You know your diabetes better than any algorithm.
The problem is memory.
Managing by feel works. But gut feeling sharpens when it's backed by your own experience — not someone else's math. Glysimi remembers what you can't.
iPhone only · iOS 26+ required
Glysimi
now
Had lunch yet? Take 30 seconds to log it.
Glysimi
90m ago
1.5 hours since your last meal. How did it go?
Between obsessive carb counting and trusting your gut — there's a third way
Most experienced T1Ds end up doing the same thing: managing by gut feeling, built up through years of trial and error. It works — most of the time.
The problem with gut feeling isn't that it's wrong. It's that it depends on memory. And memory is unreliable. You can't recall exactly what you had for dinner three nights ago, how much insulin you took, or what your blood sugar did over the next two hours. The same surprises repeat. The same uncertainty lingers.
Glysimi fills this gap. Not a carb counter. Not a doctor's reporting tool. A fast experience journal built for the person who already manages by feel — and wants to do it better.
Why other apps haven't solved this →The moment Glysimi is built for
It's the first tee. Two hours since a low-carb breakfast — bacon and eggs. You know how this plays out: fat and protein absorb slowly, so your blood sugar hasn't climbed much yet. But it will, over the next couple of hours. A full round of golf, on the other hand, tends to push it back down.
Dose now and risk a low on the back nine? Wait an hour? What did you do the last few times you played after a morning like this?
You may not play golf. But you know this moment.
You open Glysimi. Search "golf bacon eggs." Similar days come back — the ones where you played after that kind of breakfast. The full picture: what you ate, when you dosed, what your blood sugar did through the round.
No algorithm can weigh all of this. But your own experience, clearly in front of you, can.
Three moments where it pays off
When you need to know immediately
"When did I last dose? How long ago did I eat?"
Open Glysimi. It's all there — your last entry, your last dose, your last reading. Decisions that used to be guesses become answers in seconds. No scrolling. No trying to remember.
What happened last time?
"What happened last time I was in this situation?"
Search anything: a food, a tag, an activity, a comment. Glysimi returns every similar day from your history — the full context, not just a number. That's how patterns emerge.
The check-in you keep missing
"Wait — it's already been three hours since I ate?"
You didn't skip it on purpose — life just kept moving. Set up the reminders you actually want — after meals, after a correction, after a low — and Glysimi fires them when it matters. Not more often than you want. Just when you said.
If it was important enough to do, it's important enough to spend 30 seconds to capture.
Logging doesn't have to mean tracking everything. It means capturing the moments that matter — when you dose, when you eat, when something feels off. In 30 seconds or less. Without math, without categories, without any of the overhead that made every previous app feel like homework.
Do that consistently, and something changes. The picture becomes visible. The patterns you couldn't consciously identify start to surface. Your gut feeling gets better — not because you studied harder, but because your experience is finally accessible.
There's also something that happens in the moment of logging. When you open Glysimi to record what you just ate — and see the last few hours laid out in front of you — the decision you're about to make gets clearer. Writing forces noticing. People who keep personal diaries report the same thing: putting it into words sharpens the thinking. The thirty seconds you spend logging isn't only a record for later. It's thinking time right now.
This is not a tool for your doctor. It's a tool for you, built around how you actually manage your condition — by feel, by judgment, by the experience you've spent years building.
Built by someone who uses it every day
I've had Type 1 diabetes for over 30 years. I built the first version of Glysimi for myself — because I needed to manage my diabetes faster and smarter than anything available.
I'm not the world's most disciplined T1D. I eat things I know I shouldn't. I skip exercise I know I should do. I make the same trade-offs you make, for the same reasons. Life is about choices — and as long as you accept yours and their consequences, you're doing fine.
But when I finally had a tool that let me see my own patterns, something shifted. I stopped guessing in the dark. I started making decisions with context. And over the years that followed, I achieved results that genuinely surprised my doctors — not because I changed who I am, but because I stopped flying blind.
I'm not sharing this to set a target for you. I'm sharing it because I want you to know what became possible when gut feeling was backed by real experience. Whatever you want from your diabetes management — Glysimi helps you do it with more knowledge, and less uncertainty.
— Bo, founder
Your data is yours
No account. No server. No login. Your health data — insulin doses, glucose readings, meals, notes — never leaves your phone. We don't have access to it. No one does, except you.
Export anytime. Delete anytime. No subscription required to keep what you've already logged.
On-device only
Everything stays on your iPhone. There is no server. Your diary never travels over the internet.
No account required
No username, password, or profile. The app opens directly into your diary. Nothing to sign in to and nothing to forget.
Export anytime
Your data is always yours to take. Export in CSV or JSON at any time, for any reason, including to move to a different app.
In a market where every major app is backed by pharmaceutical companies or data platforms, this isn't the norm. It's a deliberate choice.
Read our privacy policy →Ready to get started?
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