Best Fitness Calculator Apps

246+ iOS apps curated and reviewed

4.1 avg rating
19 free apps
Updated September 2026

From beginner-friendly picks to power-user tools, our fitness calculator list covers 246+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.

Compare top Fitness Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Army Fitness CalculatorArmy Fitness CalculatorFree4.7★ (979)YesNoSep 2026
2BMI Calculator – Weight LossBMI Calculator – Weight LossFree4.5★ (28K)NoYesSep 2026
3FitApp Fitness calculatorsFitApp Fitness calculatorsFreeYesYesMay 2026
4BMI Calculator‰BMI Calculator‰Free4.9★ (24K)YesNoSep 2026
5BMI, BMR & Body Fat CalculatorBMI, BMR & Body Fat CalculatorFree4.5★ (337)YesYesSep 2026
612 Fitness Calculators12 Fitness CalculatorsFree was $3.995.0★ (3)NoNoMay 2026
7Fitness Frog CalculatorsFitness Frog CalculatorsFreeNoNoJul 2026
8Fitness BMI CalculatorFitness BMI CalculatorFreeNoNoMay 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😞(28K 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

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 September 2026, with a 4.7-star average from 979 App Store ratings, and it's free to download.
Yes — 19 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 September 2026.
We track 246+ fitness calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
The Army Fitness Calculator app helps users calculate scores for Army Fitness Tests like the ACFT and APFT. It also allows for body composition calculations, promotion point tracking, and provides target raw values for different score percentages.
Key features include calculating ACFT and APFT scores, determining Ht/Wt and body fat percentage, calculating Semi-Centralized Promotion Points, and providing target raw values for minimum, maximum, or 80% scores. It also offers doctrinal verbiage for event instructions and links to official Army resources.

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