The Glucose Never Lies® Explorer Suite

The clearest picture of T1D management
you will ever get.

Six interactive explorers. Built from clinical trial data. Grounded in population-level evidence. Free. Nothing like this exists anywhere else.

Create your free account →

Free  •  No app download  •  Under two minutes to register

What you get access to

Six interactive explorers

Each one takes the clinical evidence and makes it interactive — so you can see how the principles apply to someone with your body weight, insulin sensitivity, and situation.

Activity & Exercise

10, 20, 30 Minutes Walking to Lower Highs

Enter your body weight, activity type, intensity, duration and IOB — get a precise glucose drop estimate and carbohydrate requirement, broken down into before, during, and after the session.

Learn more →

Alcohol & T1D

Alcohol Explorer

Alcohol suppresses gluconeogenesis — meaning your liver cannot rescue you from a hypo the same way. Maps glucose trajectory across your drinking window and the overnight hours that follow.

Learn more →

AID Systems

AID Algorithm Optimiser

CamAPS FX, Control-IQ, Omnipod 5, MiniMed 780G — compare systems side by side, understand target glucose logic, correction behaviour, and how your settings shape your outcomes.

Learn more →

Hypo & Hyper

Hypo & Hyper Treatment

Calculates your personal glucose rise from fast-acting carbohydrate and your correction dose for hyperglycaemia — based on your actual TDD and weight, not population averages.

Learn more →

Exercise Planning

Planning for Before, During and After Exercise

Builds a complete glucose management strategy for any session — insulin adjustment, carbohydrate strategy, and recovery carbs — across multiple glucose bands and therapies.

Learn more →

Exercise IOB

Carbs for 30 Minutes Exercise

Models the residual insulin on board from your most recent dose and how it interacts with exercise — so you can time sessions and adjust carbs with precision.

Learn more →

▶ New to GNL? Start here.

Begin with the 10, 20, 30 Minutes Walking to Lower Highs or the Hypo & Hyper Treatment — they show the most immediately useful numbers for day-to-day management. If you use an AID system, the AID Algorithm Optimiser should be your next stop.

Also included with your free account

The Glucose Never Lies® Podcast

36 episodes. The world’s leading T1D researchers, clinicians, and athletes — unpacking the evidence in plain English. Covering AID systems, CGM accuracy, exercise physiology, hypo management, alcohol, nutrition, and more.

Listen now →

Evidence-based reading

The GNL Guides

Clinical evidence written in plain English. Start with these three.

Insulin on Board (IOB) — The Complete Guide

Read the guide →

How to Choose a CGM — Start Here

Read the guide →

Automated Insulin Delivery (AID) Systems — The Guide

Read the guide →

Free access — no card required

Create your free account

Takes under two minutes. No app download. All six explorers included.

Educational use only. The GNL Explorers are built from clinical trial data and real-world patterns. They model how algorithms and physiological principles behave on average — not how any individual system will behave for you. They are not a prescription, not a medical device, and must not be used as one. All outputs are for education and discussion only. Any changes to your insulin settings, device configuration, or diabetes management must be made with your diabetes care team.

The Glucose Never Lies® is a registered trademark of GNL Ltd (UK Trade Marks UK00004267795 & UK00004360249).  •  Privacy Policy  •  Terms & Conditions  •  Registered in England & Wales