The Glucose Never Lies®
GNL Explorers
Put in your numbers. See what the evidence says.
Six interactive educational tools — each one built from peer-reviewed clinical trial data and validated against one of the largest real-world T1D datasets ever used to support an educational platform.
Welcome back, . Your explorers are below — pick up where you left off.
Six explorers
Choose your starting point
Compare what the evidence says should happen on average to what you experience. That gap is where the learning is.
Activity & Exercise
10, 20, 30 Minutes Walking to Lower Highs
In the presence of insulin, exercise can lower glucose up to eight times faster than a correction dose. Enter your body weight, insulin on board, activity type, intensity, and duration — get your estimated glucose drop and carbohydrate requirement before, during, and after the session.
Alcohol & T1D
Alcohol Explorer New
Alcohol suppresses gluconeogenesis — meaning your liver cannot rescue you from a hypo the way it normally would. Enter what you drink, your body weight, and timing. The Explorer maps the average glucose risk window across the drinking period and overnight hours that follow.
AID Systems
AID Algorithm Optimiser
CamAPS FX, Control-IQ, Omnipod 5, MiniMed 780G — each algorithm works differently. Compare all four systems side by side: target glucose logic, correction behaviour, algorithm-calculated basal rates, and how your settings shape your outcomes.
Hypo & Hyper
Hypo & Hyper Treatment
The rule of 15 is a starting point. This Explorer calculates your personal glucose rise from fast-acting carbohydrate and your correction dose for hyperglycaemia — based on your actual TDD and body weight, not population averages. Treat more precisely. Correct without the rebound.
Exercise Planning
Planning for Before, During and After Exercise
Build a complete glucose management plan for any session — insulin adjustment, carbohydrate strategy, and recovery carbs — across multiple glucose bands. Adapts to MDI, pump, and AID therapy. Includes before, during, and after guidance plus overnight considerations for evening sessions.
Exercise IOB
Carbs for 30 Minutes Exercise
Insulin on board is the most important — and most invisible — factor in exercise hypoglycaemia risk. This Calculator estimates how much carbohydrate you may need for 30 minutes of activity based on your physiological IOB, body weight, and exercise type.
How to use the Explorers
Start with whatever you are most curious about
Use your own numbers. Each Explorer takes your body weight, TDD, and settings. The output is not a prescription — it is a picture of what the evidence suggests happens on average for someone in your situation. Compare it against your CGM data and talk through what you find with your diabetes care team.
All Explorers are for educational exploration only. They describe average physiological responses and general principles. They are not medical advice and cannot replace individual clinical guidance.
GNL Grace
Not sure which Explorer to use? Tell Grace what you want to explore and she will point you to the right tool and explain how to use it.
Real-world validation
Validated against one of the largest real-world T1D datasets ever used to support an educational platform
Every GNL Explorer algorithm has been systematically tested against real-world population data accessed through an academic research collaboration. No other T1D education platform outside a pharmaceutical or device manufacturer setting has access to evidence at this scale.
How GNL builds its tools and curates evidence →
Coming soon: CGM System Explorer — compare CGM accuracy, sensor wear patterns, and how to interpret CGM data across devices. Built in partnership with leading CGM researchers. More Explorers follow after that.