Documentation
Learn how Prick tracks your glucose, calculates your metrics, and helps you manage prediabetes. Every feature and metric explained in plain language.
Your Numbers
Time in Range (TIR)
How Time in Range measures the percentage of your glucose readings in a healthy window, and why it gives a fuller picture than any single reading.
Glucose Management Indicator (GMI)
How GMI estimates your HbA1c from glucose readings, letting you track long-term glucose control between doctor visits.
Glucose Variability (CV and SD)
How the Coefficient of Variation and Standard Deviation measure glucose fluctuations, and why high variability is an independent risk factor.
Fasting Glucose
What your fasting glucose reading means, how it reflects overnight insulin and liver function, and what targets to aim for.
Post-Meal Glucose Spike
How post-meal spikes are calculated from paired readings, what the 5-tier scale means, and why keeping spikes small protects your long-term health.
Trend Direction
How the app compares your 3-day and 7-day fasting averages to show whether your glucose control is improving, stable, or worsening.
Blood Glucose Risk Index (LBGI, HBGI, and GRI)
How LBGI, HBGI, and GRI weight extreme glucose values to measure your risk of dangerous highs and lows beyond what simple averages reveal.
MAGE and MODD
How MAGE measures the size of significant glucose swings and MODD measures day-to-day consistency, revealing patterns other metrics miss.
Understanding Glucose
What Is Glucose
A plain-language explanation of what glucose is, how your body regulates it, and why tracking it matters for preventing long-term damage.
Prediabetes Explained
What prediabetes means, how it is diagnosed, and why research shows the majority of people can return to normal glucose levels through lifestyle changes.
Understanding HbA1c
What HbA1c measures, how it reflects your average glucose over 2-3 months, and how the app's GMI estimate relates to your lab test results.
The Dawn Phenomenon
Why your morning fasting glucose can be higher than your bedtime reading, and what you can do to reduce this natural early-morning glucose rise.
The Second Meal Effect
How the food you eat at one meal influences your glucose response to the next meal, and why a good dinner improves your morning readings.
Prediabetes Progression Risk
What research says about prediabetes progression rates, and how lifestyle intervention reduces the risk of developing type 2 diabetes by up to 58%.
Lifestyle & Diet
Indian Diet Guide for Prediabetes
A comprehensive guide to managing prediabetes with Indian foods, covering rice, dal, dosa, sambar, and practical strategies for proportion, pairing, and sequencing.
Rice Strategies
Practical strategies for managing rice portions and preparation to reduce post-meal glucose spikes by 20-40 mg/dL without eliminating rice.
Dal Benefits
Why dal and legumes are among the most glucose-friendly foods available, and how increasing your dal portion is one of the most effective dietary changes for prediabetes.
Millet Alternatives
How millets like foxtail, jowar, bajra, and ragi offer significantly lower glycaemic impact than white rice, with practical tips for incorporating them.
Dosa Variants Compared
A comparison of rice dosa, millet dosa, wheat dosa, and other variants with their GI values and practical tips for reducing breakfast glucose spikes.
South Indian Breakfast Guide
A ranked comparison of South Indian breakfast options by glucose impact, with the sambar rule and practical modifications for better morning readings.
Exercise and Glucose
How different types and amounts of physical activity lower blood glucose immediately and for up to 48 hours, with quantified impacts for walking, resistance training, and more.
Sleep and Glucose
How sleep duration, timing, and consistency directly affect fasting glucose and insulin resistance, with quantified impacts of poor sleep on readings.
Stress and Glucose
How stress hormones directly raise blood sugar through a measurable physiological mechanism, and why managing stress is clinical glucose management.
Intermittent Fasting
How time-restricted eating improves fasting glucose and insulin sensitivity, with practical protocols starting from a simple 12-hour overnight fast.
Food Order Impact
How eating vegetables and protein before carbohydrates reduces post-meal glucose spikes by 25-40% from the exact same foods in a different sequence.
Medication and Glucose Timing
Educational information on how the timing of medication like metformin relative to meals affects glucose control, and why this is worth discussing with your doctor.
Testing Guide
Paired Meal Testing
How to take pre-meal and post-meal glucose readings to calculate your spike, and why the difference between the two is more informative than either reading alone.
Experiment Design
How to use the app's A/B testing feature to run controlled N-of-1 experiments and find out which dietary changes actually work for your body.
Food Consistency Testing
Why your glucose response to the same meal varies by 10-20% day to day, and how many repetitions you need before drawing reliable conclusions.
How We Calculate
A transparent reference listing every formula the app uses to calculate glucose metrics, from mean and SD to GMI, TIR, LBGI/HBGI, MAGE, and MODD.
Data Quality
How much data each metric needs to be reliable, what the quality indicators mean, and how to build enough readings for trustworthy glucose insights.