I usually time my brew with a simple kitchen timer. Today I decided to try the timers on my iBrewMaster app on my phone. I setup the batch and the timings. Come to find out, when the phone sleeps the timers stop. I checked it by setting the kitchen timer and starting both. When the kitchen timer went off I checked the app and it hadn't moved. I didn't pause the timer and I know it was running. So today I can just built to quantity and then 15 more for my hop additions. I am pissed!