# oneRM calculator(1RM) — Simple 1RM calculator

> Simple 1RM calculator (iPhone/iPad app by Hanyu Seo.)

- Source: https://appshunter.io/ios/app/onerm-calculator1rm/id6768949745 (this page in markdown: same URL + `.md`)
- Developer: [Hanyu Seo](https://appshunter.io/developer/1896618234)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 4 MB
- Languages: English, Korean
- Released: 2026-05-15
- Data updated: 2026-05-21
- User reviews in markdown: https://appshunter.io/ios/app/onerm-calculator1rm/id6768949745/reviews.md

## What is oneRM calculator(1RM)?

You can estimate your 1RM based on the weight and reps you usually train with.

In addition to the basic 1RM calculation based on the Brzycki formula, this calculator also supports more detailed and accurate 1RM estimates for squat, bench press, and deadlift using NSCA-based formulas.

It also supports 1RM calculation for exercises that require bodyweight to be included, such as weighted pull-ups.


## Version history (last 2 releases)

### 1.1 — 2026-05-19

connect admob

### 1.0 — 2026-05-15

No release notes.

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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 2026-05-21.*