Best 1Rm Calculator & Strength Log Apps

249+ iOS apps curated and reviewed

4.1 avg rating
17 free apps
Updated August 2026

1RM Calculator & Strength Log is the household name in 1rm calculator & strength log, but it's far from the only option. We track 249+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.

Compare top 1Rm Calculator & Strength Log Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
11RM Calculator & Strength Log1RM Calculator & Strength LogFreeNoYesAug 2026
21RM Calculator1RM CalculatorFree4.9★ (109)NoYesSep 2026
3One Rep Max: 1RM CalculatorOne Rep Max: 1RM CalculatorFree4.4★ (178)YesYesAug 2026
41-RM1-RM$1.994.8★ (1.1K)NoNoAug 2026
51RM Percentage Calculator1RM Percentage CalculatorFree5.0★ (3)NoYesMay 2026
6Timberlog: Log Scale CalcTimberlog: Log Scale CalcFree4.7★ (34)YesYesAug 2026
7Calculate your 1RMCalculate your 1RMFree4.7★ (7)NoYesAug 2026
81 Rep Max Calc1 Rep Max CalcFree4.5★ (11)NoNoSep 2026

Top Picks for 1Rm Calculator & Strength Log

1RM Calculator#2

1RM Calculator by Yuri Koshiishi

One Rep Max Strength
Strong Contender
💪 Health & Fitness
4.9(109 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.

One Rep Max: 1RM Calculator#3

One Rep Max: 1RM Calculator by Charles Vanderhoff

Strength Tracker & Gym PR Tool
Worth Considering
💪 Health & Fitness
4.4(178 ratings)
FreeAdsIn-App Purchases
One Rep Max: 1RM Calculator screenshot 1
One Rep Max: 1RM Calculator screenshot 2
One Rep Max: 1RM Calculator screenshot 3
One Rep Max: 1RM Calculator screenshot 4
One Rep Max: 1RM Calculator screenshot 5
One Rep Max: 1RM Calculator screenshot 6

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.

More 1Rm Calculator & Strength Log apps to explore

4
1-RM
1-RM
1-RM
Calculate and track your 1RM
$1.99

Easily calculate and track your one-rep max (1RM) for any lift. Estimate your maximum weight safely without testing, and monitor your progress over time with detailed charts. Improve your training with expert articles.

Calculate 1RM and percentagesSupport for various liftsTrack 1RM history with charts
💪 Health & Fitness
(1.1K)
free
5
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
6
Timberlog: Log Scale Calc
Timberlog: Log Scale Calc
Timberlog: Log Scale Calc
Board feet & volume calculator
Free

Calculate timber volume in various units like cubic meters, cubic feet, or board feet. This tool supports multiple log scaling methods and local timber volume tables for different tree species. Easily create and share reports in Excel format.

Multiple volume units (m³, ft³, board feet)Supports numerous log scaling methodsLocal timber volume tables for various species
🔧 Utilities
(34)
free with in-app purchases
7
Calculate your 1RM
Calculate your 1RM
Calculate your 1RM
by JosmanTek
Free

This app helps you determine your one-repetition maximum (1RM) for various strength exercises. It uses several well-known formulas to calculate your maximum lift capacity, aiding in tracking training effectiveness and progress.

1RM calculationMultiple formulas (Epley, Lander, etc.)Track strength and power
💪 Health & Fitness
(7)
free with in-app purchases
8
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
(11)
free
9
MaxOut 1RM Strength Calculator
MaxOut 1RM Strength Calculator
MaxOut 1RM Strength Calculator
One Rep Max & Strength Rank
Free
💪 Health & Fitness
(0)
10
MaxLift - 1RM Calculator
MaxLift - 1RM Calculator
MaxLift - 1RM Calculator
One Rep Max Calculator
Free

Calculate your maximum weight for a single repetition of any exercise. This tool helps estimate your strength for key lifts, aiding in training program design and progress tracking. Prioritize safety and effective programming by understanding your one-rep max.

1RM calculation for any exerciseEstimate strength levelsAid in training program design
💪 Health & Fitness
(0)
ad-supported
11
LOG: Gym Workout Tracker & 1RM
LOG: Gym Workout Tracker & 1RM
LOG: Gym Workout Tracker & 1RM
Sets, Reps, Weight & Progress
Free

This app offers a straightforward way to log gym workouts, track sets, weight, and reps with a large number pad for quick entry. It includes a built-in calculator for estimated 1RM and training weights, and stores all records locally on your device.

