I managed to find this, sounds interesting that device in your pool would be able to test and report FC, pH, Salt and temp. Appears it's not available in the US. Anyone seen anything similar for US?
Home - Ondilo
YouTube video: ICO - My smart pool partner - YouTube
Description
I am ICO – your smart pool partner. I analyze, anticipate and control in order to guide you through pool maintenance.
You are now connected to your pool, 24/7, via my application on your smartphone or tablet.
Can’t wait to swim: Drop me in the water and I instantly start to analyse your pool.
I like all types of pools: chlorine, bromine and salt-water chlorination
I work continuously: 24/7, always at your service, you can even let me float in the skimmer or under the cover.
I am small but robust: My custom robust sensors are protected by a rigid shell, specially designed to last several years. My battery only requires to be recharged once a season, as simple as with a phone (via USB cable).
Home - Ondilo
YouTube video: ICO - My smart pool partner - YouTube