2 years, subject to support evaluation |
| Where it goes | Floats in the pool or sits in the skimmer | Floats in the pool; gateway needs protected power within range |
| Overall winner | ICO Pool ICO removes the powered gateway, recharges over USB and measures salt / TDS on the Salt model. | Not our overall pick Its strongest use case is covered honestly below. |
iopool's corresponding bundles start about $90 below ICO. Neither product charges for its app or burns through a test cassette, so there is no hidden subscription comparison to make.
The trade is installation. EcO is a Bluetooth probe. Remote data depends on the cOnnect gateway staying powered where it can hear the probe and reach home Wi-Fi. ICO puts Wi-Fi in the monitor itself.
With cOnnect online, iopool advertises measurements as often as every 15 minutes. ICO uses a fixed one-hour schedule. If raw sampling frequency is your top priority, iopool has the advantage.
ICO's advantage is predictability: there is no gateway outage to separate the probe from the cloud, and the rechargeable battery has a published 6+ month interval.
The EcO Salt package is built for a salt-treated pool, but its probe still reports pH, ORP and temperature rather than the salt level. ICO Salt adds a conductivity probe and reports salt / TDS in the app.
Both brands offer replacement hardware. iopool replaces the sensing assembly as a kit; ICO lets the owner replace pH, ORP and TDS probes separately.
Our pick is ICO because direct Wi-Fi removes the fussiest piece of the iopool system, and ICO Salt actually reports salinity. iopool remains a credible lower-cost choice, especially where a sheltered outlet already sits close to the pool.
Choose ICO for direct Wi-Fi, a rechargeable battery, individually replaceable probes and actual salt / TDS readings on the Salt version.
Choose iopool to spend less up front, get the longer two-year warranty and receive more frequent updates when its gateway has a reliable connection.
ICO Pool is our overall winner. ICO removes the powered gateway, recharges over USB and measures salt / TDS on the Salt model.
For remote access, yes. The EcO probe uses Bluetooth and the powered cOnnect gateway relays its data to Wi-Fi. Nearby Bluetooth use does not need the gateway.
No. Its Salt model is designed for saltwater pools but does not report salinity. ICO Salt measures conductivity-derived salt and TDS.
Yes. The comparable iopool bundles start about $90 lower. ICO's premium buys direct Wi-Fi, USB recharging, individual probes and salt measurement on ICO Salt.










Last fact-checked November 5, 2026 from manufacturer product pages, manuals and support material. This is an editorial feature comparison, not an independent laboratory accuracy test. Prices, stock and terms can change; make sure the exact model before ordering.