Fast workout loggingSets, weight, and reps trackingBuilt-in 1RM calculator
💪 Health & Fitness
(2)
ad-supported
12
Wood Log Calculator
Wood Log Calculator
Wood Log Calculator
Log Volume, Weight & Density
$7.99

This offline tool helps woodworkers, foresters, and timber traders calculate log volume using over 80 log rules. It also estimates weight, density, and length, and includes a commercial wood species database with properties. Calculations can be easily shared and exported in various formats.

80+ Wood Log RulesCalculate volume, weight, density, lengthExport results (Text, CSV, PDF)
📊 Productivity
(2)
paid
13
Timber Cruiser: Log Calculator
Timber Cruiser: Log Calculator
Timber Cruiser: Log Calculator
Board Feet Calculator & Cruise
Free
$7.99 | 100% OFF

This app digitizes timber cruising with a board feet calculator, species inventory, and integrated clinometer and compass. Generate PDF reports and CSV data exports for analysis, all while working offline in remote areas.

Board feet calculator (Doyle Log Rule)Clinometer and compassMulti-species inventory with custom pricing
📊 Productivity
(1)
free with in-app purchases
14
Weight Log & PR Tracker - Rivu
Weight Log & PR Tracker - Rivu
Weight Log & PR Tracker - Rivu
1RM calculator & strength log
Free
💪 Health & Fitness
(0)
15
Metric - Strength Training
Metric - Strength Training
Metric - Strength Training
Barbell velocity & workout log
Free

This app revolutionizes strength training by offering advanced velocity-based tracking using your phone's camera, eliminating the need for expensive hardware. It provides detailed insights into fatigue, recovery, and progression, helping users maximize gains and prevent injuries.

Smart velocity tracking with cameraAdvanced video analysis of liftsComprehensive workout logging
💪 Health & Fitness
(45)
freemium
16
RM -Calculator-
RM -Calculator-
RM -Calculator-
Get the best training
Free

Calculate elevation weights and training times to maximize your efficiency during weight training. Easily switch units by touching them.

Calculate elevation weightsCalculate training timesMaximize training efficiency
💪 Health & Fitness
(1)
free
17
Wendler Log 531
Wendler Log 531
Wendler Log 531
5/3/1 Strength Training Log
Free

This app automates weight calculations for the Wendler 5/3/1 powerlifting program, tracks progress with detailed logs and PRs, and offers customizable training plans. Advanced features include pre-built assistance programs, a plate calculator, and progress charts.

Automatic weight calculationsComplete lift history trackingAMRAP score tracking
💪 Health & Fitness
(518)
free with in-app purchases
18
1RM - One Rep Max Calculator
1RM - One Rep Max Calculator
1RM - One Rep Max Calculator
One Rep Max Calculator - 1RM
Free
💪 Health & Fitness
(0)
19
Concrete Calculator Plus
Concrete Calculator Plus
Concrete Calculator Plus
by Inch Calculator
Free

This app provides 15 calculators for estimating concrete, blocks, mortar, rebar, and gravel. It supports various shapes and units, offering material cost estimations for construction projects.

15 concrete estimation calculatorsEstimates cubic yards or bagsCalculates material costs
🔧 Utilities
(21K)
ad-supported
20
Timber Engineering Calculator
Timber Engineering Calculator
Timber Engineering Calculator
by V PUGAZHENTHI
$3.99

This app provides 55 calculators for various timber and civil engineering parameters, covering beam properties, stress calculations, column design, and connector loads. It supports both metric (SI) and imperial (USCS) units for comprehensive engineering analysis.

55 engineering calculatorsTimber and civil engineering parametersBeam properties calculations
🔧 Utilities
(7)
paid

FAQ about 1Rm Calculator & Strength Log

Are there free 1rm calculator & strength log apps for iPhone?
Yes — 17 of the top 1rm calculator & strength log apps we rank are free to download, including 1RM Calculator & Strength Log and 1RM Calculator.
1RM Calculator & Strength Log has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 249+ 1rm calculator & strength log apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.