Comparison

531 Strength vs Physique Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

531 Strength

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.

Highlights
  • Calculate 5/3/1 weights
  • Track 1RM for exercises
  • View cycle step weights
  • Round weights to available plates
  • Full overview of weights, reps, sets
Features
Read full description

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.

About

Physique Tracker

Organize and track your fitness journey visually with this bodybuilding app. It allows you to categorize photos and videos, add tags and notes, and easily search for specific progress markers. Keep all your gym-related media in one place to monitor your physique development.

Highlights
  • Organize photos and videos by groups
  • Add tags and notes to media
  • Searchable media library
  • Mark items as favorite
  • Pin items and groups
  • Add media from device library
Read full description

Save time and energy by using Physique Tracker to organize all your exercise, fitness, bodybuilding, posing photos and videos. (Anything gym related!). Track your progress visually toward your bodybuilding goals with Physique Tracker. This one-of-a-kind bodybuilding app organizes your photos and videos into groups, and you can add tags and notes to each item for easy searching and comparison. You've never seen anything like Physique Tracker before. Take a photo or video with the Physique Tracker camera, categorize it into a Group, add some Tags and Notes, and save. Now it's organized! Also, you have the option to mark any photo, video, or Group as a "Favorite", Pin items inside of Group so they show up first inside of that Group, or even Pin a whole Group in your Organizer so it shows on top. And you have full flexibility and control. Add Groups any time, rename them, delete them. Move photos or videos from one Group to another, edit Tags or Notes any time, or easily delete items. Want to add some old photos and videos of those awesome poses, personal record lifts, or before and afters? No problem - you can easily add them from your device's Photo Library. And you'll never waste time trying to find a specific photo or video. With our Search function, you can instantly locate any item inside of Physique Tracker by searching for Tags, Notes, or both. In short, we offer so many ways to organize, locate, and view your fitness photos and videos. Once you start using Physique Tracker you'll never stop. It's that useful. Physique Tracker isn't just a photo app. This is a bodybuilding app that saves you time and keeps you on track towards improving your physique. We designed this app specifically for everyone in the bodybuilding community, from open bodybuilders to classic physique, fitness/figure/wellness, and everyone in between. We also NEVER see your photos or videos; everything is saved on your phone for your eyes only. We don't save your photos and video to a database. We have no idea what photos and videos you are taking, how you are tagging and notating them. Privacy matters. We also don't sell any user data and don't have any ads in the app. That's not cool. Try Physique Tracker now and up your progress tracking game! Everybody's doing it! Physique Tracker SUPPORT https://www.phystech.llc/help/ Physique Tracker PRIVACY POLICY https://www.phystech.llc/privacy-policy/ Physique Tracker TERMS OF USE https://www.phystech.llc/terms-of-use/

Screenshots

531 Strength4 screens
Physique Tracker4 screens

Verdict

The call

The clearest difference is update cadence: Physique Tracker at every 2 days against 531 Strength's every 2 months. Physique Tracker also leads on iOS requirement (16.0 vs 18.0). 531 Strength's advantage is ratings volume (12K vs 2). On price, rating, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. 531 Strength sells 4 one-off in-app purchases and Physique Tracker sells 8 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for 531 Strength against 5.0 for Physique Tracker. That said, the two scores are not equally well evidenced: 531 Strength has 12K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

531 Strength ships an update every 2 months, Physique Tracker every 2 days. The most recent releases landed on October 29, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
531 Strength versus Physique Tracker: the parameters behind the verdict, then further details
Parameter531 StrengthPhysique Tracker
PriceFreeFree
Rating4.9 (12K ratings)5.0 (2 ratings) — better
Positive reviews94.0% of reviews—
Number of ratings12K — better2
Update frequencyEvery 2 monthsEvery 2 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS18.016.0 — better
Further details — not scored
Size26 MB24 MB
Age rating4+4+
DeveloperHenrik JachobsenPhys Tech LLC

Customer experience

531 Strength

All ratings11,645 ratings
Positive98.0%
Neutral1.2%
Negative0.8%
Written reviews282 reviews
Positive94.0%
Neutral2.8%
Negative3.2%

Physique Tracker

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

531 Strength

Reported bugs

2 issues
  • Rest timer stops when app is backgrounded
  • Plate calculator not flexible enough

Requested features

4 requests
  • Ability to adjust training max separately from 1RM
  • Option to track rep PRs and estimated 1RM
  • Accessory exercise tracking and planning
  • Sync progress across devices

Physique Tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

531 Strength

One-time4
  • Additional exercises$1.99
  • Adjustable set$1.99
  • Plate calculator$1.99
Show 1 more
  • Progress log$6.99
8 purchases

Physique Tracker

Subscriptions8
  • Weekly Pro Plan3 Days trial$2.997 Days
  • Monthly Pro Plan3 Days trial$7.991 Month
  • Weekly Pro Plan3 Days trial$7.997 Days
Show 5 more
  • Monthly Pro Plan3 Days trial$12.491 Month
  • 3-Month Pro Plan3 Days trial$12.993 Months
  • 3-Month Pro Plan3 Days trial$15.993 Months
  • Annual Pro Plan3 Days trial$29.991 Year
  • Annual Pro Plan3 Days trial$49.991 Year

Questions

Is 531 Strength free?
531 Strength is free to download, with in-app purchases available.
Is Physique Tracker free?
Physique Tracker is free to download, with in-app purchases available.
Which has better reviews, 531 Strength or Physique Tracker?
Physique Tracker is rated higher. 531 Strength averages 4.9 out of 5 from 12K ratings, while Physique Tracker averages 5.0 from 2 ratings.
Do 531 Strength or Physique Tracker have ads?
Both 531 Strength and Physique Tracker show ads.
Which is updated more often, 531 Strength or Physique Tracker?
531 Strength ships an update every 2 months, and Physique Tracker every 2 days. Most recently, 531 Strength was updated on October 29, 2026 and Physique Tracker on September 23, 2026.

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