Best A1C Calculator Apps

250+ iOS apps curated and reviewed

4.2 avg rating
18 free apps
Updated August 2026

Every iPhone needs a few good a1c calculator apps. We benchmark 250+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top A1C Calculator Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1A1C Calculator Blood GlucoseA1C Calculator Blood GlucoseFree4.1★ (116)YesYesJul 2026
2A1C Monitor For CGMA1C Monitor For CGMFree5.0★ (25)YesYesAug 2026
3Glucose Buddy Diabetes TrackerGlucose Buddy Diabetes TrackerFree4.8★ (25K)YesYesAug 2026
4HbA1c Calculator – Blood SugarHbA1c Calculator – Blood SugarFree1.0★ (1)NoNoAug 2026
5HbA1c Converter mmol/mol to %HbA1c Converter mmol/mol to %Free was $0.495.0★ (2)NoYesMay 2026
6OneTouch Reveal® appOneTouch Reveal® appFree4.8★ (161K)NoNoAug 2026
7Glucose tracker++Glucose tracker++Free4.5★ (1.5K)NoYesAug 2026
8A1C to EAGA1C to EAGFree2.5★ (2)NoNoMay 2026

Top Picks for A1C Calculator

A1C Calculator Blood Glucose#1

A1C Calculator Blood Glucose by Feizan Ulhaq

Calculate & Track hbA1C
Editor's Choice
💪 Health & Fitness
4.1😊(116 ratings)
FreeAdsIn-App Purchases
A1C Calculator Blood Glucose screenshot 1
A1C Calculator Blood Glucose screenshot 2
A1C Calculator Blood Glucose screenshot 3
A1C Calculator Blood Glucose screenshot 4
A1C Calculator Blood Glucose screenshot 5

Calculate and track your A1C levels using your average blood glucose readings. Store results with dates, view historical data in a logbook, and visualize trends with charts. Designed for accessibility with screen reader support and multiple language options.

What We Love

  • 👍 Easy to use and intuitive interface
  • 📊 Helpful A1C tracking and prediction without waiting 3 months
  • 📈 Clear graphical history and data visualization
  • 🎯 Accurate glucose monitoring and recording

Room to Improve

  • 💳 Unauthorized billing and subscription charges
  • 🔧 Difficult navigation and confusing interface
  • ⚠️ Misleading app description about functionality
A1C Monitor For CGM#2

A1C Monitor For CGM by Free Ai APPs

Diabetes Food Glucose Tracker
Strong Contender
💪 Health & Fitness
5.0(25 ratings)
FreeAdsIn-App Purchases
A1C Monitor For CGM screenshot 1
A1C Monitor For CGM screenshot 2
A1C Monitor For CGM screenshot 3

Effortlessly track your estimated A1C with this app that pulls glucose data directly from Apple Health. It provides continuous insights into long-term glucose trends without manual logging or fingersticks.

Glucose Buddy Diabetes Tracker#3

Glucose Buddy Diabetes Tracker by Azumio Inc.

Log Blood Sugar, Carbs, & Meds
Worth Considering
🏥 Medical
4.8😐(25K ratings)
FreeAdsIn-App Purchases
#87in Medical
Glucose Buddy Diabetes Tracker screenshot 1
Glucose Buddy Diabetes Tracker screenshot 2
Glucose Buddy Diabetes Tracker screenshot 3
Glucose Buddy Diabetes Tracker screenshot 4
Glucose Buddy Diabetes Tracker screenshot 5
Glucose Buddy Diabetes Tracker screenshot 6

This app helps individuals manage their diabetes by tracking blood sugar, medication, and carb intake. It offers educational content, meal planning assistance, and data export for healthcare providers. Premium features provide advanced analytics and integrations.

What We Love

  • 🚀 Easy to use
  • 👍 Helpful for managing diabetes
  • 📊 Useful tracking and reporting features
  • 💪 Improved health outcomes

Room to Improve

  • 🐛 Bugs and glitches after updates
  • 💰 Expensive premium subscription
  • 📈 Inaccurate A1C estimates

More A1C Calculator apps to explore

4
HbA1c Calculator – Blood Sugar
HbA1c Calculator – Blood Sugar
HbA1c Calculator – Blood Sugar
Estimate Blood Sugar Diabetes
Free

This calculator estimates your blood sugar level using the HbA1c formula. It helps users quickly determine potential diabetes status or monitor blood sugar for those diagnosed. Results are provided in both mg/dl and mmol/L units.

Automatic HbA1c formula calculationEstimated blood sugar resultsResults in mg/dl and mmol/L
🏥 Medical
(1)
free
5
HbA1c Converter mmol/mol to %
HbA1c Converter mmol/mol to %
HbA1c Converter mmol/mol to %
mmol/mol to % and vice versa
Free
$0.49 | 100% OFF

Easily convert HbA1c values between mmol/mol and % units. It also estimates average glucose levels from mg/dL or mmol/L. A straightforward tool for quick and accurate conversions.

