Pool computer is Pool/Spa Water Chemistry Android application.Dertermine for you the required water treatment to adjust your pool or spa water properly.1/ Reporting the reading from your test kituse the sliders to report your PH reading, your free chlorine (CL) reading, total Alckalinity, Stabilizer and water temperatureuse the checkbox if your water has gone green or cloudy (need a superchlorination) 2/ Using the suggested adjustmentsPH target: 7.4PH ok between 7.2 and 7.6 (do not need adjustment)if PH < 7.0 or PH 7.8 then no chlorine adjustment will be suggested since you need to adjust the pH first. The retest a few hours later.Free chlorine target:1.5 ppm (mg/liter) for usual pool sanitizatioon10 ppm for a shock chlorinationSave the measured values toi a log file Display this log on the application—————————————–The pro version is adfree !The csv file of the pro version is compatible with Excel(The csv file is encrypted in the free version)