# Iron Plus

> Gym calculation tools for weightlifting RPE, conversions, and warm-ups. (iPhone/iPad app by Travis Napier.)

- Source: https://appshunter.io/ios/app/iron-plus/id1545857824 (this page in markdown: same URL + `.md`)
- Developer: [Travis Napier](https://appshunter.io/developer/1545857856)
- Category: Health & Fitness, Productivity
- Price: Free
- Rating: 5.00/5 from 19 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 46 MB
- Released: 2021-02-04
- Data updated: 2026-06-07
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/iron-plus/id1545857824/reviews.md

## What is Iron Plus?

All the gym calculations you need in one place.

Iron Plus is a collection of tools to help you with your lifting. 

- Use the RPE Calculator to quickly produce a chart specific to you.
- Use the Converter to convert pounds to kilos, and vice versa, and show you which plates to load on the bar. 
- Use the Warm Up Calculator to help you find the right jumps to your top set. 

Please feel free to reach out to me at napesdotnet@gmail.com or @napier.lifts on Instagram with feedback/feature suggestions!

## Key features

- RPE Calculator
- Weight Converter (lbs to kg)
- Plate loading suggestions
- Warm Up Calculator
- Customizable charts

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/iron-plus/id1545857824/reviews.md

### 5/5 — This guy squats 800

*2025-03-15*

You can trust a guy who can squat 800. Also, this has the best warmup calculator I’ve used and everything is accurate and intuitive to use.

### 5/5 — Great app and for free

*2024-02-22*

i use this all the time for powerlifting and it’s very accurate

### 5/5 — Great App!

*2023-04-24*

Amazing an extremely underrated application for body building!! I recommend!

### 5/5 — Great app

*2022-01-06*

A wonderful app that does exactly what you need. Very simple and easy to follow

### 5/5 — Exactly what I needed!

*2021-07-26*

This app was exactly what I was looking for to help with my RPE calculations. But in addition, I found the plate converter and warmup features to be great as well.

### 5/5 — Best PL App on market

*2021-02-06*

Amazing and functional app

## Frequently asked questions about Iron Plus

### What is Iron Plus?

Iron Plus is a free health and fitness app designed to assist weightlifters with various gym calculations, including RPE, weight conversions, and warm-up planning.

### How does the RPE Calculator work in Iron Plus?

The RPE Calculator in Iron Plus allows you to quickly produce a chart specific to your needs, helping you gauge your perceived exertion for different lifts.

### Can Iron Plus convert weights between pounds and kilograms?

Yes, Iron Plus includes a Converter tool that can switch between pounds and kilos. It also provides suggestions for which plates to load on the bar.

### Does Iron Plus help with warm-up routines?

Yes, the Warm Up Calculator feature in Iron Plus is designed to help you determine the appropriate weight jumps to reach your top set effectively.

### What devices is Iron Plus available on?

Iron Plus is currently supported on iPhone and iPod devices.

### How often is Iron Plus updated?

The latest version of Iron Plus is 1.2, and it was last updated on March 7, 2022. This indicates a relatively infrequent update schedule.

### Is Iron Plus suitable for beginners?

With its age rating of 4+, Iron Plus is broadly accessible. Its calculation tools can be beneficial for beginners learning about RPE and proper warm-ups.

### Does Iron Plus have ads?

No, Iron Plus does not contain advertisements.

## Version history (last 3 releases)

### 1.2 — 2022-03-07

- Updated RPE Calculation Page for more concise information
- Improved warm-up algorithm to support lower weights
- Bug fixes and minor improvements

### 1.1 — 2021-05-27

We've made quite a few changes for this update.

- Implemented a light mode! You can select to either match your system theme, or force light or dark mode.
- Created a feature to create and use a custom barbell for the unit converter (yay for squat bar users!).
- Updated UI to be more user-friendly and accessible.

### 1.0 — 2021-02-05

No release notes.

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## Related topics

[rpe calculator](https://appshunter.io/ios/topics/rpe-calculator)

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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 2026-06-07.*