Best Simple One alternatives: apps like Simple One-Rep-Max Calculator

10+ similar apps compared and reviewed

4.5 avg rating
9 free apps
Updated October 2026

Looking for something like Simple One? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

Top Alternatives to Simple One

Fitness Challenge Tracker#1

Fitness Challenge Tracker by UX First

Move, get fit & lose weight
4.9(8 ratings)
$0.99
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Monitor your progress towards monthly Apple Watch Fitness challenges and earn collectible badges. This app integrates with Apple Health to provide daily insights and track your efforts, designed for simplicity and privacy.

1RM Percentage Calculator#2

1RM Percentage Calculator by Jonathan McDill

Percentage-Based Workout Util
5.0(3 ratings)
FreeIn-App Purchases
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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.

My 1 Rep Max#3

My 1 Rep Max by James T. Constant

1 Rep Max Calculator
4.4(119 ratings)
FreeIn-App Purchases
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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 apps like Simple One

4
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
(183)
free with in-app purchases
5
1RM Calculator
1RM Calculator
1RM Calculator
One Rep Max & RPE Calculator
Free

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.

1RM calculation with RPERep max estimationSave 1RM history
💪 Health & Fitness
(116)
free with in-app purchases
6
Barbell Plate Calculator
Barbell Plate Calculator
Barbell Plate Calculator
Plate math made simple
Free

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.

Plate calculation for target weightReverse calculation for current bar weightCustomizable bar weight
💪 Health & Fitness
(285)
free with in-app purchases
7
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
(12K)
free with in-app purchases
8
JuggernautAI
JuggernautAI
JuggernautAI
Strength Training Workouts
Free

This app uses AI to create personalized strength training programs for powerlifting and powerbuilding. It adapts to your feedback and goals, optimizing volume, frequency, and exercise selection for maximum strength gains and recovery.

AI-generated personalized workout plansPowerlifting and Powerbuilding goal focusAdaptive training based on real-time feedback
💪 Health & Fitness
(5.7K)
subscription
9
APECS: AI Posture Evaluation
APECS: AI Posture Evaluation
APECS: AI Posture Evaluation
Posture Evaluation System
Free

Analyze your posture using your device's camera for improved back health and body shape. It offers detailed assessments of various body parts, including specialized tests for symmetry and movement, with options for both automatic and manual tracking.

Camera-based posture analysisSpecialized symmetry testsRange of motion evaluation
💪 Health & Fitness
(7)
free with in-app purchases
10
Bar Is Loaded - Gym Calculator
Bar Is Loaded - Gym Calculator
Bar Is Loaded - Gym Calculator
It's leg day, not brain day.
Free

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.

Plate loading calculator (KG/LB)Customizable barbell and plate inventoryReverse calculator for adding plates
💪 Health & Fitness
(512)
free with in-app purchases