---
title: "1RM Calculator - One Rep Max — App Overview"
url: https://marlvel.ai/apps/1rm-calculator-one-rep-max
category: Health & Fitness
developer: David Bai
platforms: ios, android
rating: 4.8 (523 ratings)
pricing: freemium
report_level: overview
generated: 2026-04-19
last_verified: "2026-04-19T10:36:11.250Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** While the app provides useful strength estimation tools, recent user feedback indicates significant technical issues regarding the activation of Pro version features.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Health & Fitness |
| Rating | 4.8 ★ (523) |
| Pricing | freemium |
| Platforms | iOS, Android |
| Latest Version (iOS) | 4.5 |
| Latest Version (Android) | 1.6.2 |
| Developer | David Bai |

<!-- SECTION: Summary -->
## What is 1RM Calculator - One Rep Max?

1RM Calculator is a fitness utility designed to estimate one-rep maximums based on user-inputted weight and repetition data. It allows strength athletes to compare different rep schemes and track progress over time. The app is notable for its simple interface and mathematical approach to strength gauging.

<!-- SECTION: Key Features -->
## Key Features

- **1RM Estimation**: Calculates estimated one-rep maximums based on weight and repetition inputs.
- **Progress Tracking**: Allows users to save lifts and view historical data through lists and charts.
- **Pro Version Features**: Offers an ad-free experience, historical tracking, and access to additional calculation formulas.

<!-- SECTION: Target Audience -->
## Who is it for?

Strength training athletes and weightlifters looking to track and estimate their maximum lifting capacity.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/1rm-calculator-one-rep-max/id681279192?uo=4)
- [Google Play](https://play.google.com/store/apps/details?id=com.yurikoshiishi.one_rm_calculator&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/apps/1rm-calculator-one-rep-max)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/1rm-calculator-one-rep-max).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*