# 1RM Calculator vs Platform Manager

The clearest difference is in-app purchases: Platform Manager at none against 1RM Calculator's 3. Platform Manager also leads on update cadence (every 2 weeks vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 1RM Calculator sells 3 in-app purchases, starting at $1.99 per month. Platform Manager asks for nothing beyond the download.

1RM Calculator ships an update every 4 months, Platform Manager every 2 weeks. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | 1RM Calculator | Platform Manager |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (116 ratings)](https://appshunter.io/ios/app/1rm-calculator/id1566775126/reviews)** | — |
| Number of ratings | **116** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 113 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Yuri Koshiishi](https://appshunter.io/developer/1566775128) | [Michael Ruland](https://appshunter.io/developer/1721004476) |

## What reviewers say

### 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 |


### Platform Manager

[App page](https://appshunter.io/ios/app/platform-manager/id6792543291)

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

**In-app purchases:** none


## Frequently asked questions

### Is 1RM Calculator free?

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

### Is Platform Manager free?

Platform Manager is free to download, with no in-app purchases.

### Do 1RM Calculator or Platform Manager have ads?

Neither 1RM Calculator nor Platform Manager shows ads.

### Which is updated more often, 1RM Calculator or Platform Manager?

1RM Calculator ships an update every 4 months, and Platform Manager every 2 weeks. Most recently, 1RM Calculator was updated on October 16, 2026 and Platform Manager on October 9, 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.*