531 Strength 4+

Keep focus on your lifts

Henrik Jachobsen

Designed for iPad

    • 4.9 • 9.9K Ratings
    • Free
    • Offers In-App Purchases



Simple and effective app for taking the math out of working out, so you can keep focus on your lifts.

Makes it quick and easy to get a full overview of all weights, reps and sets based off your 1RM when you’re following the 5/3/1 program.

- Save your current 1 RM for each of the four exercises

- View calculated weights for each step in the cycle

- Round the weight to match the plates you have available

This app is made for people who are familiar with the structure of the 5/3/1 program and who needs simple access to the calculated weights for each exercise.

What’s New

Version 2.22

Thank you for using 531 Strength!

This update includes:
- Minor UI improvements

If you enjoy the app, please support the further development of the app by making an in-app purchase.

Ratings and Reviews

4.9 out of 5
9.9K Ratings

9.9K Ratings

Shadowlesson ,

Simple, solid, useful.

The criticism I have to offer is that the app doesn't have a feature which generates which weight plates to use. I've used apps in the past that automatically displayed which weights you needed on the bar for each set like a 45, a 10, a 5, a 2.5 and a 1.25. Barbell math is easy enough but it's nice to just slap on what it tells you to during warmup sets. The only other thing I have is that the rest timer does not continue counting down if you leave the app, so if you check a Facebook notification during a 3 minute rest or leave the app to check that text you got during your last set, your rest timer is jacked. Fix those two things and the app would be nearly perfect.

10/10 would download again. lol.

tbeezer12 ,

Incredibly functional app for 5/3/1

First time making a review because this app deserves 5 stars. I even bought the in app purchases just for extra convenience and to help the developer. I was using spreadsheets and print outs for a year for 5/3/1 and this app eliminated that. The ability to track all of your lifts over time with the calendar is by far the best feature. It’s great to easily look back at all of my lifts and notes for each day and to track my estimated 1RM in the graphs. Only thing I wish this app had was a way to keep track of what cycle you’re on and what 1RM you’ve used in past cycles so you don’t accidentally set the wrong one. Besides that this app is basically perfect.

sxezskoz ,

The perfect 531 companion

After trying about a dozen solutions of the years, I finally discovered this app a month ago and it is by far the best, most efficient, and most intuitive app for 531 tracking. The design looks great and feels good to use. The in-app purchased are reasonably priced, which brought the total app cost to around $10 for me- which is well worth something of such elegant design. I have no complaints so far with it, perhaps maybe it’d be nice to have a few colorways that swap the red for other colors? But I’d be happy with its design for the rest of my life. Thank you for this app!

App Privacy

The developer, Henrik Jachobsen, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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