Free

Details

  • Released
  • Updated
  • July 3, 2023
  • March 3, 2026

Features

Bolus Guide screenshot #1 for iPhone
Bolus Guide screenshot #2 for iPhone
Bolus Guide screenshot #3 for iPhone
Bolus Guide screenshot #4 for iPhone
Bolus Guide screenshot #5 for iPhone
iphone
ipad
🖼️Get Icon
Icons↘︎

About

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
Show original description

What's New in Bolus Guide

1.4

March 3, 2026

• Improved dark mode support — input fields are now fully readable in dark mode. • New dose rounding option — choose between rounding to the nearest half unit or always rounding down. Configurable in Settings. • Customizable high dose warning — set your own threshold for when the high dose alert appears. • General UI improvements.

More

User reviews

How do I enter all info with the number pad covering the screen?

The title says it all about my review. When you try to enter any numeric information, there is a huge number pad covering almost all of the places to add the info. Nothing is obvious to make the numpad minimize or close, and touching any part of the screen other than the numbers or where the numbers are put into closes the numpad. Basically useless unless there is some secret way to enter your carb etc numbers without having to just give up. 🤷‍♂️
Show more

Great, But…

The app is awesome and easy to use. Only downside for me is that I like to use dark mode on my phone and the app isn’t friendly with it. You can’t see your inputs in the boxes unless your phone is in light mode. No big deal. It’s a free app with no ads which I love. But if the developer has time, maybe they could address that?
Show more

Has an annoying inconvenience

This app works great and helps me keep my glucose levels regulated but it has one problem. This app does not support dark mode.
When dark mode is activated, the value fields appear blank. The numbers are there but the font color is the same as the background color.
I have to turn off dark mode every time I use this app.
Show more

Great App

Works very well, UI looks nice.

Simplicity!

As a parent of a newly diagnosed T1D, I really appreciate the simplicity of this app for calculating my child’s bolus dose. My child is 10, so we are coaching them on calculating the bolus, and this takes out any math errors. The measurements are in 0.5 increments, which is nice for Humalog Jr. I use a separate app for calculating carbs. Again, I appreciate having this simple app that isn’t a giant phone memory drain, or too many features I don’t need!
Show more

Developer apps

FAQ

How does Bolus Guide calculate insulin doses?

Bolus Guide calculates insulin doses by taking into account your carb ratio, sensitivity factor, target blood glucose, current blood glucose, and the amount of carbohydrates in your meal. It then provides both an exact and a rounded insulin dose.

What information do I need to use Bolus Guide?

To use Bolus Guide, you will need to input your carb ratio, sensitivity factor, target blood glucose, current blood glucose reading, and the number of carbohydrates in your meal.

Is Bolus Guide suitable for all ages?

Bolus Guide has an age rating of 12+, indicating it is intended for users aged 12 and older. It is designed to assist individuals managing diabetes.

On which devices can I use Bolus Guide?

Bolus Guide is available for use on iPhones and iPads, offering a convenient tool for Apple device users managing diabetes.

How often is Bolus Guide updated?

The latest version of Bolus Guide is 1.4, and it was last updated on March 3, 2026. This suggests regular updates to maintain functionality and potentially add new features.

Does Bolus Guide have ads?

No, Bolus Guide does not contain advertisements. The app is free to use and does not display any ads, providing an uninterrupted experience for users.

What is the user rating for Bolus Guide?

Bolus Guide has a rating of 3.8 stars based on 12 ratings. This indicates a generally positive reception from its user base.

Should I consult a medical professional when using Bolus Guide?

Yes, it is important to use Bolus Guide in conjunction with advice from medical professionals. While it is a helpful tool, it should not replace professional medical guidance for diabetes management.