# CASA Intuition

> 3D structural modeling and analysis visualization for space-frames. (iPhone/iPad app by Intesym Ltd..)

- Source: https://appshunter.io/ios/app/casa-intuition/id391344088 (this page in markdown: same URL + `.md`)
- Developer: [Intesym Ltd.](https://appshunter.io/developer/361434891)
- Category: Education, Business
- Price: $1.99
- Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.1 · 5 MB
- Languages: English
- Released: 2010-09-20
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/casa-intuition/id391344088/reviews.md

## What is CASA Intuition?

Structural / Civil Engineering App for aiding the intuitive understanding of the behaviour of space-frames under load.

Aimed at students, CASA Intuition allows the user to create 3D structural models and obtain both a graphical representation of the deflections and forces and also normalised numerical values for easy comparison of effects around the structure.

(Note: no actual analysis results are given.)

More information about this App can be found in its integrated help and on our website. The App also contains "Replay Demonstrations" which describe and enact its use.


=== General Technical Features ===

* Automatic analysis.

* Integrated extensive section library:
 - British, European, American, Canadian, Australian, South African, Japanese, Russian.
 - See our website for the range of shapes.
(Displayed property values are normalised and for comparison purposes only.)

* Integrated section generator for common shapes:
 - Open: I/H, channel, zed, angle, tee.
 - Hollow: Oval, Rectangular.
 - Solid: Oval, Rectangular.
 - Calculates: Area, Inertia, Torsional constant, Elastic moduli, mass.
(Displayed property values are normalised and for comparison purposes only.)

* Integrated material library:
 - Steel, Aluminium, Concrete, Timber, Glass.

* Member ends can be rigid or pinned.

* Loads applied as point, couple, trapezoid.

* Multiple load-cases.

* Gravity (self-weight) loading.
(Numerical values are not actual; they are normalised for comparison purposes only.)

* Graphical and numerical results include:
 - Reactions, deflections, bending moments, shear forces, bending stress.
 - Points of interest.
 - Results given all along members.
(Numerical values are not actual; they are normalised for comparison purposes only.)

=== General User Interface Features ===

* Universal App - for iPhone, iPod touch, and iPad.

* Metric & imperial units.

* Four simple interactive screens:
 - Geometry, Loading, Results: for interacting with the model.
 - Utilities: Supplementary functions (see below).

* Easy modelling:
 - Tap to select; tap to edit.
 - Move and copy geometry.
 - Slide nodes along members.
 - Change member spans.
 - Split members.
 - Replicate loading across members.

* Graphical drag-and-tap controls:
 - Rotate, pan, zoom the view with simple gestures.
 - Drag nodes for positions.
 - Drag loads for positions and magnitudes.
 - Drag marker along member to read off results values.
 - Tap on Points of Interest for important results.
 - Select nodes to measure distances, angles, and areas between them.

* Numeric entry available:
 - Double-tap on a datum to enter its numerical value.
 - Includes a convenient built-in calculator.

* Straightforward section library:
 - Pick from country, shape, and size.
 - View diagram and properties.
 - For custom shapes, double-tap on dimensions to edit.
 - Axes can be rotated by 90 degrees.

* Report generation:
 - Configurable content.
 - Graphical layout.
 - On-screen preview.
 - Export PDF by e-mail.
 - AirPrint.
(Numerical values are normalised and for comparison purposes only.)

* Supplementary functions:
 - Document titles.
 - Choice of unit system (UK/EU Metric, US Imperial).
 - On-line help.
 - Load and save models.

## Key features

- 3D structural model creation
- Graphical deflection and force visualization
- Normalized numerical results
- Extensive section and material libraries
- Multiple load case support
- Interactive drag-and-tap controls
- PDF report generation

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/casa-intuition/id391344088/reviews.md

### 5/5 — AMAZING!!!!

*2012-01-01*

This app is amazing....as a matter of a fact its not an app its a whole structural analysis program. I love the fact that there are all the codes and sections to chose from, lots of materials, the fact that it also gives you a complete report of the analysis and extracts as a pdf also makes this amazing. You get BMD, SFD, FBD, deflected shape...maybe....just maybe in the next update u can add virtual work done and possible a few failure mechanisms. 

