Best Gym Weight Calculator Apps

250+ iOS apps curated and reviewed

4.8 avg rating
20 free apps
Updated September 2026

Out of 250+ gym weight calculator 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 Gym Weight Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Bar Is Loaded - Gym CalculatorBar Is Loaded - Gym CalculatorFree4.9★ (428)NoYesSep 2026
2Barbell Plate CalculatorBarbell Plate CalculatorFree4.8★ (236)YesYesSep 2026
3BMI Calculator – Weight LossBMI Calculator – Weight LossFree4.5★ (29K)NoYesOct 2026
4Liftoff - Ranked Gym WorkoutsLiftoff - Ranked Gym WorkoutsFree4.8★ (98K)NoYesOct 2026
5RepGenie: Gym CalculatorRepGenie: Gym CalculatorFree—NoYesJul 2026
6BMI Calculator‰BMI Calculator‰Free4.9★ (24K)YesNoOct 2026
7The Barbell CalculatorThe Barbell CalculatorFree5.0★ (1)NoNoJun 2026
8Barbell Weight Calculator + PRBarbell Weight Calculator + PRFree5.0★ (1)NoNoMay 2026

Top Picks for Gym Weight Calculator Apps

Bar Is Loaded - Gym Calculator#1

Bar Is Loaded - Gym Calculator by Danny Li

It's leg day, not brain day.
Editor's Choice
💪 Health & Fitness
4.9😊(428 ratings)
FreeIn-App Purchases
Bar Is Loaded - Gym Calculator screenshot 1
Bar Is Loaded - Gym Calculator screenshot 2
Bar Is Loaded - Gym Calculator screenshot 3
Bar Is Loaded - Gym Calculator screenshot 4
Bar Is Loaded - Gym Calculator screenshot 5
Bar Is Loaded - Gym Calculator screenshot 6

This app simplifies weightlifting calculations, instantly determining the correct plates to load onto a barbell. It offers custom settings for inventory and a reverse calculator, along with tools for meet preparation and performance scoring.

What We Love

  • 👍 Extremely user-friendly and intuitive interface
  • 🚀 Fast and accurate plate loading calculations
  • 💰 Completely free with no ads or subscriptions
  • 🧠 Eliminates mental math during workouts
  • 📊 Rich feature set including RPE, Wilks, and 1RM calculators
  • 🔄 Reverse calculation functionality for bar loading
  • 📱 Supports both kg and lb conversions seamlessly
  • 🎨 Clean and simple design
  • 👨‍💻 Responsive developer who takes feedback seriously
  • 📸 Ability to share loaded bar images on social media
  • ⚡ Lightweight and quick performance
  • 🏋️ Tailored specifically for powerlifters and weightlifters

Room to Improve

  • 🐛 Frequent crashes and infinite loading screens
  • 🐛 5kg calculation glitch in reverse section
  • 🐛 Inconsistent weight calculations with kg plates
  • ⚙️ Limited barbell weight customization options
  • ⚙️ Collar weight incorrectly set to 4kg instead of 5kg
  • ⚙️ Rounding errors with decimal plate weights
  • 📱 Compatibility issues with newer devices (iPhone 16 Pro)
  • ❌ No ladies bar weight option (35 lbs)
  • ❌ Missing 7.5kg plate option
BMI Calculator – Weight Loss#3

BMI Calculator – Weight Loss by Steffen Mayer

Calculate your ideal weight
Worth Considering
💪 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

More Gym Weight Calculator Apps apps to explore

FAQ about Gym Weight Calculator Apps

What are the best gym weight calculator apps for iPhone?
Bar Is Loaded - Gym Calculator tops our gym weight calculator apps ranking as of September 2026, with a 4.9-star average from 428 App Store ratings, and it's free to download.
Yes — 20 of the top gym weight calculator apps we rank are free to download, including Bar Is Loaded - Gym Calculator and Barbell Plate Calculator.
Bar Is Loaded - Gym Calculator has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ gym weight calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.