531 Trainer vs 531 Strength
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
531 Trainer
Simplify your strength training with this app. It calculates your daily workouts based on your max lifts, eliminating the need for spreadsheets or manual calculations at the gym. Easily progress to the next cycle with automatic weight increments.
- Calculates daily workouts
- Automatic weight progression
- One Rep Max calculator
- Assistance work percentage calculator
- Supports kilograms or pounds
- Visual weight plate guidance
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5/3/1 made easy You no longer need to deal with clunky spreadsheets or fumble around at the gym trying to find your numbers. Everything is right on your phone and easy to access. Simply enter your max for military press, deadlift, bench press and squat once and have each day's workout calculated for you. When you finish a cycle, hitting just one button increments the weight for each of your lifts leaving you ready to quickly continue your training. Features: - One Rep Max Calculator - Assistance Work Percent Calculator - Uses Kilograms or Pounds - Program persistence - Visual information on what weight plates to use Icons Provided By Icons8 icons8.com/web-app/364/Settings icons8.com/web-app/437/Twitter icons8.com/web-app/435/Facebook icons8.com/web-app/94/Lock icons8.com/web-app/152/Unlock
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.
Screenshots
Verdict
The clearest difference is rating: 531 Strength at 4.9 against 531 Trainer's 4.3. 531 Strength also leads on ratings volume (12K vs 10) and review sentiment (94% vs 82%). 531 Trainer's advantage is in-app purchases (none vs 4) and ads (none vs shown). On price and device support 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. 531 Trainer asks for nothing beyond the download.
531 Strength holds the better App Store score, 4.9 against 4.3. That said, the two scores are not equally well evidenced: 531 Strength has 12K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 82% of 531 Trainer's written reviews are positive against 94% of 531 Strength's.
531 Trainer ships an update fortnightly, 531 Strength every 2 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.
| Parameter | 531 Trainer | 531 Strength |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (10 ratings) | 4.9 (12K ratings) — better |
| Positive reviews | 81.8% of reviews | 94.0% of reviews — better |
| Number of ratings | 10 | 12K — better |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 7.1 — better | 18.0 |
| Further details — not scored | ||
| Size | 2 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Kevin French | Henrik Jachobsen |
Customer experience
531 Trainer
531 Strength
Bugs and requests
531 Trainer
Not enough reviews yet to summarise bugs or 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
In-app purchases
531 Trainer
No 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
Questions
Is 531 Trainer free?
Is 531 Strength free?
Which has better reviews, 531 Trainer or 531 Strength?
Do 531 Trainer or 531 Strength have ads?
Which is updated more often, 531 Trainer or 531 Strength?
Other comparisons
