Best Bolus Guide Apps

250+ iOS apps curated and reviewed

4.3 avg rating
20 free apps
Updated September 2026

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.

Compare top Bolus Guide Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Bolus GuideBolus GuideFree3.8★ (12)NoNoMay 2026
2Dexcom ClarityDexcom ClarityFree4.6★ (13K)NoNoSep 2026
3BolusCalcBolusCalcFree3.8★ (23)NoNoAug 2026
4OneTouch Reveal® appOneTouch Reveal® appFree4.8★ (161K)NoNoSep 2026
5Diabetes smartmanager incl. Basal-Bolus therapyDiabetes smartmanager incl. Basal-Bolus therapyFree2.0★ (1)NoYesMay 2026
6Smart BolusSmart BolusFreeNoNoSep 2026
7Bolus CalculatorBolus CalculatorFree5.0★ (1)NoYesAug 2026
8Libre by AbbottLibre by AbbottFree4.6★ (110K)NoNoSep 2026

Top Picks for Bolus Guide

Bolus Guide#1

Bolus Guide by David Vincent

Editor's Choice
🏥 Medical
3.8(12 ratings)
Free
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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.

Dexcom Clarity#2

Dexcom Clarity by DexCom, Inc.

Strong Contender
🏥 Medical
4.6😊(13K ratings)
Free
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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.

What We Love

  • 🚀 Provides great insight
  • 📊 Helpful reports and data
  • 💯 Life-changing device
  • 🔍 Detailed glucose tracking
  • 🤝 Integrates with healthcare providers

Room to Improve

  • 🐛 Connectivity issues
  • 🔒 Login problems
  • 📉 Unreliable sensor readings
  • 🚫 Doesn't work internationally
  • 📱 Poor iPad support
BolusCalc#3

BolusCalc by BC Children's Hospital

Insulin Bolus Calculator
Worth Considering
🏥 Medical
3.8(23 ratings)
Free
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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.

More Bolus Guide apps to explore

FAQ about Bolus Guide

What are the best bolus guide apps for iPhone?
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.
Yes — 20 of the top bolus guide apps we rank are free to download, including Bolus Guide and Dexcom Clarity.
Bolus Guide has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
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.
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.
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.