Thanks, Tony. I appreciate the report and the picture. I guess I was just surprised about the WAPP because I had a tankless for two years (before I sold my house) and I only adjusted it once in that two years. I changed the temp from 120 to 130 at the control panel. I can see a car door app being useful since you unlock and lock your car daily, but a water heater adjustment app seems like it wouldn't be used often. Having said that, if it includes status reporting to you and also reports required maintenance to whomever maintains it, I guess that could be useful.
Still Long WDRP!!!
"Facts do not cease to exist because they are ignored." - Aldous Huxley (1894-1963)