@djh A bit of context: Killing the app doesn't mean the insulin pump will stop working, it will just revert to its default behavior (so the same as it was doing without AndroidAPS). A lot of people (like myself) resort to open-source solutions like this because manufacturers give us very little control over our own medical devices, so sure, ideally this wouldn't be running on a smartphone, but the official proprietary solutions (if there even is one available for you depending on insurance/country/whatever) are behind what we get with open-source solutions right now. The improvement in quality of life is incredibly noticeable, a lot of people are suffering with burnout, the tech is here and we're not going to wait years for some shitty proprietary solution to be available.