Hi, I’m Greg — the founder of Mirri, and someone living with type 1 diabetes as you read this.
I was diagnosed a few years ago, and like most people I was told to count carbs, dose insulin by my ratios, and keep adjusting. But even doing everything “right,” I kept hitting the same wall: life didn’t follow the textbook.
I’d crash halfway through tennis. Go high an hour after pickleball. Feel fine before chicken fingers and fries, then spiral afterward. I started saying no to milkshakes with friends, skipping games, and stressing before meals I used to love — not because I didn’t want them, but because I was afraid of what they’d do to my blood sugar. No matter how careful I was, I was always one step behind.
The problem wasn’t that I wasn’t tracking enough. The tools I had weren’t showing me the right things. Traditional apps focus on carbs; what I needed was a way to understand insulin sensitivity — how different activities, foods and situations were changing how my body responded to insulin.
So I built one.
Mirri started as a personal tool. I wanted to track not just what I ate or the insulin I took, but how well that treatment actually worked in real life. That’s where CarbIn came from: a number that compares the carbs I ate with the insulin I used, adjusted for my own insulin-to-carb ratio.
Soon I was saving “playbook” entries — CarbIn values tied to real moments like “Tennis at 3 PM,” “Fries and a milkshake” or “Sick day.” They became references I could use to prepare ahead instead of reacting afterward. I added timers for insulin doses and synced my CGM to see trends. Over time the app became much more than a log: it became a way to learn my diabetes.
Mirri gave me back the ability to live without second-guessing, as confidently as before my diagnosis. I could finally do the things I love without blood sugar management being a constant weight on my shoulders.
Now, after years of using and refining it, I’m sharing Mirri with others. It’s helped me understand my diabetes faster and more deeply than anything I was taught, and I believe it can do the same for you.
I built Mirri because I had to. Now it’s here to help you manage diabetes, and live your life, with more confidence.