# Rosette

> Strain gage rosette calculator for stress and direction analysis. (iPhone/iPad app by goBooie LLC.)

- Source: https://appshunter.io/ios/app/rosette/id321812375 (this page in markdown: same URL + `.md`)
- Developer: [goBooie LLC](https://appshunter.io/developer/321812378)
- Category: Education, Utilities
- Price: Free
- Rating: 4.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 0 MB
- Languages: American English
- Released: 2009-07-06
- Data updated: 2026-08-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rosette/id321812375/reviews.md

## What is Rosette?

This application is a calculator for determining stresses from strain gage rosette data.  Once isotropic material information is set the user can input the data from the rosette and determine max and min principle stresses along with the direction of the max principle stress.  Self consistent units have to be used.  A helpful display is provided overlaid on the rosette to show the direction of the calculated stresses.

The text field labeled Y is used to input the 90 degree strains.  The XY field is for the strain at 45 degrees.  The X field allows for input of strain at 0 degrees.  For the material properties the modulus of elasticity field is labeled E and Poisson’s ratio is labeled v.  The keyboard at the bottom only allows real numbers to be input.  Hitting Enter completes input and moves to the next input field in the group.  There are only two groups: strain fields and material fields.

This calculator does not protect against invalid data that leads to invalid calculations (nan will be shown in stress fields for that case).

## Key features

- Strain gage rosette data input
- Calculate principal stresses
- Determine stress direction
- Material property input (E, v)
- Visual stress direction overlay
- Real number input only

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/rosette/id321812375/reviews.md

### 5/5 — Love it

*2009-10-28*

This makes my life much easier. Thanks so much for making this app

## Frequently asked questions about Rosette

### What is Rosette used for?

Rosette is a calculator designed to determine stresses from strain gage rosette data. It helps users input strain values and material properties to calculate maximum and minimum principal stresses and their direction.

### How does Rosette calculate stresses?

Users input strain data from 0, 45, and 90-degree gauges, along with material properties like modulus of elasticity (E) and Poisson's ratio (v). The app then computes the principal stresses and their orientation.

### What kind of devices does Rosette support?

Rosette is available for iPhone devices, allowing users to perform stress calculations on their mobile phones.

### Is Rosette suitable for beginners?

The app is designed for users who understand strain gage rosette data. It does not protect against invalid data that may lead to incorrect calculations, indicated by 'nan' in the stress fields.

### How often is Rosette updated?

The latest version of Rosette is 1.6, which was last updated on April 19, 2023. This indicates regular maintenance and potential for future improvements.

### What is the age rating for Rosette?

Rosette has an age rating of 4+, making it suitable for a wide range of users, including younger students learning about engineering principles.

### Does Rosette have ads?

No, Rosette does not contain advertisements. It provides an ad-free experience for users focused on their calculations.

### What is the user rating for Rosette?

Rosette has a rating of 4.0 stars based on 3 user ratings, suggesting a generally positive reception from its user base.

## Version history (last 5 releases)

### 1.6 — 2023-04-19

More conversion to use SwiftUI.

### 1.5 — 2023-02-21

Bug fixes for iOS 16 compatibility.

### 1.4 — 2019-09-19

Converted application to Swift and SwiftUI.

### 1.3.1 — 2019-01-18

Updated for latest development environment.

### 1.3 — 2015-04-09

Updated keyboard.

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## More apps by goBooie LLC

- [Prisma](https://appshunter.io/ios/app/prisma/id382003903)
- [FieldSketcher](https://appshunter.io/ios/app/fieldsketcher/id901200248)
- [Rock2theCore](https://appshunter.io/ios/app/rock2thecore/id1257124314)

All apps by goBooie LLC: https://appshunter.io/developer/321812378

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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 2026-08-28.*