I'm very happy with this purchase. The thermometer is accurate, the app is very nice. I can check my pool temps from anywhere around my property. It's nice to not have to go to the pool to see if it has warmed up for the day. It's nice to know what the temp is. This reads to 2 decimal places and the readings coincide with my regular thermometer and my heater display.
This is a good deal for the price as well. I'm happy with this purchase and would recommend this item for those who want quick access to temps for a pool, spa, outdoor fish pond etc. It's a nice addition to my pool.