Best Rep Calculator Apps

227+ iOS apps curated and reviewed

4.7 avg rating
19 free apps
Updated June 2026

Out of 227+ rep calculator apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Rep Calculator

1RM Calculator#1

1RM Calculator by Yuri Koshiishi

One Rep Max Strength
Editor's Choice
💪 Health & Fitness
4.9(86 ratings)
FreeIn-App Purchases
1RM Calculator screenshot 1
1RM Calculator screenshot 2
1RM Calculator screenshot 3
1RM Calculator screenshot 4
1RM Calculator screenshot 5

Easily calculate your one-rep max (1RM) strength with this app. It supports RPE input and allows you to estimate rep maxes based on your 1RM. Track your progress by saving your 1RM history for different exercises.

RepCount - Gym Workout Tracker#2

RepCount - Gym Workout Tracker by Siper Apps AB

Weight Lifting & Exercise Log
Strong Contender
💪 Health & Fitness
4.9😊(13K ratings)
FreeAdsIn-App Purchases
RepCount - Gym Workout Tracker screenshot 1
RepCount - Gym Workout Tracker screenshot 2
RepCount - Gym Workout Tracker screenshot 3
RepCount - Gym Workout Tracker screenshot 4
RepCount - Gym Workout Tracker screenshot 5
RepCount - Gym Workout Tracker screenshot 6

This app helps you track and analyze your strength training workouts. Log unlimited exercises and programs for free, with an optional premium subscription for advanced features like supersets and detailed progress charts.

What We Love

  • 👍 Great app
  • 🚀 Simple and intuitive interface
  • 🚀 Easy to use and log workouts
  • 🚀 Customizable exercises and routines

Room to Improve

  • 🐛 Occasional crashes or bugs
  • 💡 Lack of Apple Watch integration
  • 💡 Missing calorie tracking
My 1 Rep Max#3

My 1 Rep Max by James T. Constant

1 Rep Max Calculator
Worth Considering
💪 Health & Fitness
4.4(111 ratings)
FreeIn-App Purchases
My 1 Rep Max screenshot 1
My 1 Rep Max screenshot 2
My 1 Rep Max screenshot 3
My 1 Rep Max screenshot 4
My 1 Rep Max screenshot 5

Estimate your one rep max weight for various lifts using popular formulas. Track your progress over time with a built-in logbook. Offers custom lift creation and extended repetition calculations with a premium upgrade.

More Rep Calculator apps to explore

4
531 Strength
531 Strength
531 Strength
Keep focus on your lifts
Free

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.

Calculate 5/3/1 weightsTrack 1RM for exercisesView cycle step weights
💪 Health & Fitness
(11K)
free with in-app purchases
5
1RM Calculator - One Rep Max
1RM Calculator - One Rep Max
1RM Calculator - One Rep Max
Util for estimating max lifts
Free

Estimate your maximum weight lifted for a single repetition. Input your successful lifts and reps to gauge strength, compare progress, and plan future training. Offers advanced features for detailed tracking and analysis.

Estimate 1-rep maxTrack lift history and progressHistorical chart and list views
💪 Health & Fitness
(217)
free with in-app purchases
6
Rep Max Calculator
Rep Max Calculator
Rep Max Calculator
by Roman Shimchenko
Free

Calculate your maximum weight for a specific number of repetitions. Ideal for powerlifting, bodybuilding, and fitness enthusiasts, it supports calculations for 1 to 40 repetitions based on the weight lifted.

Calculate 1-rep maxSupports 1-40 repetitionsWeight-based calculation
💪 Health & Fitness
(3)
free with in-app purchases
7
One Rep Max: 1RM Calculator
One Rep Max: 1RM Calculator
One Rep Max: 1RM Calculator
Strength Tracker & Gym PR Tool
Free

Safely estimate your maximum lift potential for various strength exercises using scientific formulas. Track your progress visually, set goals, and fine-tune estimates with perceived exertion. Ideal for powerlifters, CrossFit athletes, and strength enthusiasts.

Precise 1RM calculations with 7 scientific formulasRPE integration for fine-tuned estimatesCustom exercise tracking for any lift
💪 Health & Fitness
(170)
free with in-app purchases
8
1RM Club: Rep Calculator & Log
1RM Club: Rep Calculator & Log
1RM Club: Rep Calculator & Log
Smash your goals with 1RM Club
Free

This fitness app helps users track and improve their strength training. It allows for detailed logging of workouts, calculation of rep maxes, and visualization of progress through dynamic graphs. Users can also participate in global challenges and utilize built-in timers for rest periods.

