# 1RM Calculator vs 筋トレ突破LOG

The clearest difference is update cadence: 筋トレ突破LOG at every 2 days against 1RM Calculator's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 1RM Calculator sells 3 in-app purchases, starting at $1.99 per month and 筋トレ突破LOG sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

1RM Calculator ships an update every 4 months, 筋トレ突破LOG every 2 days. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 1RM Calculator | 筋トレ突破LOG |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 28 MB | 56 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yuri Koshiishi](https://appshunter.io/developer/1566775128) | [Yuta Fujita](https://appshunter.io/developer/1876803782) |

## 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 |


### 筋トレ突破LOG

[App page](https://appshunter.io/ios/app/log/id6759091640)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Proプラン（月額） | $2.99 | per month |
| Proプラン（月額） | $24.99 | per year |


## Frequently asked questions

### Is 1RM Calculator free?

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

### Is 筋トレ突破LOG free?

筋トレ突破LOG is free to download, with in-app purchases available.

### Do 1RM Calculator or 筋トレ突破LOG have ads?

Neither 1RM Calculator nor 筋トレ突破LOG shows ads.

### Which is updated more often, 1RM Calculator or 筋トレ突破LOG?

1RM Calculator ships an update every 4 months, and 筋トレ突破LOG every 2 days. Most recently, 1RM Calculator was updated on October 20, 2026 and 筋トレ突破LOG on October 15, 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.*