# GRI Calculator — Calculate Glycemia Risk Index

> Professional tool for calculating Glycemia Risk Index from CGM data. (iPhone/iPad app by Diabetes Technology Society.)

- Source: https://appshunter.io/ios/app/gri-calculator/id6746769617 (this page in markdown: same URL + `.md`)
- Developer: [Diabetes Technology Society](https://appshunter.io/developer/1367986985)
- Category: Medical, Health & Fitness
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 12+
- Requires: iOS 15.1 · 18 MB
- Languages: American English
- Released: 2025-06-05
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/gri-calculator/id6746769617/reviews.md

## What is GRI Calculator?

GRI Calculator - Glycemia Risk Index - For Healthcare Professionals

Calculate the Glycemia Risk Index (GRI) quickly and accurately with this professional tool designed for clinicians managing patients with diabetes.

Overview

The GRI Calculator enables healthcare providers to assess glycemic control quality by analyzing continuous glucose monitoring (CGM) data. Simply input the percentage of time spent in VLow, Low, VHigh, and High glucose ranges from a standard 14-day Ambulatory Glucose Profile (AGP) report.

Key Features

Instant GRI Calculation - Get immediate results with hypoglycemia and hyperglycemia component breakdowns
Multi-Point Plotting - Plot multiple patients or multiple points over time
Visual Risk Assessment - View color-coded risk zones from A (minimal risk) to E (severe risk)
Interactive Plot Visualization - See the GRI plotted on a clear, easy-to-read graph
Evidence-Based - Built on peer-reviewed research published in the Journal of Diabetes Science and Technology
Reference Ranges - Quick access to glucose range definitions for VLow, Low, VHigh, and High
Educational Resources - Comprehensive reference section with links to relevant scientific articles

Professional Use

This calculator is intended for use by healthcare professionals as part of comprehensive diabetes management. GRI values help clinicians quickly identify patients who may need treatment adjustments, providing a standardized metric for assessing glycemic variability and risk.

Privacy First

No personal or patient data is collected, stored, or transmitted. All calculations are performed locally on your device.

Important Note

This app is for informational and educational purposes only. It should not replace clinical judgment or be used to make treatment decisions without proper medical consultation. Always base clinical decisions on complete patient assessment.

## Key features

- Instant GRI Calculation
- Multi-Point Plotting
- Visual Risk Assessment
- Interactive Plot Visualization
- Evidence-Based
- Reference Ranges
- Educational Resources


## Frequently asked questions about GRI Calculator

### What is the GRI Calculator?

GRI Calculator is a professional tool designed for clinicians to quickly and accurately calculate the Glycemia Risk Index (GRI) using continuous glucose monitoring (CGM) data for diabetes management.

### How does GRI Calculator work?

You input the percentage of time spent in VLow, Low, VHigh, and High glucose ranges from a standard 14-day Ambulatory Glucose Profile (AGP) report. The app then calculates the GRI and provides breakdowns of hypoglycemia and hyperglycemia components.

### Is GRI Calculator free to use?

Yes, GRI Calculator is available for free. It does not have any in-app purchases or advertisements.

### Does GRI Calculator collect patient data?

No, GRI Calculator prioritizes privacy. No personal or patient data is collected, stored, or transmitted. All calculations are performed locally on your device.

### What devices is GRI Calculator available on?

GRI Calculator is available on iPhone, iPad, and iPod devices.

### How often is GRI Calculator updated?

The latest version, 2.0.0, was released on August 14, 2025, indicating active development and updates.

### What is the age rating for GRI Calculator?

GRI Calculator has an age rating of 12+, making it suitable for older teens and adults.

### Is GRI Calculator based on scientific research?

Yes, the app is evidence-based and built on peer-reviewed research published in the Journal of Diabetes Science and Technology. It also includes educational resources with links to relevant scientific articles.

## Version history (last 3 releases)

### 2.0.0 — 2025-08-14

The Multi-Calc has been added to allow plotting of multiple GRI points.

### 1.0.1 — 2025-06-12

Routine maintenance update.

### 1.0 — 2025-06-05

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*