# Pressure Vessel Pro — Engineering Calculations

> Engineering app for pressure vessel stress calculations and ASME code compliance. (iPhone/iPad app by J.R.Hobbs.)

- Source: https://appshunter.io/ios/app/pressure-vessel-pro/id535696875 (this page in markdown: same URL + `.md`)
- Developer: [J.R.Hobbs](https://appshunter.io/developer/395110523)
- Category: Utilities, Reference
- Price: $5.99
- Rating: 4.50/5 from 2 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 10 MB
- Languages: American English
- Released: 2012-08-10
- Data updated: 2026-07-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/pressure-vessel-pro/id535696875/reviews.md

## What is Pressure Vessel Pro?

Pressure Vessel Pro - Pressure vessel calculations for iOS.  
The easiest way to do basic pressure vessel stress calculations.  Simply select from the available geometries, enter in the required dimensions and the answers will be generated complete with the formulae.  You can also easily print or email a PDF of your results along with a schematic of the pressure vessel. 

Pressure Vessel Pro Features: 
- Universal - designed for use on all sizes of iPhone, iPod Touch, and iPad 
- Share or print a PDF report of the results
- Extremely flexible unit system. Choose Metric, English or mix and match units.
- Save multiple cases for later reference
- Tap a cell to show detail and formulae

The properties calculated include are: 
• Longitudinal Stress 
• Hoop Stress
• Shear Stress
• Volume
• ASME Boiler & Pressure Vessel Code Design Thickness
• ASME Boiler & Pressure Vessel Code Design Pressure 

Pressure Vessel Pro includes the Following Integrated Calculations: 
• Vertical tanks 
• Horizontal tanks
• Spherical tanks

Pressure Vessel Pro includes the Following Component Stress Calculations: 
• Cylinders
• Hemispherical Heads and Tanks
• Elliptical Heads
• Torispherical Heads

Pressure Vessel Pro includes the Following ASME Boiler and Pressure Vessel Code Section VIII, Division I Design Calculations:
• Cylinder Thickness
• Cylinder Pressure
• Hemispherical Heads and Tanks Thickness
• Hemispherical Heads and Tanks Pressure
• 2:1 Elliptical Head Thickness
• 2:1 Elliptical Head Pressure
• ASME (dished) Heads Thickness
• ASME (dished) Heads Pressure

Check out our other engineering apps by searching the iTunes store for:
• Moments of Inertia
• Mohr's Circle
• Stress Concentrations Pro
• Stress Intensity Factors Pro
or search J.R.Hobbs to see them all.

## Key features

- Pressure vessel stress calculations
- ASME Boiler & Pressure Vessel Code compliance
- Support for vertical, horizontal, and spherical tanks
- Component stress calculations (cylinders, heads)
- Generate and share PDF reports
- Flexible unit system (Metric/English)
- Save multiple calculation cases

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/pressure-vessel-pro/id535696875/reviews.md

### 3/5 — Units of operations

*2015-03-24*

All operations there is not a unit. I don't know when I'm working with SI unit (MPa, mm) or with UK unit (psi, inch).

### 3/5 — Units & Ext Pressure

*2014-01-18*

REALLY needs measurement units and option for external pressure adding, otherwise a potentially useful little app

### 4/5 — Sr Equipment Inspector

*2013-07-03*

I use this app for double checking ASME code shop fabrication when performing QA/QC for my company and it had made my job quicker and more productive, great app, thanks.

## Frequently asked questions about Pressure Vessel Pro

### What types of pressure vessels can Pressure Vessel Pro calculate?

Pressure Vessel Pro supports calculations for vertical tanks, horizontal tanks, and spherical tanks. It also includes component stress calculations for cylinders and various types of heads like hemispherical, elliptical, and ASME dished heads.

### Does Pressure Vessel Pro calculate thickness and pressure based on ASME standards?

Yes, Pressure Vessel Pro includes integrated calculations for ASME Boiler and Pressure Vessel Code Section VIII, Division I. This covers cylinder thickness and pressure, hemispherical heads and tanks thickness and pressure, and 2:1 elliptical head thickness and pressure.

