# PCS Instruments — Hertz contact calculations

> Calculate Hertz contact pressures and sizes for various geometries and materials. (iPhone/iPad app by PCS Instruments Limited.)

- Source: https://appshunter.io/ios/app/pcs-instruments/id1575085370 (this page in markdown: same URL + `.md`)
- Developer: [PCS Instruments Limited](https://appshunter.io/developer/1575085372)
- Category: Utilities, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 5 MB
- Languages: English
- Released: 2022-04-20
- Data updated: 2026-06-02
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/pcs-instruments/id1575085370/reviews.md

## What is PCS Instruments?

Designed by PCS Instruments, the PCS App allows you to easily and quickly calculate Hertz contact pressures and sizes for any valid Hertzian geometry with specified loads and materials.

Specimen geometries and material properties for all our instruments are loaded on the app: simply select your specimens, input the load, and the app does the rest - giving you all the contact conditions instantly!

For custom Hertz contacts, you can select from a range of standard (and custom) contact types to fit all your testing needs. For circular and line contacts you can even set just the radius of the sample and any other parameter, and the app will calculate the load required to achieve this and all the other parameters. These parameters are:

 - Load
 - Max pressure
 - Contact radius
 - Mean pressure
 - Contact area
 - Approach

For users of PCS Instruments machines, the PCS App comes pre-loaded with all the contact geometry and standard specimens and materials from our instruments including the:

 - MTM
 - EHD
 - ETM
 - HFRR
 - MPR
 - ABS
 - ABSSL

Moreover, the PCS App not only comes pre-loaded with properties for all the standard specimen materials we supply, but many more common materials, and the option for you to add and save your own custom materials.

## Key features

- Hertz contact pressure calculations
- Contact size calculations
- Load and material input
- Pre-loaded specimen data
- Custom material support
- Circular and line contact calculations

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/pcs-instruments/id1575085370/reviews.md

### 5/5 — Great app

*2022-10-24, version 1.0*

Really great app, that’s helpful and easy to use!

### 5/5 — Great app!

*2022-04-27, version 1.0*

Really nice!

## Frequently asked questions about PCS Instruments

### What is PCS Instruments used for?

PCS Instruments allows you to quickly calculate Hertz contact pressures and sizes for any valid Hertzian geometry with specified loads and materials. It's designed for users of PCS Instruments machines and those needing custom contact calculations.

### Does PCS Instruments have ads?

No, PCS Instruments is ad-free. It provides a clean user experience without interruptions from advertisements.

### What devices does PCS Instruments support?

PCS Instruments is available for iPhone and iPod devices. It is designed for iOS users.

### How often is PCS Instruments updated?

PCS Instruments was last updated on April 20, 2022, with version 1.0. Future updates will depend on the developer's release schedule.

### Can I add my own materials to PCS Instruments?

Yes, PCS Instruments allows you to add and save your own custom materials in addition to the pre-loaded standard and common materials.

### What types of contacts can PCS Instruments calculate?

PCS Instruments can calculate for circular and line contacts, among other standard and custom contact types. You can input specific parameters to determine required loads or vice versa.

### What information does PCS Instruments provide for contacts?

For calculated contacts, PCS Instruments provides parameters such as Load, Max pressure, Contact radius, Mean pressure, Contact area, and Approach.

### What is the age rating for PCS Instruments?

PCS Instruments has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 1 release)

### 1.0 — 2022-04-20

No release notes.

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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 2026-06-02.*