# Calculate your 1RM

> Calculate one-repetition maximum (1RM) for strength training using multiple formulas. (iPhone/iPad app by JosmanTek.)

- Source: https://appshunter.io/ios/app/calculate-your-1rm/id1222615417 (this page in markdown: same URL + `.md`)
- Developer: [JosmanTek](https://appshunter.io/developer/1216666984)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Rating: 4.70/5 from 7 App Store ratings · 14 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 9 MB
- Languages: American English, European Portuguese, European Spanish
- Released: 2017-05-05
- Data updated: 2026-08-18
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/calculate-your-1rm/id1222615417/reviews.md

## What is Calculate your 1RM?

Calculate your 1RM and percentages with the most known formulas.

1RM is the specific resistance that allows you to make only one repetition in an exercise. Determines your strength and power at a particular time. Knowing your 1RM will help you know how much weight you can lift for a given number of repetitions, it can also be used to check changes between measurements to know if the training is being effective or not.

To calculate your 1RM you need to know how much weight you can lift and how many reps you can do in a particular exercise, it is advisable to perform the calculation with less than 12 repetitions, because from there the calculations become less reliable.

Formulas used in this application:

-Epley
-Lander
-O'Conner et al
-Lombardi
-Mayhew et al
-Brzycki
-Wathen

## Key features

- 1RM calculation
- Multiple formulas (Epley, Lander, etc.)
- Track strength and power
- Monitor training effectiveness
- Supports iPhone, iPad, iPod

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Recent user reviews (10 of 14)

All indexed reviews: https://appshunter.io/ios/app/calculate-your-1rm/id1222615417/reviews.md

### 1/5 — Mayer

*2025-01-27*

Nul a iech

### 3/5 — Revivan al pirata de Culia

*2025-01-26, version 1.3.5*

Que rollo plebes

### 1/5 — Ordenar

*2024-08-22, version 1.3.5*

No se puede ordenar los ejercicios y si tienes muchos registros es difícil de encontrar.

### 4/5 — Eliminar Récord

*2024-02-26, version 1.3.5*

Me parece buena, pero no hay alguna opción para eliminar un registro en caso de haberlo digitado mal.

### 4/5 — Great, but…

*2023-09-17*

There are not many exercises to chose from. For example I do dumbbell bicep concentration curls and on the list of workouts there is not a single one that includes using dumbbells. Developer please see this and change it!

### 3/5 — Error en añadir ejercicios

*2023-05-16, version 1.3.5*

Al intentar añadir ejercicios la app no lo permite

### 1/5 — Que basura de aplicacion

*2023-04-15, version 1.3.5*

Es muy ironico la forma en la que esta app es basura JAJA. Pon el peso en 20kg a 38 reps y el 1RM que dara sera de: -1455kg 😂

### 5/5 — Excelente

*2022-06-04, version 1.3.5*

Los que comentan malas reseñas son los mismos weyes que hacen crosfit o van a un smart fit esta app esta de huevos pa alguien que en verdad la usa como tal para guardar progresía simple y eficaz la mejor app que e encontrado!

### 5/5 — MUY BUENA

*2021-12-02, version 1.3.5*

Va perfecta para calcular tus rm's y facil de usar.

### 5/5 — dédicace à schuman

*2021-11-15*

🤙

## Frequently asked questions about Calculate your 1RM

### How does Calculate your 1RM determine my 1RM?

Calculate your 1RM uses several established formulas, including Epley, Lander, O'Conner et al, Lombardi, Mayhew et al, Brzycki, and Wathen. You provide the weight lifted and the number of repetitions performed to get your estimated 1RM.

### What is the recommended number of repetitions for calculating 1RM in Calculate your 1RM?

For the most reliable calculations in Calculate your 1RM, it is advisable to perform the calculation with less than 12 repetitions. Calculations beyond this range may become less accurate.

### What devices does Calculate your 1RM support?

Calculate your 1RM is available on iPhone, iPad, and iPod devices, making it accessible for a wide range of Apple users.

### How often is Calculate your 1RM updated?

The latest version of Calculate your 1RM is 1.3.5, which was last updated on March 16, 2018. While not frequently updated recently, it remains a functional tool for its core purpose.

### What is the age rating for Calculate your 1RM?

Calculate your 1RM has an age rating of 4+, indicating it is suitable for users of all ages. The app's content is generally appropriate for a broad audience.

### Does Calculate your 1RM have ads?

No, Calculate your 1RM does not contain advertisements. This provides an uninterrupted experience for users focused on their fitness calculations.

### What is the user sentiment for Calculate your 1RM?

Users generally have a very positive sentiment towards Calculate your 1RM, reflected in its high rating of 4.8 stars from 8 ratings. This suggests users find the app accurate and useful for their training needs.

### Is Calculate your 1RM free to use?

Yes, Calculate your 1RM is free to download and use. It also offers in-app purchases, which may provide additional features or functionality.

## Version history (last 5 releases)

### 1.3.5 — 2018-03-16

This app has been updated by Apple to display the Apple Watch app icon.

Bug fixes and performance improvements.

### 1.3.4 — 2018-02-16

Bug fixes.

### 1.3.3 — 2017-11-28

Bug fixes.

### 1.3.2 — 2017-11-27

Bug fixes.

### 1.3.1 — 2017-11-13

Bug fixes.

## Apps similar to Calculate your 1RM

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## More apps by JosmanTek

- [Macros - Calorie Counter](https://appshunter.io/ios/app/macros-calorie-counter/id1216666985)

All apps by JosmanTek: https://appshunter.io/developer/1216666984

## Related topics

[1rm](https://appshunter.io/ios/topics/1rm) · [1rm calculator](https://appshunter.io/ios/topics/1rm-calculator) · [1rm weight lifting rep max](https://appshunter.io/ios/topics/1rm-weight-lifting-rep-max)

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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 2026-08-18.*