# JRS Calc

> Pressure vessel calculation tool for thickness, pressure, and lifespan. (iPhone/iPad app by The National Board of Boiler and Pressure Vessel Inspectors.)

- Source: https://appshunter.io/ios/app/jrs-calc/id1555776065 (this page in markdown: same URL + `.md`)
- Developer: [The National Board of Boiler and Pressure Vessel Inspectors](https://appshunter.io/developer/1555776367)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 4 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 9 MB
- Languages: English
- Released: 2021-04-08
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/jrs-calc/id1555776065/reviews.md

## What is JRS Calc?

JRS Calculator to calculate the minimum thickness, maximum pressure, and remaining life of a pressure vessel

## Key features

- Calculate minimum thickness
- Determine maximum pressure
- Estimate remaining life
- Pressure vessel engineering tool


## Frequently asked questions about JRS Calc

### What is JRS Calc used for?

JRS Calc is a utility app designed to calculate the minimum thickness, maximum pressure, and remaining life of pressure vessels. It's a specialized tool for professionals in the field.

### Is JRS Calc free to use?

Yes, JRS Calc is available for free. There are no costs associated with downloading or using its core functionalities.

### What devices is JRS Calc compatible with?

JRS Calc is designed for iOS devices, specifically iPhones and iPods. It is not currently available for Android or other platforms.

### How accurate are the calculations in JRS Calc?

The app's accuracy depends on the input data provided by the user. It is developed by The National Board of Boiler and Pressure Vessel Inspectors, suggesting a focus on industry standards.

### When was JRS Calc last updated?

The latest version of JRS Calc was released on April 21, 2021. The app was initially released on April 8, 2021.

### What is the age rating for JRS Calc?

JRS Calc has an age rating of 4+, making it suitable for a wide range of users, though its technical nature targets professionals.

### Does JRS Calc have ads?

No, JRS Calc does not contain advertisements. Users can utilize the app without interruptions from ads.

### What is the user feedback on JRS Calc?

JRS Calc has received very positive user feedback, with an average rating of 5.0 stars from 4 ratings. This indicates high satisfaction among its current users.

## Version history (last 2 releases)

### 0.0.11 — 2021-04-21

Updated App Icon and License Agreement

### 0.0.10 — 2021-04-08

No release notes.

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| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [Pressure Vessel Thickness Pro](https://appshunter.io/ios/app/pressure-vessel-thickness-pro/id1492059118) | 1.0 (1) | $3.99 | Utilities |
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| [Heat Exchanger Performance](https://appshunter.io/ios/app/heat-exchanger-performance/id499929799) | — | $4.99 | Utilities |
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| [Thermodynamics Calculator](https://appshunter.io/ios/app/thermodynamics-calculator/id521684348) | 4.0 (28) | $1.99 | Utilities |

## More apps by The National Board of Boiler and Pressure Vessel Inspectors

- [JRS Utilities](https://appshunter.io/ios/app/jrs-utilities/id6748930082)

All apps by The National Board of Boiler and Pressure Vessel Inspectors: https://appshunter.io/developer/1555776367

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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.*