HbA1c conversion (mmol/mol to %)HbA1c conversion (% to mmol/mol)Estimated Average Glucose (eAG) calculation
🔧 Utilities
(2)
free with in-app purchases
6
OneTouch Reveal® app
OneTouch Reveal® app
OneTouch Reveal® app
Your diabetes management app
Free

This app helps individuals manage their diabetes by tracking blood glucose readings, food intake, insulin, and activity. It visualizes data to identify patterns, offers personalized insights and reminders, and allows users to share progress with their care team.

Blood glucose pattern identificationPersonalized reminders and guidanceDiabetes logbook with color-coded readings
🏥 Medical
(161K)
free with in-app purchases
7
Glucose tracker++
Glucose tracker++
Glucose tracker++
Log a1c — Blood sugar tracking
Free

Easily track blood sugar, A1C, and medications to identify trends and manage diabetes or prediabetes. Schedule reminders for diligent monitoring and gain insights into your health.

Blood sugar trackingA1C calculationMedication logging
🏥 Medical
(1.5K)
freemium
8
A1C to EAG
A1C to EAG
A1C to EAG
by Brad McAnalley
Free

This medical tool converts A1C lab results into estimated average glucose (eAG) levels. It provides a quick conversion for individuals monitoring their diabetes.

A1C to eAG conversionDiabetes monitoring aidSimple interface
🏥 Medical
(2)
free
9
AKUH Insulin Calculator
AKUH Insulin Calculator
AKUH Insulin Calculator
by Aga Khan Hospital and Medical College Foundation
Free

This tool assists medical professionals in adjusting insulin infusion rates. It calculates the necessary adjustments based on a patient's current and previous blood glucose levels, along with their current infusion rate.

Calculate insulin infusion ratesInput current blood glucoseInput prior blood glucose
💪 Health & Fitness
(3)
free
10
Calculator for iPad!
Calculator for iPad!
Calculator for iPad!
Basic & Scientific Calculator
Free

This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.

Basic and scientific calculator modesOver 30 scientific operationsCustomizable appearance (iPad)
🔧 Utilities
(61K)
free
11
Calculator ∞
Calculator ∞
Calculator ∞
The Best Scientific Calculator
$5.99

This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.

Step-by-step solution hintsMath Photos SolverHandwriting Recognition
📚 Education
(6.3K)
free with in-app purchases
12
CarbTrack: Diabetes Calculator
CarbTrack: Diabetes Calculator
CarbTrack: Diabetes Calculator
Track Carbs, Calc Insulin
Free
💪 Health & Fitness
(0)
13
Calculator - Calc
Calculator - Calc
Calculator - Calc
Calculator
Free

This app offers a comprehensive suite of calculators for everyday tasks and advanced mathematical needs. It includes tools for finance, unit conversion, health, and time calculations, all within a user-friendly interface.

Scientific calculator functionsPercentage and discount calculationsLoan and savings calculators
📚 Education
(0)
ad-supported
14
mySugr - Diabetes Tracker Log
mySugr - Diabetes Tracker Log
mySugr - Diabetes Tracker Log
Master Your Blood Sugar Level!
Free

This app centralizes all your diabetes-related data, including blood sugar readings, medication, and diet. It offers personalized tracking, automatic logging from connected devices, and insightful reports. Advanced features provide real-time glucose monitoring and insulin dose recommendations.

Personalized HomescreenAutomatic Blood Sugar LoggingReal-time Glucose Values
🏥 Medical
(33K)
free with in-app purchases
15
Dextrose Calc - GIR Calculator
Dextrose Calc - GIR Calculator
Dextrose Calc - GIR Calculator
GIR (Glucose Infusion Rate)
$4.99
$8.99 | 44% OFF
🏥 Medical
(0)
16
HealthyA1c
HealthyA1c
HealthyA1c
by Mohamad Alayouni
Free
$0.99 | 100% OFF
💪 Health & Fitness
(0)
17
Blood Sugar: Diabetes Tracker
Blood Sugar: Diabetes Tracker
Blood Sugar: Diabetes Tracker
Diabetes care with reminders
Free
🏥 Medical
(0)
18
Glucose and Insulin Calculator
Glucose and Insulin Calculator
Glucose and Insulin Calculator
Diabetes buddy for tracking
Free
🏥 Medical
(0)
19
GluCalc
GluCalc
GluCalc
by Alberto Clop
Free
🏥 Medical
(0)
20
Calculator‰
Calculator‰
Calculator‰
Default Calculator
Free

This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.

Large buttonsClear displayFast calculations
🔧 Utilities
(409K)
ad-supported

FAQ about A1C Calculator

What are the best a1c calculator apps for iPhone?
A1C Calculator Blood Glucose tops our a1c calculator apps ranking as of August 2026, with a 4.1-star average from 116 App Store ratings, and it's free to download.
Yes — 18 of the top a1c calculator apps we rank are free to download, including A1C Calculator Blood Glucose and A1C Monitor For CGM.
A1C Calculator Blood Glucose shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ a1c calculator apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
A1C Calculator Blood Glucose calculates your A1C percentage or mmol/mol from your average blood glucose readings in mg/dL or mmol/l, and vice versa. The app stores these calculations with dates for easy tracking.
Yes, the app features a logbook where you can view a history of all stored A1C calculation results. You can also see how your readings have changed throughout the year via charts.

Related searches