### Can I share my calculation results from Pressure Vessel Pro?

Absolutely. Pressure Vessel Pro allows you to easily print or email a PDF of your calculation results. This report also includes a schematic of the pressure vessel for clear visualization.

### What units does Pressure Vessel Pro support?

Pressure Vessel Pro features an extremely flexible unit system. You can choose to use Metric units, English units, or even mix and match units as needed for your calculations.

### How does Pressure Vessel Pro display detailed information?

When you tap on a specific calculation cell within Pressure Vessel Pro, it will display detailed information about that calculation, including the relevant formulae used.

### Can I save my work in Pressure Vessel Pro?

Yes, Pressure Vessel Pro allows you to save multiple calculation cases. This is useful for later reference, allowing you to easily access and review past projects.

### Is Pressure Vessel Pro compatible with different Apple devices?

Pressure Vessel Pro is designed to be universal, meaning it works on all sizes of iPhone, iPod Touch, and iPad, ensuring a consistent experience across your devices.

### How often is Pressure Vessel Pro updated?

The latest version of Pressure Vessel Pro is 2.1.6, which was last updated on May 31, 2023. This indicates a history of updates and ongoing support for the application.

## Version history (last 5 releases)

### 3.0.4 — 2026-07-06

Bug fixes and other minor updates.

### 2.1.6 — 2023-05-31

-Bug fixes
-Other minor updates

### 2.1.5 — 2020-01-21

-Bug fixes
-Other minor updates

### 2.1.4 — 2020-01-20

Bug fixes.

### 2.1.3 — 2017-10-18

- Bug fixes
- Minor Updates

## Apps similar to Pressure Vessel Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Hydraulic Pressure Calculator](https://appshunter.io/ios/app/hydraulic-pressure-calculator/id1420373327) | 5.0 (1) | $2.99 | Utilities |
| [Pressure Vessel Thickness Pro](https://appshunter.io/ios/app/pressure-vessel-thickness-pro/id1492059118) | 1.0 (1) | $3.99 | Utilities |
| [Timber Engineering Calculator](https://appshunter.io/ios/app/timber-engineering-calculator/id646321927) | 3.9 (7) | $3.99 | Utilities |
| [Tank Volume Calculator Pro](https://appshunter.io/ios/app/tank-volume-calculator-pro/id1491606900) | — | $3.99 | Utilities |
| [Pipe Working Pressure Calc](https://appshunter.io/ios/app/pipe-working-pressure-calc/id1447338544) | 4.0 (2) | $2.99 | Utilities |
| [Pressure Vessel Thickness](https://appshunter.io/ios/app/pressure-vessel-thickness/id1492098075) | — | $2.99 | Utilities |

## More apps by J.R.Hobbs

- [Mohr's Circle](https://appshunter.io/ios/app/mohrs-circle/id395110520)
- [Moments of Inertia](https://appshunter.io/ios/app/moments-of-inertia/id494181506)
- [Inspectix](https://appshunter.io/ios/app/inspectix/id673877248)
- [Stress Intensity Factors Pro](https://appshunter.io/ios/app/stress-intensity-factors-pro/id726473168)
- [Stress Concentration Factors 2](https://appshunter.io/ios/app/stress-concentration-factors-2/id1296693579)

All apps by J.R.Hobbs: https://appshunter.io/developer/395110523

## Related topics

[pressure vessels](https://appshunter.io/ios/topics/pressure-vessels) · [pressure vessel thickness pro](https://appshunter.io/ios/topics/pressure-vessel-thickness-pro) · [pressure vessel heads pro](https://appshunter.io/ios/topics/pressure-vessel-heads-pro) · [pressure vessel thickness](https://appshunter.io/ios/topics/pressure-vessel-thickness) · [pressure vessel heads](https://appshunter.io/ios/topics/pressure-vessel-heads)

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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 2026-07-25.*