I'm currently a student and am designing a smartphone app which is supposed to help Type-1 sufferers control their diabetes. I've done some research into existing apps already and while there are a few which seem useful, a lot of them are fairly poor quality. I want to make sure that my design is as good as it can be so I'd really appreciate if you would fill in a survey I've prepared. Any responses you can give would be really helpful and if you have any extra comments about anything then please do reply to my post.