I have had type 1 diabetes for more than 30 years, which I manage using a glucose monitor connected to an insulin pump. About every five years, I would get upgraded pumps and sensors that were approved by the Food and Drug Administration and covered by my insurance. Still, my glucose control slowly deteriorated.
One day, my physician encouraged me to explore new, open-source software that better manages the sensor and pump system. This new code — written by people who were dissatisfied with the existing, FDA-regulated app — is a revelation. It fine-tunes my insulin delivery in a manner no FDA-approved systems could. I am now meeting guidelines that had previously eluded me, and I’m feeling great. All of this is free and runs on my iPhone.



