Virtual Breviary vs Bolus Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Virtual Breviary
Read full descriptionHide full description
Virtual Breviary app can calculate dosage of heparin and insulin. The app stores anonymous data in the cloud and deploys machine learning algorithms to find the optimal dosage. App is easy to use and ready to integrate into any hospital IT systems through APIs.
Bolus Guide
This app helps individuals with diabetes calculate precise insulin doses for meals and corrections. It uses user-inputted data like carb ratios and current glucose levels to provide exact and rounded insulin amounts, aiming to improve glycemic control and quality of life.
- Insulin dose calculation
- Pre-meal bolus calculation
- Correction dose calculation
- Input carb ratio
- Input sensitivity factor
- Input current blood glucose
- Input meal carbs
Read full descriptionHide full description
Bolus Guide is a user-friendly tool designed to simplify life for those living with diabetes. This app is built with an intuitive interface to help calculate the correct amount of insulin needed for pre-meal bolus and correction doses. By inputting a few critical pieces of data - such as carb ratio, sensitivity factor, target blood glucose, current blood glucose, and meal carbs - Bolus Guide quickly generates the insulin dose you require. The calculated dose is provided as both an exact number and a rounded value for easy and safe insulin administration. The goal of Bolus Guide is to provide you with increased confidence in your insulin dosing, contribute to better glycemic control, and promote an overall improved quality of life. Please note that while Bolus Guide is a helpful tool, it should be used in conjunction with advice from medical professionals. Your health is our priority, and we aim to make living with diabetes a bit easier with Bolus Guide.
Screenshots
Verdict
The clearest difference is update cadence: Bolus Guide at every 5 days against Virtual Breviary's fortnightly. Virtual Breviary's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Virtual Breviary ships an update fortnightly, Bolus Guide every 5 days. The most recent releases landed on September 23, 2026 and June 2, 2026 respectively.
| Parameter | Virtual Breviary | Bolus Guide |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.8 (12 ratings) — better |
| Positive reviews | — | 60.0% of reviews |
| Number of ratings | — | 12 — better |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 18 MB | 1 MB |
| Age rating | 4+ | 12+ |
| Developer | IKEM | David Vincent |
In-app purchases
Virtual Breviary
No in-app purchases
Bolus Guide
No in-app purchases









