That's just risk/benefit to the user. As the developer, I'd be concerned that publicly distributing and marketing this, even with a GPL "no warranty" license and even free to the user, is illegal.
You can distribute the source code for research purposes legally at least here in Germany. That's how AndroidAPS is even possible.
You can distribute the source code for research purposes legally at least here in Germany. That's how AndroidAPS is even possible.