Hi, I’m Greg — the founder of Mirri, and someone who still lives with type one diabetes every day.

I was diagnosed a few years ago, and like most people, I was told to count carbs, dose insulin based on my ratios, and keep adjusting. But despite doing everything “right,” I kept running into the same wall: life didn’t follow the textbook.

I’d crash halfway through tennis. Go high an hour after pickleball. Feel fine before eating chicken fingers and fries, only to spiral afterward. I started saying no to milkshakes with friends, skipping games, or stressing before meals I used to love — not because I didn’t want to enjoy them, but because I was afraid of what they would do to my blood sugar. It felt like no matter how careful I was, I was always one step behind.

The problem wasn’t that I wasn’t tracking enough — it was that the tools I had weren’t showing me the right things. Traditional apps focus on carbs. But what I needed was a way to understand insulin sensitivity — how different activities, foods, and situations were affecting how my body responded to insulin in real time.

So I built one.

Mirri started as a personal tool. I wanted to track not just what I ate or how much insulin I gave — but how well that treatment actually worked in the context of real life. That’s where the idea for CarbIn values came in: a number that compares how many carbs I ate to how much insulin I used, adjusted for my own insulin-to-carb ratio.

Soon, I was creating “playbook” entries — saved CarbIn values tied to real-life events like “Tennis at 3 PM,” “Fries and a milkshake,” or “sick day”. These became references I could use to prepare ahead of time instead of reacting afterward. I added timers for insulin dosages and synced CGM data to track trends. Over time, the app became something much more powerful than just a log — it became a way to learn about my diabetes.

Mirri gave me back the ability to live without second-guessing — as confidently as I could before diagnosis. I could finally participate in 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 ever taught — and I believe it can do the same for you.

I built Mirri because I had to, now Mirri is here to help you manage diabetes with confidence, and live life more confidently.