The device works as advertised and the app keeps up with the data well, but there are a couple of improvements needed to match the pHin app. The first one is to accept other brand name chemicals into inventory and use those chemicals when giving the recommendations for treatment. The other one is to be able to edit pool size and pump flow to calculate hours of filtration needed. I put in the wrong info and now it gives me the wrong amount of filtration time. Overall, very pleased. Would recommend the whole system - monitor device, bridge device and app.

Have two of them (one for pool and one for spa). Readings are nowhere close to accurate. I routinely compare to test strips and they are way way off. IOPool units indicate ph is low (one read a ph of 4) when ph is actually HIGH according to two different brands of test strips and multiple strips. Chlorine levels in IOPool are borderline low but both test strips show total and free chlorine levels off the charts high. I’ve been using them for months, calibrated them multiple times with their incredibly overpriced manual test strips (which doesn’t seem to really do anything) and the units are almost never accurate. Oh and the app demands manual analysis with their test strips pretty much constantly - the day after I do a manual test, it wants another, which is convenient when you’re selling overprice test strips. Relying on them is a recipe for messed up chem levels. I’ve had it and tomorrow I call support and demand some type of resolution. I would never recommend this product to anyone. Expensive junk that will rapidly get you into trouble if you trust it.

I also agree that it was nice to inventory a limited amount of other brands, etc.; HOWEVER, I DO love having the IO! The app took getting used to, as far as the “sanitation” part (I like readings of Chlorine…), but this is saving A LOT of money in chemical supplies, just like the pHin.The set-up was MUCH easier than our pHin, that’s for sure! And connecting via our phone is fantastic, in my opinion. I DO work away from home two days/week, so we’ll be investing in the bridge! ❤️

Purchased last year at end of pool season. It showed good promise. This is first full pool season and it working as advertised . I wish I could add my own chemicals into inventory on app or share with my pool maintenance service. I would definitely recommend this over strips or taking water samples to get analyzed.