# ComprCheck

> Diaphragm compressor engineering toolkit with 19 calculators and data charts. (iPhone/iPad app by Mingxuan Fan.)

- Source: https://appshunter.io/ios/app/comprcheck/id1551040998 (this page in markdown: same URL + `.md`)
- Developer: [Mingxuan Fan](https://appshunter.io/developer/1551041000)
- Category: Education, Productivity
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 7 MB
- Languages: English
- Released: 2021-01-31
- Data updated: 2026-08-18
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/comprcheck/id1551040998/reviews.md

## What is ComprCheck?

ComprCheck is a comprehensive tool kit for design, operation, fabrication and maintenance of diaphragm compressor. It is a good reference for engineer, sales, shop assembler, field service personnel. This App is designed for Diaphragm Compressors but can provide reference to other types of gas compressors as well.

ComprCheck includes 19 calculators and data charts. These calculators and charts cover the following areas of diaphragm compressor:

(1)	 Compressor Process 
-	Overall and Stage Compression Ratio
-	Discharge Temperature
-	Heat Load of Compression Process
-	Flow Conversion from Volumetric to Mass Rate

(2)	Compressor Piping
-	Working Pressure of Pipe and Tube
-	Working Pressure Chart of ANSI Flanges
-	Flange Bolting Torque
-	Gas Velocity

(3)	Belt Drive System
-	Drive Belt length
-	Center Distance
-	Motor Sheave Size
-	Motor Dimension

(4)	Hydrogen 
-	Conversions of Flow Rate
-	Conversions of Power
-	Capacity of Hydrogen Vessel

(5)	Miscellaneous
-	Lifting Weight of Compressor Head Parts
-	Bolt Thread Comparison (British and Metric)
-	Pressure Release Time
-	Unit Conversions of Temperature, Pressure, Volume, Flow, Mass, Length and Torque

## Key features

- Compressor process calculations
- Compressor piping data
- Belt drive system calculators
- Hydrogen flow and power conversions
- Miscellaneous engineering charts
- Unit conversions

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/comprcheck/id1551040998/reviews.md

### 5/5 — Great reference guide

*2021-05-07*

Very handy for on the floor compressor information

## Frequently asked questions about ComprCheck

### What is ComprCheck used for?

ComprCheck is a comprehensive toolkit designed for the design, operation, fabrication, and maintenance of diaphragm compressors. It offers 19 calculators and data charts to assist engineers and technicians.

### What specific calculations does ComprCheck offer?

ComprCheck includes calculations for compressor process (ratio, temperature, heat load), piping (pressure, flange torque, gas velocity), belt drive systems, hydrogen conversions, and miscellaneous items like lifting weights and unit conversions.

### Is ComprCheck suitable for other types of compressors?

While primarily designed for diaphragm compressors, ComprCheck can provide reference for other types of gas compressors as well, making it a versatile tool.

### What devices can I use ComprCheck on?

ComprCheck is available for iPhone and iPod devices, allowing for mobile access to its engineering tools.

### How often is ComprCheck updated?

The latest version of ComprCheck was released on March 1, 2024, indicating active development and support for the application.

### What is the user rating for ComprCheck?

ComprCheck has a perfect rating of 5.0 stars based on 3 user reviews, suggesting a highly positive user experience.

### Does ComprCheck have ads?

No, ComprCheck does not contain advertisements, providing an uninterrupted user experience.

### What is the age rating for ComprCheck?

ComprCheck is rated 4+, making it suitable for users of all ages.

## Version history (last 5 releases)

### 3.3 — 2024-03-01

a few fixes

newly add a PSV sizing tool in Flow/PSV to help the selection of PSV with a proper orifice size

PSV Orifice - Gas
PSV Orifice - Liquid

Enter Process Medium, Flow Rate, Set Pressure, and Temperature, then the orifice area (diameter) will be calculated, then you are able to select a orifice size.

### 3.0.2 — 2022-09-29

Fixed a few errors...

### 3.0.1 — 2022-08-16

- Fixed a few typos and errors.
- Added two calcs: "Pressure Drop for Dry Gas" and " Pipe Cv"

Thanks for your continuous support!

### 2.2.0 — 2022-01-01

Fixed some errors.

Added two new sections:
- "Piping", which includes pipe-related application "Bend Radius" and " Spacing".
- "Code", which introduces compressor-related codes and standards; initially, ASME-related codes are includes.

Thanks for your continued supports in the past year!  Happy new Year 2022!

### 2.1.0 — 2021-12-03

fixed a few issues and added "Predicted Flow" calculation.

Thanks for your continuous supports!

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## More apps by Mingxuan Fan

- [H2Calcs](https://appshunter.io/ios/app/h2calcs/id1629543419)

All apps by Mingxuan Fan: https://appshunter.io/developer/1551041000

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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 2026-08-18.*