I'm unfamiliar with the Bant app specifically, but we do have the ability to monitor blood glucose continuously, as well as intermittently, through the checking.
One big thing is letting the patients know when their blood sugars are too low. Sometimes they feel it and sometimes they don't, so having safety alerts to trigger when they're too high or too low.
A lot of times when you have a chronic disease, you feel like you're struggling with it alone with no feedback. Providing feedback to people, allowing them to set goals.... Then having the human touch on the other end is important as well, like connecting with nursing staff or physicians to help improve their self-efficacy.