Best Gym Calculator Apps

250+ iOS apps curated and reviewed

4.9 avg rating
18 free apps
Updated October 2026

Every iPhone needs a few good gym 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 Gym Calculator Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Bar Is Loaded - Gym CalculatorBar Is Loaded - Gym CalculatorFree4.9★ (549)NoYesOct 2026
2The Barbell CalculatorThe Barbell CalculatorFree5.0★ (1)NoNoOct 2026
3Barbell Plate CalculatorBarbell Plate CalculatorFree4.8★ (288)YesYesOct 2026
4RepGenie: Gym CalculatorRepGenie: Gym CalculatorFree—NoYesJul 2026
5Gym Bar CalculatorGym Bar CalculatorFree5.0★ (3)NoYesMay 2026
6Barbell Calculator – Gym MathBarbell Calculator – Gym MathFree5.0★ (1)NoNoOct 2026
71RM Calculator1RM CalculatorFree4.8★ (126)NoYesOct 2026
8Good Gym CalculatorGood Gym CalculatorFree—NoNoAug 2026

Top Picks for Gym Calculator

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😊(549 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
4.8(288 ratings)
FreeAdsIn-App Purchases
Barbell Plate Calculator screenshot 1
Barbell Plate Calculator screenshot 2
Barbell Plate Calculator screenshot 3
Barbell Plate Calculator screenshot 4
Barbell Plate Calculator screenshot 5
Barbell Plate Calculator screenshot 6

Easily calculate the barbell plates needed to reach a target weight or determine the total weight on a loaded bar. This app simplifies weightlifting math, allowing you to focus on your workout. It offers customizable options and a timer for tracking exercises.

More Gym Calculator apps to explore

FAQ about Gym Calculator

What are the best gym calculator apps for iPhone?
Bar Is Loaded - Gym Calculator tops our gym calculator apps ranking as of October 2026, with a 4.9-star average from 549 App Store ratings, and it's free to download.
Yes — 18 of the top gym calculator apps we rank are free to download, including Bar Is Loaded - Gym Calculator and The Barbell Calculator.
Bar Is Loaded - Gym Calculator has no ads and offers in-app purchases, according to its App Store listing as of October 2026.
We track 250+ gym 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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