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531 Strength

531 Strength

Keep focus on your lifts

12K ratings
277 reviews
With Ads
🌟 Lifestyle
💪 Health & Fitness
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • December 14, 2015
  • January 11, 2026

Features

Developer

Henrik Jachobsen
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iphone
ipad
🧾$1.99 - $6.99
In-App Purchase↘︎
📌Ready
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🔄6+ apps
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❓5 answered
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About

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 weights
✓Track 1RM for exercises
✓View cycle step weights
✓Round weights to available plates
✓Full overview of weights, reps, sets
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What users say

Summarized from real user reviews of 531 Strength. Based on 12K reviews and a 4.9/5 average, it highlights the 6 positives and 4 negatives reviewers mention most about this Health & Fitness app.

Positive things

  • 🚀Simple and efficient
  • 👍Intuitive interface
  • 💪Helps with strength gains
  • 🔧Customizable features
  • ⏱️Convenient timer
  • 📊Tracking and progress logging

Negative things

  • 🔢Inaccurate percentage calculations
  • 🗓️Lack of ability to plan future workouts
  • 📋Limited exercise tracking
  • 💰Paid features not worth the cost
See all reviews

What's New in 531 Strength

2.26

January 11, 2026

Thank you for using 531 Strength! This update includes: - Stability fixes - Minor UI improvements If you enjoy the app, please support the further development of the app by making an in-app purchase.

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4

Subscriptions & In-App Purchases

$1.99

Additional exercises

Keep track of more than the four big lifts

User reviews

Most RecentHighest RatedLowest Rated

Long time user of this app

Love it!
AscruggAscrugg

Fantastic App & One Suggestion

Love this app, it’s the only one I’ve ever written a review on so it’s good enough to make me go out my way to talk about how good it is. That being said I wish the note feature had an autocorrect, so if can be annoying at times rewriting the same thing while light headed after hitting a plus set. Besides that it’s incredible 9.5/10, with an autocorrect easy 10/10!
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dr eggman from mariodr eggman from mario

Best 531 App

It has all of the features you could need, in a simple straightforward app. Not hidden behind a subscription service, and you are given the choice if you want to pay a reasonable price for any of the upgrades. My only addition would be somewhere to include conditioning, but there are other apps for that. Best 531 app by far!
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Dev NielDev Niel

Every time the ask me for a review they get one star

Stop
Create ur own nicknameCreate ur own nickname

Best 531 App

Simple and affordable. Tried multiple 531 apps and this one I loved the most since.
D-BO42D-BO42
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User experience

🐞

Reported Bugs

2 issues

Rest timer stops when app is backgrounded

Bug

Plate calculator not flexible enough

Bug
✨

Requested Features

4 requests

Ability to adjust training max separately from 1RM

Feature

Option to track rep PRs and estimated 1RM

Feature

Accessory exercise tracking and planning

Feature

Sync progress across devices

Feature

FAQ

What does the 531 Strength app do?

This app helps you follow the 5/3/1 strength training program by calculating the necessary weights, reps, and sets for each exercise based on your one-rep max (1RM). It provides a clear overview of your workout progression throughout the training cycle.

How does the app calculate weights?

You input your current 1RM for each of the four main exercises. The app then uses this information to calculate the precise weights you should be lifting for each step of the 5/3/1 cycle. It also offers an option to round these calculated weights to match the plates you have available at the gym.

Is this app free to use?

The application is free to download and use, but it does offer in-app purchases. This means some features or content may require a one-time purchase to unlock.

Who is the 531 Strength app designed for?

This app is specifically created for individuals who are already familiar with the structure and principles of the 5/3/1 strength training program. It's ideal for those who need simple and quick access to their calculated workout weights without complex interfaces.

What are the key features of the 531 Strength app?

Key features include the ability to save your current 1RM for each exercise, view calculated weights for every step in the 5/3/1 cycle, and round weights to match the plates you have available. It provides a comprehensive overview of your weights, reps, and sets.