Best Fitness Calculator Apps

247+ iOS apps curated and reviewed

4.6 avg rating
18 free apps
Updated October 2026

From beginner-friendly picks to power-user tools, our fitness calculator list covers 247+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.

Compare top Fitness Calculator Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Army Fitness CalculatorArmy Fitness CalculatorFree4.7★ (979)YesNoOct 2026
2BMI Calculator – Weight LossBMI Calculator – Weight LossFree4.5★ (29K)NoYesOct 2026
3BMI Calculator‰BMI Calculator‰Free4.9★ (24K)YesNoOct 2026
4FitApp Fitness calculatorsFitApp Fitness calculatorsFree—YesYesMay 2026
5BMI, BMR & Body Fat CalculatorBMI, BMR & Body Fat CalculatorFree4.5★ (337)YesYesOct 2026
6Fitness Frog CalculatorsFitness Frog CalculatorsFree—NoNoJul 2026
712 Fitness Calculators12 Fitness CalculatorsFree5.0★ (3)NoNoMay 2026
8FITTR: Health & Fitness AppFITTR: Health & Fitness AppFree4.6★ (2.4K)NoYesOct 2026

Top Picks for Fitness Calculator

Army Fitness Calculator#1

Army Fitness Calculator by Benjamin Hultquist

ACFT, APFT, and Body Comp
Editor's Choice
💪 Health & Fitness
4.7😞(979 ratings)
FreeAdsIn-App Purchases
Army Fitness Calculator screenshot 1
Army Fitness Calculator screenshot 2
Army Fitness Calculator screenshot 3
Army Fitness Calculator screenshot 4
Army Fitness Calculator screenshot 5
Army Fitness Calculator screenshot 6

Calculate Army Fitness Test (ACFT, APFT) scores, body composition, and promotion points. Get target raw values for minimum, maximum, or 80% scores based on gender and age. Includes event instructions and links to official resources.

What We Love

  • 🚀 Up to Date
  • 👍 One of the best apps of its type
  • 👍 Just what I was looking for

Room to Improve

  • 🔒 Locks your old scores behind new Premium version
  • 🐛 Heats up quick
  • 🐛 Freezes Up iPhone
  • 🐛 Affected My Phone
  • 🐛 Locks up the phone
  • 🐛 Screen size does adjust some fields are off screen
  • 🐛 Pop up keyboard does not go away
BMI Calculator – Weight Loss#2

BMI Calculator – Weight Loss by Steffen Mayer

Calculate your ideal weight
Strong Contender
💪 Health & Fitness
4.5😞(29K ratings)
FreeIn-App Purchases
BMI Calculator – Weight Loss screenshot 1
BMI Calculator – Weight Loss screenshot 2
BMI Calculator – Weight Loss screenshot 3

Calculate and track your Body Mass Index (BMI) with this user-friendly app. It provides personalized health insights, ideal weight recommendations, and supports various units and classification systems. Monitor your weight journey and understand health risks.

What We Love

  • 🚀 Easy to use
  • 📊 Helps track progress
  • 💪 Motivates weight loss

Room to Improve

  • 🤕 Can cause insecurity
  • 🚫 Inaccurate BMI calculations
  • 🚨 Promotes unhealthy behaviors
BMI Calculator‰#3

BMI Calculator‰ by Tim O's Studios, LLC

Body Mass Index Calculator
Worth Considering
💪 Health & Fitness
4.9😐(24K ratings)
FreeAds
BMI Calculator‰ screenshot 1
BMI Calculator‰ screenshot 2

Easily calculate your Body Mass Index (BMI) with this straightforward application. It provides a quick way to understand your weight status based on your height and weight.

What We Love

  • 🚀 Quick and easy to use
  • 👍 Straightforward interface
  • ✅ Accurate BMI calculations
  • 💡 Supports both metric and imperial units

Room to Improve

  • 🐛 Inability to input decimal values for height and weight
  • 🔍 Lacks advanced features like body composition analysis
  • 💸 Aggressive advertising interrupting usage
  • 🔧 Compatibility issues with newer OS versions

More Fitness Calculator apps to explore

FAQ about Fitness Calculator

What are the best fitness calculator apps for iPhone?
Army Fitness Calculator tops our fitness calculator apps ranking as of October 2026, with a 4.7-star average from 979 App Store ratings, and it's free to download.
Yes — 18 of the top fitness calculator apps we rank are free to download, including Army Fitness Calculator and BMI Calculator – Weight Loss.
Army Fitness Calculator shows ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 247+ fitness calculator apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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