# 1RM 계산기 - 1RM Calculator

> Calculate one-rep max (1RM) using weight and repetitions with the Epley formula. (iPhone/iPad app by JISU LEE.)

- Source: https://appshunter.io/ios/app/1rm-1rm-calculator/id6695736929 (this page in markdown: same URL + `.md`)
- Developer: [JISU LEE](https://appshunter.io/developer/1676174439)
- Category: Health & Fitness, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 0 MB
- Languages: American English, Korean
- Released: 2024-09-18
- Data updated: 2026-08-17
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/1rm-1rm-calculator/id6695736929/reviews.md

## What is 1RM 계산기?

중량과 반복 횟수를 입력하면 Epley 추정법을 사용해 1RM(최대 반복 1회 중량)을 계산해요.

## Key features

- 1RM calculation
- Epley formula
- Weight input
- Repetition input
- Strength estimation

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/1rm-1rm-calculator/id6695736929/reviews.md

### 5/5 — 👍

*2024-10-13*

깔꼼

## Frequently asked questions about 1RM 계산기

### How does 1RM Calculator estimate my 1RM?

1RM Calculator uses the Epley formula to estimate your one-rep max. You provide the weight you lifted and the number of repetitions you completed for that weight.

### What devices is 1RM Calculator available on?

1RM Calculator is available on iPhone and iPad devices.

### Is 1RM Calculator free to use?

Yes, 1RM Calculator is completely free to download and use. There are no in-app purchases or advertisements.

### How often is 1RM Calculator updated?

The app was last updated on October 1, 2024, with version 1.2. Updates are released to improve functionality and add new features.

### What is the age rating for 1RM Calculator?

1RM Calculator has an age rating of 4+, making it suitable for users of all ages.

### Does 1RM Calculator require an internet connection?

The provided information does not specify offline capabilities. However, as a calculation tool, it is likely to function without an internet connection.

### Can 1RM Calculator track my workout progress over time?

The current description focuses on 1RM calculation. It does not mention features for tracking workout history or progress over time.

## Version history (last 3 releases)

### 1.2 — 2024-10-01

- 숫자 키패드로 변경하였어요.
- 버튼을 누르기 쉽도록 개선했어요.

### 1.1 — 2024-09-23

- 20RM까지 확인 가능해요.
- 다크모드 사용이 가능하도록 보완하였어요.
- 일부 사용성을 개선했어요.

### 1.0 — 2024-09-18

No release notes.

## Apps similar to 1RM 계산기

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [1RM Calculator](https://appshunter.io/ios/app/1rm-calculator/id1566775126) | 4.9 (109) | Free | Health & Fitness |
| [RM Calculator(BP.SQ.DL)](https://appshunter.io/ios/app/rm-calculatorbpsqdl/id6738381925) | — | Free | Health & Fitness |
| [1RM Wizard](https://appshunter.io/ios/app/1rm-wizard/id6740254948) | — | Free | Health & Fitness |
| [1RM Percentage Calculator](https://appshunter.io/ios/app/1rm-percentage-calculator/id6451496905) | 5.0 (3) | Free | Health & Fitness |
| [1Rep: 1RM Calculator & PR Log](https://appshunter.io/ios/app/1rep-1rm-calculator-and-pr-log/id6763015434) | — | Free | Health & Fitness |
| [1RM - One Rep Max Calculator](https://appshunter.io/ios/app/1rm-one-rep-max-calculator/id6480014506) | — | Free | Health & Fitness |

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All apps by JISU LEE: https://appshunter.io/developer/1676174439

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*