Out of 250+ bolus guide apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
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.
This app provides diabetes management insights for continuous glucose monitoring (CGM) users. It helps identify glucose patterns and trends over time, aiding in better diabetes control and potentially increasing time in target glucose ranges. Users can track key metrics, share data with healthcare providers, and set personalized goals.
This app assists with calculating insulin doses for individuals managing diabetes. It offers features for simple bolus calculations, insulin sliding scales, and adjustments based on continuous glucose monitoring data. Supports both Canadian and U.S. blood glucose units.
Bolus Guide tops our bolus guide apps ranking as of September 2026, with a 3.8-star average from 12 App Store ratings, and it's free to download.
Are there free bolus guide apps for iPhone?
Yes — 20 of the top bolus guide apps we rank are free to download, including Bolus Guide and Dexcom Clarity.
Does Bolus Guide have ads or in-app purchases?
Bolus Guide has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
How many bolus guide apps are on the App Store?
We track 250+ bolus guide apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
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.