531 Strength vs Stronger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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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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.
Stronger
This fitness tracker automatically progresses your exercises after each workout, helping you build strength consistently. Customize sets, reps, and weights for linear or exponential progression without needing spreadsheets. See your progress over time and achieve your fitness goals.
- Automatic exercise progression
- Customizable sets, reps, and weights
- Linear and exponential progression options
- No spreadsheets required
- Track workout history and statistics
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No frills fitness tracker, with a focus on automatic progression. After finishing a workout session, every exercise is automatically progressed based on each exercise's Progression settings. If you stay consistent and continue to work on these exercises, you will get stronger. In time it'll be hard to believe how far you've come. Exercises are customizable. Can do time based sets, rep based sets, weighted or not and you can progress exercises based on time, reps or weight. Progression can be linear or exponential. No more fussing with spreadsheets. Just set up your routines and keep at it and you'll see results. Exercise history, graphs, statistics and more coming soon. Any questions, bugs, suggestions or feedback please don't hesitate to email at feedback@strangemesa.com
Screenshots
Verdict
The clearest difference is in-app purchases: Stronger at none against 531 Strength's 4. Stronger also leads on ads (none vs shown). 531 Strength's advantage is ratings volume (12K vs 1). On price, rating, device support and iOS requirement 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
Both are free to download. 531 Strength sells 4 one-off in-app purchases. Stronger asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.9 for 531 Strength against 5.0 for Stronger. That said, the two scores are not equally well evidenced: 531 Strength has 12K ratings behind it against 1, so its average is the more settled of the two.
| Parameter | 531 Strength | Stronger |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (12K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 94.0% of reviews | — |
| Number of ratings | 12K — better | 1 |
| Update frequency | Every 2 months | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Henrik Jachobsen | Strange Mesa |
Customer experience
531 Strength
Stronger
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
Stronger
Not enough reviews yet to summarise bugs or requests.
In-app purchases
531 Strength
- Additional exercises$1.99
- Adjustable set$1.99
- Plate calculator$1.99
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- Progress log$6.99
Stronger
No in-app purchases