Rep Max TrackingWorkout LoggingProgress Tracking Graphs
💪 Health & Fitness
(1)
ad-supported
9
Calculator‰
Calculator‰
Calculator‰
Default Calculator
Free

This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.

Large buttonsClear displayFast calculations
🔧 Utilities
(404K)
ad-supported
10
Calculator·
Calculator·
Calculator·
Big Basic Calculator
Free

This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.

Basic arithmetic operationsPercentage calculationsMultiple color schemes
🔧 Utilities
(33K)
free with in-app purchases
11
1RM Percentage Calculator
1RM Percentage Calculator
1RM Percentage Calculator
Percentage-Based Workout Util
Free

This app helps you plan and calculate percentage-based workouts. It includes a one-rep max estimator and customizable weight settings for a personalized training experience. Easily track your sets and reps without manual calculations.

Percentage-based workout sets calculatorOne rep max estimate calculatorCustomizable plate weights
💪 Health & Fitness
(3)
free with in-app purchases
12
1 Rep Max Calc
1 Rep Max Calc
1 Rep Max Calc
by Will Stankus
Free

Calculate your one rep max (1RM) and explore potential rep maxes at various intensities. Supports both pounds and kilograms, with an intuitive interface and offline functionality for seamless strength training tracking.

Accurate one rep max calculationComprehensive rep maxes (95%-70%)Seamless unit conversion (lbs/kg)
🔧 Utilities
(6)
free
13
Loan Calculator‰
Loan Calculator‰
Loan Calculator‰
Simple Loan Calculator
Free

Easily calculate loan or mortgage payments. Simply input the loan amount, repayment term, and interest rate to get your estimated monthly payment.

Loan calculationMortgage calculationAmount input
💰 Finance
(96K)
ad-supported
14
Calculator for iPad₊
Calculator for iPad₊
Calculator for iPad₊
Basic, Scientific, Plus Calc
Free

This app offers both basic and advanced scientific calculations with an intuitive interface designed for tablets and phones. It includes features like currency conversion, calculation history, and the ability to share results. An optional premium membership removes ads and provides enhanced support.

Basic & Scientific CalculatorAdvanced Scientific FunctionsLive Currency Converter
🔧 Utilities
(126K)
free with in-app purchases
15
Calculator with History +
Calculator with History +
Calculator with History +
No ads & Scientific calculator
Free

This free calculator app offers a fast, ad-free experience with a visual input and calculation history. Customize your experience with various keyboard sounds and colors, and access advanced scientific functions when needed.

Ad-free experienceCalculation historyVisual input
💰 Finance
(23K)
free with in-app purchases
16
Simple One-Rep-Max Calculator
Simple One-Rep-Max Calculator
Simple One-Rep-Max Calculator
Calculate your 1RM like a pro!
$0.99

Calculate your one-rep max with confidence using a reliable calculator that provides realistic numbers through multiple proven formulas. Know your limits, choose the right weights, and progress safely to achieve your strength goals.

💪 Health & Fitness
(1)
17
Color Calculator-smart&cute
Color Calculator-smart&cute
Color Calculator-smart&cute
Cute calculator app with theme
Free

This app offers a customizable and fast calculator experience with a wide variety of themes. It includes scientific and standard modes, real-time results, and calculation history. Personalize your math with over 60 cute and colorful themes, including animated options.

60+ free cute and colorful themesExclusive dynamic and special themesScientific & Standard calculator modes
🔧 Utilities
(15K)
freemium
18
Rep Reserve
Rep Reserve
Rep Reserve
Calculate Your Strength
Free

Easily calculate strength statistics for your weightlifting sets. Receive a strength rating and track progress with custom exercises and detailed breakdowns of your one-rep max.

Calculate one-rep max (1RM)Strength rank (novice to elite)Save lifts for progress tracking
💪 Health & Fitness
(14)
free with in-app purchases
19
Basic Calculator+
Basic Calculator+
Basic Calculator+
Basic Four Function Calculator
Free

Perform essential arithmetic operations with a straightforward calculator app. Its large buttons and clear display ensure ease of use, supporting both portrait and landscape orientations.

Basic four functionsClear displayLarge buttons
🔧 Utilities
(243K)
free with in-app purchases
20
Setgraph: Gym Workout Tracker
Setgraph: Gym Workout Tracker
Setgraph: Gym Workout Tracker
Weight Lifting Strength Log
Free

This app helps users plan and track their weightlifting workouts, focusing on progressive overload and personalized strength training. It offers fast logging, detailed analytics, and customization options to help users achieve their fitness goals.

Fast and simple workout loggingPersonalized workout plansPowerful exercise organization
💪 Health & Fitness
(5.8K)
free with in-app purchases

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