Iron Plus 4+

Travis Napier

    • 5.0 • 17 Ratings
    • Free

iPhone Screenshots


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 or @napier.lifts on Instagram with feedback/feature suggestions!

What’s New

Version 1.2

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

Ratings and Reviews

5.0 out of 5
17 Ratings

17 Ratings

Jtorres2181 ,

Exactly what I needed!

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.

hdhdudhevjfjf ,

Great app and for free

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

jenasdfgh1234lolha ,

Great app

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

App Privacy

The developer, Travis Napier, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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