Keeping an eye on your pool’s chlorine level, PH, and temperature has never been easier. This monitoring system also measures the pool’s water flow. So, if your water level is getting low due to evaporation (for the days you are not in it), you will see an alert in the mobile app after your scheduled measurement is recorded. WaterGuru even provides a postage paid mail-in kit to get a complete chemical reading of your pool that will automatically get loaded into the app. The best part of owning a WaterGuru SENSE is that you will get an actual and accurate chlorine level reading without having to compare color strips, especially for a salt chlorinated pool. There is one thing you should note…. Just like test strips, the cartridges have limit number of test that it can run (about 170 or two months). So, you will have to purchase new cartridges. It’s about $50.00 for a pack of three, but that is more than enough for a summer season. Also with every cartridge purchase you get a couple of free pre-paid mail-in pool testing kits for a complete chemical reading of your pool. With that said, WaterGuru SENSE is still worth the investment.