# Rep Max Calculator vs 1RM Calculator

The clearest difference is ratings volume: 1RM Calculator at 126 against Rep Max Calculator's 3. 1RM Calculator also leads on review sentiment (100% vs 80%). Rep Max Calculator's advantage is iOS requirement (10.0 vs 15.0). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Rep Max Calculator sells 3 in-app purchases, starting at $9.99 per month and 1RM Calculator sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Rep Max Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: 1RM Calculator has 126 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 80% of Rep Max Calculator's written reviews are positive against 100% of 1RM Calculator's, so the app with the better star average is not the one people write more warmly about.

Rep Max Calculator ships an update every 7 months, 1RM Calculator every 4 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Rep Max Calculator | 1RM Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rep-max-calculator/id1103321723/reviews)** | [4.8 (126 ratings)](https://appshunter.io/ios/app/1rm-calculator/id1566775126/reviews) |
| Number of ratings | 3 | **126** |
| Positive reviews | 80.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 28 MB | 28 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Roman Shimchenko](https://appshunter.io/developer/916564826) | [Yuri Koshiishi](https://appshunter.io/developer/1566775128) |

## What reviewers say

### Rep Max Calculator

[App page](https://appshunter.io/ios/app/rep-max-calculator/id1103321723)

Calculate your maximum weight for a specific number of repetitions. Ideal for powerlifting, bodybuilding, and fitness enthusiasts, it supports calculations for 1 to 40 repetitions based on the weight lifted.

**Highlights:** Calculate 1-rep max, Supports 1-40 repetitions, Weight-based calculation, Powerlifting, bodybuilding, fitness, User-friendly interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $9.99 | per month |
| Subscription for year | $99.99 | per year |
| Save Settings | $1.99 | one-time |


### 1RM Calculator

[App page](https://appshunter.io/ios/app/1rm-calculator/id1566775126)

Easily calculate your one-rep max (1RM) strength with this app. It supports RPE input and allows you to estimate rep maxes based on your 1RM. Track your progress by saving your 1RM history for different exercises.

**Highlights:** 1RM calculation with RPE, Rep max estimation, Save 1RM history, Customizable exercises, Dark theme

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Rep Max Pro Monthly | $1.99 | per month |
| 1 Rep Max Pro Annual | $9.99 | per year |
| 1 Rep Max Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Rep Max Calculator free?

Rep Max Calculator is free to download, with in-app purchases available.

### Is 1RM Calculator free?

1RM Calculator is free to download, with in-app purchases available.

### Which has better reviews, Rep Max Calculator or 1RM Calculator?

Rep Max Calculator is rated higher. Rep Max Calculator averages 5.0 out of 5 from 3 ratings, while 1RM Calculator averages 4.8 from 126 ratings.

### Do Rep Max Calculator or 1RM Calculator have ads?

Neither Rep Max Calculator nor 1RM Calculator shows ads.

### Which is updated more often, Rep Max Calculator or 1RM Calculator?

Rep Max Calculator ships an update every 7 months, and 1RM Calculator every 4 months. Most recently, Rep Max Calculator was updated on October 26, 2026 and 1RM Calculator on October 25, 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.*