Gut feeling is the right approach.
Here's how to make it better.
A fast experience journal for T1Ds who already manage by feel — and want to do it better. No carb counting. No formulas. Just your own history, instantly searchable.
Most diabetes advice is built around the idea that the right formula makes management easier. Count the carbs. Calculate the dose. Follow the ratio.
The problem is: diabetes doesn't behave like math. Absorption varies. Activity affects insulin sensitivity for hours. Stress, sleep, what you ate before — all of it shifts the numbers in ways no formula can capture. Experienced T1Ds already know this. That's why most of them have stopped counting and started trusting their gut instead.
Gut feeling works. The problem is that it depends on memory. And memory is unreliable.
Glysimi fills this gap. A fast experience journal built for the person who already manages by feel — and wants to do it better.
Why other apps didn't stick
The carb counting app asks you to weigh and measure everything on your plate. In theory, it calculates your dose from the math. In practice, it's enormous work for a model that doesn't fit reality — 60g of carbs from white rice behaves nothing like 60g from lentils, and both change again depending on fat, protein, cooking method, and what you ate before. Most people try it for a few months and abandon it. Not for lack of discipline — because the payoff doesn't justify the effort, and the model doesn't match reality anyway.
The reporting app logs your readings so your endocrinologist can review them at your next appointment. Useful for the clinical relationship. Not built for daily decisions. The design audience is the doctor, not the person holding the insulin pen.
Most experienced T1Ds have tried both and walked away from both. And so they do what experienced T1Ds actually do: manage by feel, built up through years of trial and error. It works — until the same surprises repeat. The same uncertainty lingers. Because gut feeling only works as well as your memory.
Log fast. Find anything later.
Each entry has a handful of fields: blood glucose, CGM reading, food, exercise, and a comments field. Plus tags.
The key is to write just enough that you'll recognise it later. Not a food diary. Not a medical record. Keywords.
"Homemade lasagne" is enough. "Large portion" adds context if the portion size will matter next time you're staring at the same dish. You don't need ingredient lists, gram counts, or macros — you need something you'd actually type when you're back in the same situation six weeks from now.
Tags make consistency effortless. Coloured, icon-based, fully configurable — and the app automatically surfaces your most recently used tags when you create a new entry, so the ones you reach for most are usually a single tap away. Use them for anything you want to mark reliably: a stressful day, a long run, a restaurant meal, anything worth flagging.
One practical tip: enable Swipe to Type on your iPhone. It's faster than autocorrect, far more reliable, and for short keyword entries it's almost effortless.
The result: a log that's fast enough to actually keep, and specific enough to find anything.
Right now, I need to know
"Did I already take insulin? How long ago did I eat? How much did I dose?"
These questions come up several times a day. Most of the time the answers live somewhere in your head — possibly wrong, certainly incomplete.
Open Glysimi. Your last entry is right there — what you ate, when you dosed, what your glucose was, how active you've been. The full picture of the last few hours, at a glance. Then you log what's happening now. That thirty seconds does something: writing forces noticing. The variables you'd normally blur through become visible before you decide.
Ten seconds from question to context. No dashboard, no navigation, no loading.
This is the habit anchor. The moment "open Glysimi" becomes the automatic response to "did I already dose?" — the logging habit forms almost by itself.
What happened last time?
"What happened the last few times I was in this situation?"
Not "what does the research say" — you've read the research. Not "what does the CGM show right now" — you have a CGM. But: what happened to your specific body, the last three or four times you were here?
Type what you're looking for. A food. A tag. An activity. A combination — "golf pizza" or "holiday dinner" or "stress burger." Glysimi finds every entry where those words appear and returns the full picture of each one — not just the matching entry, but the whole day: what came before, what came after, what your blood sugar did two hours later.
That's how patterns emerge. Not from being shown a chart you have to interpret. From seeing similar days side by side and recognising what you already half-knew.
The follow-up you always mean to do
"I should check in after that meal. I always forget."
You log lunch. You take your insulin. Life happens — a meeting, the kids, an errand — and 90 minutes later you've completely forgotten to check what your blood sugar did. The follow-up that would have told you whether your dose was right never happens.
Glysimi inserts it. When you log a meal, a reminder fires later: "You ate a while ago — worth a check?" Not an alarm. A nudge that knows what you logged and asks the right question at the right time.
You control which events trigger a reminder and how long after — after a meal, after a correction, after a low. Set it once. Glysimi does the remembering.
Good instincts come from experience. Better instincts come from remembering it.
Before and after
"I think I dosed about two hours ago. I'm not sure."
"This meal usually works okay, I think. I can't remember the last time I had it."
"I've been running high after dinner all week. I have no idea why."
"I took 3 units 97 minutes ago. I can see it right here."
"Last four times I had this: two were fine, one ran high. I probably underestimated the portion."
"I logged dinner late all three nights — after 9pm. And larger portions than usual. That's it."
Not a better algorithm. Better access to what already happened.
Your experience is already inside you. Glysimi makes it visible.
What Glysimi is not
- Not a carb counting tool — no gram databases, no macro tracking. You write what you'd search for, not what a nutritionist would record.
- Not a CGM replacement — it works alongside your Dexcom or Libre, not instead of it.
- Not a clinical reporting system — your endocrinologist isn't the audience. You are. That said, tag anything worth discussing and search it before your next appointment. You'll arrive with context instead of a blank screen.
- Not a gamification platform — no streaks, no points, no badges. Those undermine the intrinsic motivation that makes a habit last.
Ready to try it?
Join the beta program and be among the first T1Ds to try diabetes management that works the way you actually think.
Join the beta
Get early access via TestFlight. Use it daily and help shape the final product.
Join the Beta ProgramGet notified at launch
App release announcements only. No marketing. Unsubscribe anytime.
Notify me at launch →