Best Weight Lifting Calculator Apps

250+ iOS apps curated and reviewed

4.5 avg rating
18 free apps
Updated September 2026

Bar Is Loaded is the household name in weight lifting calculator, but it's far from the only option. We track 250+ alternatives and competitors on iOS β€” many free, many higher-rated than you'd expect.

Compare top Weight Lifting Calculator Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Bar Is Loaded - Gym CalculatorBar Is Loaded - Gym CalculatorFree4.9β˜… (301)NoYesSep 2026
2Barbell Plate CalculatorBarbell Plate CalculatorFree was $4.994.8β˜… (236)YesYesSep 2026
3531 Strength531 StrengthFree4.9β˜… (12K)YesYesSep 2026
4Powerlift – Barbell CalculatorPowerlift – Barbell CalculatorFree4.5β˜… (72)NoYesMay 2026
5Lifting-CalculatorLifting-CalculatorFree5.0β˜… (1)NoNoMay 2026
61RM Calculator1RM CalculatorFree4.9β˜… (109)NoYesSep 2026
7Gym Bar CalculatorGym Bar CalculatorFree5.0β˜… (3)NoYesMay 2026
8MaxLift - 1RM CalculatorMaxLift - 1RM CalculatorFreeβ€”YesNoAug 2026

Top Picks for Weight Lifting Calculator

Bar Is Loaded - Gym Calculator#1

Bar Is Loaded - Gym Calculator by Danny Li

It's leg day, not brain day.
4.9😊(301 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

  • πŸ‘ Extremely user-friendly and intuitive interface
  • πŸš€ Fast and accurate plate loading calculations
  • πŸ’° Completely free with no ads or subscriptions
  • 🧠 Eliminates mental math during workouts
  • πŸ“Š Rich feature set including RPE, Wilks, and 1RM calculators
  • πŸ”„ Reverse calculation functionality for bar loading
  • πŸ“± Supports both kg and lb conversions seamlessly
  • 🎨 Clean and simple design
  • πŸ‘¨β€πŸ’» Responsive developer who takes feedback seriously
  • πŸ“Έ Ability to share loaded bar images on social media
  • ⚑ Lightweight and quick performance
  • πŸ‹οΈ Tailored specifically for powerlifters and weightlifters

Room to Improve

  • πŸ› Frequent crashes and infinite loading screens
  • πŸ› 5kg calculation glitch in reverse section
  • πŸ› Inconsistent weight calculations with kg plates
  • βš™οΈ Limited barbell weight customization options
  • βš™οΈ Collar weight incorrectly set to 4kg instead of 5kg
  • βš™οΈ Rounding errors with decimal plate weights
  • πŸ“± Compatibility issues with newer devices (iPhone 16 Pro)
  • ❌ No ladies bar weight option (35 lbs)
  • ❌ Missing 7.5kg plate option
531 Strength#3

531 Strength by Henrik Jachobsen

Keep focus on your lifts
Worth Considering
πŸ’ͺ Health & Fitness
4.9😊(12K ratings)
FreeAdsIn-App Purchases
531 Strength screenshot 1
531 Strength screenshot 2
531 Strength screenshot 3
531 Strength screenshot 4

This app simplifies tracking your progress on the 5/3/1 strength training program. It calculates and displays weights, reps, and sets based on your one-rep max, allowing you to easily plan and execute your workouts. Rounding options help match available gym plates.

What We Love

  • πŸš€ Simple and efficient
  • πŸ‘ Intuitive interface
  • πŸ’ͺ Helps with strength gains
  • πŸ”§ Customizable features
  • ⏱️ Convenient timer
  • πŸ“Š Tracking and progress logging

Room to Improve

  • πŸ”’ Inaccurate percentage calculations
  • πŸ—“οΈ Lack of ability to plan future workouts
  • πŸ“‹ Limited exercise tracking
  • πŸ’° Paid features not worth the cost

More Weight Lifting Calculator apps to explore

FAQ about Weight Lifting Calculator

What are the best weight lifting calculator apps for iPhone?
Bar Is Loaded - Gym Calculator tops our weight lifting calculator apps ranking as of September 2026, with a 4.9-star average from 301 App Store ratings, and it's free to download.
Yes β€” 18 of the top weight lifting 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+ weight lifting calculator apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Bar Is Loaded is a fast and easy plate loading calculator designed for lifters. It instantly tells you exactly what plates to load onto a barbell, eliminating guesswork. The app also includes various tools for meet preparation and performance scoring.
Key features include an instant plate calculator for both KG and LB, a customizable inventory for barbells and plates, and a reverse calculator. It also offers meet prep tools like rep max calculators and attempt selection, along with powerlifting and weightlifting scoring calculators.