Fantastic.....if you are a serious structural engineer and want to validate your work this is the SOFTWARE for you.

### 4/5 — Great little app for structural engineering students!

*2010-12-11, version 1.4*

This app works great for playing with different structure geometries and load configurations to develop a more intuitive understanding of structure behavior.  Being able to see how a structure deforms is especially useful when first learning matrix methods of structural analysis.  Since these methods rely upon understanding how a structure deforms under independent free DOF translations, it is useful to have a quick way to check your understanding of the structure deformations for each DOF.  This goes doubly for dealing with symmetric/antisymmetric DOF sets in which two or more DOFs translate at the same time.

One major improvement the authors could make to bring this rating up to 5 star: Allow the user to select the input units. For example, I use USA as my unit setting, however the app defaults to inches for inputting structure geometry.  Working in inches makes little sense as most structures are measured in 10s to 100s of feet. This makes geometry input a slight nuisance.

Other than that minor complaint, this is a great app, well worth the $1.99! Keep up the good work guys =)

## Frequently asked questions about CASA Intuition

### What is CASA Intuition?

CASA Intuition is a structural and civil engineering app designed to help students intuitively understand the behavior of space-frames under load. It allows for the creation of 3D structural models and provides graphical and normalized numerical results for deflections and forces.

### What kind of structural analysis does CASA Intuition perform?

CASA Intuition performs automatic analysis to provide a graphical representation of deflections and forces, along with normalized numerical values. It's important to note that no actual analysis results are given, and displayed property values are normalized for comparison purposes only.

### What sections and materials are included in CASA Intuition?

The app features an integrated extensive section library with British, European, American, Canadian, Australian, South African, Japanese, and Russian standards. It also includes an integrated material library with Steel, Aluminium, Concrete, Timber, and Glass.

### How does CASA Intuition handle loads?

Loads can be applied as point, couple, or trapezoid, and the app supports multiple load-cases, including gravity (self-weight) loading. Member ends can be set as rigid or pinned.

### What devices is CASA Intuition compatible with?

CASA Intuition is a universal app, meaning it is compatible with iPhone, iPod touch, and iPad devices. It supports both metric and imperial units.

### How much does CASA Intuition cost?

CASA Intuition is available for a one-time purchase price of $1.99. There are no in-app purchases or subscriptions associated with this application.

### Does CASA Intuition have ads?

No, CASA Intuition does not contain advertisements. As it is a paid application, users can expect an ad-free experience.

### How often is CASA Intuition updated?

The latest version of CASA Intuition is 21.09, which was last updated on September 30, 2021. The app was initially released on September 20, 2010.

## Version history (last 5 releases)

### 21.09 — 2021-09-30

Maintenance update.

The app now uses the standard iOS file browser, and we recommend saving any current documents and closing the app prior to updating. On first launch, if it opens in the "Recents" files tab, then browse to "On my iPad" and then to this app's documents. If the app were not fully closed prior to updating then the documents folder may appear empty when first opened, in which case close the app in the iOS home page and relaunch it.

### 18.03 — 2018-04-09

This app has been updated by Apple to display the Apple Watch app icon.

Improved compatibility with iOS 11 and iPhone X.

### 1.87 — 2017-03-06

Fixed indication of ambiguous major axis alignment.

### 1.86 — 2017-01-04

Updates for iOS 10.
Miscellaneous improvements.

### 1.84 — 2016-06-07

Miscellaneous improvements.

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## More apps by Intesym Ltd.

- [CASA Beam](https://appshunter.io/ios/app/casa-beam/id361434888)
- [CASA Space Frame 3D](https://appshunter.io/ios/app/casa-space-frame-3d/id371089612)
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All apps by Intesym Ltd.: https://appshunter.io/developer/361434891

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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.*