# 531 Strength vs 1RM Weight Lifting Rep Max

The clearest difference is review sentiment: 531 Strength at 94% against 1RM Weight Lifting Rep Max's 50%. 531 Strength also leads on rating (4.9 vs 2.3) and ratings volume (12K vs 3). 1RM Weight Lifting Rep Max's advantage is ads (none vs shown) and iOS requirement (11.0 vs 18.0). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. 531 Strength sells 4 one-off in-app purchases and 1RM Weight Lifting Rep Max sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

531 Strength holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: 531 Strength has 12K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 94% of 531 Strength's written reviews are positive against 50% of 1RM Weight Lifting Rep Max's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 531 Strength | 1RM Weight Lifting Rep Max |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (12K ratings)](https://appshunter.io/ios/app/531-strength/id1062989244/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/1rm-weight-lifting-rep-max/id1466865497/reviews) |
| Number of ratings | **12K** | 3 |
| Positive reviews | **94.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 26 MB | 18 MB |
| Requires iOS | 18.0 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Henrik Jachobsen](https://appshunter.io/developer/497731838) | [Maksym Kravchenko](https://appshunter.io/developer/1200330314) |

## What reviewers say

### 531 Strength

[App page](https://appshunter.io/ios/app/531-strength/id1062989244)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Additional exercises | $1.99 | one-time |
| Adjustable set | $1.99 | one-time |
| Plate calculator | $1.99 | one-time |
| Progress log | $6.99 | one-time |

**What reviewers like**

- 🚀 Simple and efficient
- 👍 Intuitive interface
- 💪 Helps with strength gains
- 🔧 Customizable features
- ⏱️ Convenient timer

**What reviewers complain about**

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

**Reported bugs**

- Rest timer stops when app is backgrounded
- Plate calculator not flexible enough

**Requested features**

- 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


### 1RM Weight Lifting Rep Max

[App page](https://appshunter.io/ios/app/1rm-weight-lifting-rep-max/id1466865497)

This app calculates your personalized 1 Rep Max for weightlifting based on your performance type. Log your workouts, track progress with charts, and discover personalized formulas for maximum accuracy. Upgrade to Pro for full functionality.

**Highlights:** Personalized 1 Rep Max calculation, Strength, Midrange, Endurance, Custom types, Log weight lifted by percentage, Track progress with history, Analyze progress with chart diagrams, History module for past workouts

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1RM Pro (1 Month) | $0.99 | per month |


## Frequently asked questions

### Is 531 Strength free?

531 Strength is free to download, with in-app purchases available.

### Is 1RM Weight Lifting Rep Max free?

1RM Weight Lifting Rep Max is free to download, with in-app purchases available.

### Which has better reviews, 531 Strength or 1RM Weight Lifting Rep Max?

531 Strength is rated higher. 531 Strength averages 4.9 out of 5 from 12K ratings, while 1RM Weight Lifting Rep Max averages 2.3 from 3 ratings.

### Do 531 Strength or 1RM Weight Lifting Rep Max have ads?

531 Strength shows ads; 1RM Weight Lifting Rep Max does not.

### Which is updated more often, 531 Strength or 1RM Weight Lifting Rep Max?

531 Strength ships an update every 2 months, and 1RM Weight Lifting Rep Max every 2 months. Most recently, 531 Strength was updated on November 11, 2026 and 1RM Weight Lifting Rep Max on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*