Yes, speech input. Menus and text inputs work, but can't I just say, "Glucose is now at 105." "I took 5 units of [insulin type] at 5pm." "Eating half of a green pepper." "2 eggs." Old people and diabetics tend to have blurry eyes, and if you can't interact with the app without glasses, then it becomes kind of useless.

Some people like the MySugr app. It's sort of gamified. I'm looking at it again now, but it was a bit too complicated for me the first time I tried it. Plus, I can barely read it.

Diabetes care is a process of daily maintenance and it is mostly about Food, Medication, Exercise & Timing.

Food is a challenge because people eat different things each day, eat different amounts of food, and some dishes contain a mixture of foods. However, people tend to eat the same things over and over. So, once it's set up for frequent foods, it might be easier to get used to.

There's so many different types of foods, that creating a pre-filled database of foods might be daunting. Is she eating a raw, simple ingredient measured by cup, ounce or palm-full; or is it a pre-packaged, processed frozen dinner with a nutrition label and scanable bar code, etc? Just too much to start with, ... so the first place to begin learning would be for you to keep a written food diary for a few days to see what it's like.

Food breaks down to carbohydrates, fat and protein. Each of these affects the way food is processed. Carbs are the most important factor since they are quickly converted to to glucose. This glucose floods the bloodstream and causes glycosylated hemoglobin (hence the A1C test result). So, carb-counting is important to many diabetics, because they want to minimize the amount of glucose, and depending on Type and condition, they may have to administer insulin to cover the carbs at the appropriate time.

Not sure what solution you'd like to create for you mom, but an easy-to-use tracking app would be nice. What about food is the difficult part for her? She doesn't know what to eat, or what's in it, or how it affects her glucose? Again, start with your own food diary, and you'll quickly see some of the challenges -- diabetic or not.