# StressCalc - RPE Calculator — Banish math in the gym

> Free RPE calculator for weightlifters with visualizer and plate support. (iPhone/iPad app by Rahul Goel.)

- Source: https://appshunter.io/ios/app/stresscalc-rpe-calculator/id1587780631 (this page in markdown: same URL + `.md`)
- Developer: [Rahul Goel](https://appshunter.io/developer/1587780633)
- Category: Health & Fitness, Productivity
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 61 MB
- Languages: English
- Released: 2021-09-29
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/stresscalc-rpe-calculator/id1587780631/reviews.md

## What is StressCalc?

A beautiful, simple, user-centric app to calculate Rating of Perceived Exertion (RPE) for lifters.

Designed to be fast, no-frills, and to get the job done. Completely free, with no ads.

Includes:

- Simple design
- Visualizer for weight to put on the bar
- Support for a variety of lbs plates (45, 35, 25, etc)
- Upcoming features will be based on user feedback

## Key features

- RPE calculation
- Visual weightizer
- Supports various plate weights
- Simple, user-centric design
- No ads

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/stresscalc-rpe-calculator/id1587780631/reviews.md

### 5/5 — Solid app

*2022-04-06*

Does what it says with a clean and simple interface, free, ad-free, and doesn't collect data. Included plate calculator also a really nice touch. Thanks a bunch, Rahul! 

Minor thoughts: Would be nice if switching between lb and kg just did the conversion instead of resetting the fields. But per other review, it seems at least one other person uses the reset. 

Would be cool to see the formula or a link to the formula, maybe in the about section, though maybe I'm missing it. 

Personally, I wouldn't mind some unobtrusive, non-tracking ad banner - maybe on the bottom - if it helps cover the app store fees and maybe gets the developer some revenue.

**Developer response:** Thanks! The app now seamlessly converts lbs to kg. It made more sense to me when I started using kilo plates

### 5/5 — Kg to lb converter

*2021-11-16*

Great app. Super simple to use. Would be great to have the option to use kilos as I have to use a calculator to workout what the weight actually is. Other than that minor problem the app is perfect.

**Developer response:** Hi Texaswes912 - thanks a ton for your review and feedback. I have added kg plate support in the latest release. Thanks!  -Rahul

## Frequently asked questions about StressCalc

### What is StressCalc used for?

StressCalc is used to calculate the Rating of Perceived Exertion (RPE) for weightlifters. It simplifies the process of determining how much weight to put on the bar based on your RPE target.

### Does StressCalc have ads?

No, StressCalc is completely free and does not contain any advertisements. Users can enjoy an ad-free experience while calculating their RPE.

### What devices does StressCalc support?

StressCalc is available for iPhone and iPod devices. It is designed to be compatible with Apple's mobile operating systems.

### How accurate is StressCalc?

StressCalc provides calculations based on user input for RPE and desired weight. The app's accuracy relies on the user's correct input of RPE targets and plate weights.

### What are the key features of StressCalc?

Key features include a simple design, a visualizer for bar weight, and support for various plate weights (like 45, 35, 25 lbs). It aims to be fast and no-frills for gym users.

### Is StressCalc suitable for beginners?

Yes, StressCalc is designed to be user-centric and simple, making it suitable for beginners who are learning to use RPE in their training.

### How often is StressCalc updated?

The latest version, 3.1, was released on September 29, 2022. The developer plans to incorporate upcoming features based on user feedback.

### What is the age rating for StressCalc?

StressCalc has an age rating of 4+, indicating it is suitable for users of all ages.

## Version history (last 4 releases)

### 3.1 — 2022-09-29

Improvements based on user feedback
- Reps go till 12 & RPE increases in 0.5 increments
- e1rm shown in both kg and lbs
- Switching kg/lbs preserves entered info

### 2.1 — 2022-05-18

- Significant improvements to the design, based on user feedback. 
- Buttons are larger for easy press
- Keyboards are simpler and easy to hide
- We will never stop improving.

### 2.0 — 2021-12-03

Added kg support

### 1.0 — 2021-09-29

No release notes.

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## Related topics

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

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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 2026-06-10.*