No CGM,
just today's glucose prediction.
You don't need to wear a continuous glucose monitor (CGM). Log your meals and activity, and the app predicts today's blood-sugar curve.
How does it work without a CGM?
Three steps, and today's blood-sugar curve is drawn.
Log
Log meals and activity in a few taps. Pick from the menu or snap a photo — reflected instantly, no wait.
Learn
The Bayesian engine learns you. First personalization at ~30 entries; stabilization at ~60. It gets more accurate the more you use it.
Predict
Draws today's glucose curve — 2-hour post-meal forecast, low/high warnings, and an exercise prescription, all in one place.
※ CGM (Continuous Glucose Monitor) = a device worn on the skin that measures blood glucose in real time. vCGM works without this device.
Six core features
We don't just look at blood sugar — the whole life goes into the curve.
Glucose prediction
Previews the 2-hour post-meal curve — peak time and intensity included.
Meal logging
Menu search and photo recognition, with a built-in 231-item Korean food database.
Exercise prescription
"How many minutes should I walk right now?" — auto-calculated, MET-based inverse math.
Personalized learning
First-stage personalization at ~30 entries; stabilization begins at ~60.
Medication modeling
Five classes modeled: metformin, SGLT2, DPP-4, GLP-1, corticosteroids.
Sleep & stress
Whole-life context is reflected in your glucose curve.
Who fits best
Preventive management
Normal glucose today, but wants to get ahead of post-meal drowsiness or a family history of diabetes.
Daily management
Already diagnosed with diabetes, needing day-to-day management. A large-font senior mode turns on automatically at age 60+.
Fasting glucose 110–125
Fasting glucose at the borderline — time to improve eating habits.
The more you use it, the closer it fits.
On day one, predictions start from a population average. By ~30 entries, first-stage personalization is complete; from ~60 onward, the model enters its stabilization phase — the most accurate prediction band.
⚠️ Important notices
- vCGM is not a medical device. Please use it for reference only.
- Insulin-dosing decisions must be made in consultation with your physician.
- Type-1 diabetes, gestational diabetes, and pediatric diabetes require a physician consultation before use.
- Predictions vary between individuals. If you experience symptoms, seek medical care immediately.
Frequently asked questions
How does it predict blood glucose without a CGM?
How accurate is it in the beginning?
Who should not use it?
Do you support partnership, OEM, or licensing?
Join the vCGM beta
We're recruiting beta testers through our Naver Cafe community. We're looking for people who will log meals and activity each day.