Solve beam deflection problems easily and obtain results, graphs, and equations to double-check your work!

This is a great learning tool for mechanical engineering, civil engineering, and architecture students. It is an excellent companion for engineering statics and mechanics of materials college-level courses. While you should not rely on this tool for professional engineering design, you may still find it useful to double-check your hand calculations and results.


Quickly place loads and supports along the beam using a powerful interactive graphical design. Our solver algorithm will automatically handle individual sections and superposition of loads.

Immediately see how the beam bends in response to the applied conditions. The shear, moment, slope, and deflection diagrams and equations update automatically.


Each type of load and support has a different icon. You can simply drag any of them onto the beam.

• Concentrated point loads
• Distributed loads
• Moment loads
• Simple supports
• Fixed supports
• Fixed hinges
• Floating Gerber hinges


Either specify moment of inertia and elastic modulus values directly, or find common shapes and materials using the built-in databases.

• Steel: American and European shapes
• Lumber: American shapes
• Other materials can be used used with custom shapes.


Easily edit and rotate cross sections if the built-in dimensions do not quite match your use case. The beam properties are automatically recomputed and used by the beam deflection solver.


• Metric and standard measurement units
• Smart diagrams automatically detect local maxima and minima and zero-crossings.
• Your work is automatically saved in separate files so you can return to it in the future.
• Quick-start templates help you to start right away!


Issues, questions, or requests? Submit a review or email

What’s New

Version 5.3.0

This release introduces the ability to compute and apply beam weight automatically as well as numerous improvements throughout the app, including performance and stability fixes.

• NEW: The checkbox next to the material density value allows you to apply beam weight as a load. Modifying the material density or cross section area values automatically enables this checkbox, but you can still uncheck it to disable it.

• NEW: When you explore sections in the built-in database, you can now see additonal reference values that you may find useful. Any rows with a light gray background are interactive. If you tap on them, they will be highlighted for visualization in the diagram on top of the screen.

• NEW: The app now enforces a minimum beam length based on 10 times the height of the cross section, if one is specified. Changing the height of the cross section will automatically cause the beam length to increase if it is less than this threshold.

• IMPROVED: You may notice that the beam visualization now reflects the proportional size of the cross section.

• IMPROVED: When a cross section is not specified, instead of rendering a default shape, we now simply draw a line that represents an abstract beam. Even when a cross section is specified, we now render a thin center line, which makes the deflection of the beam easier to follow visually.

• CHANGED: In order to make room for the new options needed to enable the new beam weight feature, you will notice a change in layout and interaction in the material and cross section widgets.

• CHANGED: Previously, when you changed the default app unit settings, any values entered for the current file would get overwritten using the new units. This behavior does not make sense now that there are multiple files, so we disabled it. Now, when you change the default app unit settings, only the output calculation values and the default values for new beams and loads are affected.

• CHANGED: When using English (Standard) units, the scroller in the numpad view changes your value in increments that are fractions of 2 (example: 0.25", 0.125", etc). We hope this makes it easier to work with common values in these unit types. Let us know!

• FIXED: We improved stability in some phones where the app may have sometimes crashed due to memory usage. We also improved performance in most phones where loading and searching the beam library may have been slow or laggy.

Issues, questions, or requests? Please submit a review or email

Ratings and Reviews

4.5 out of 5
45 Ratings
45 Ratings
8Way ,

Needs polishing

Kinda klunky interface. The calculator layout is poor. Calculator needs means of entering scientific notation. Missing aluminum extrusions. Should have a way to favorite beam shapes and add user defined ones. I prefer scientific notation normalized to be x.xx x10^x not xxx.x x10^x

Not sure why 10x length limitation.

Developer Response ,

Thank you very much for your detailed feedback and requests! We always have to make a tradeoff between polishing existing features and rolling out new ones, but over time we try to address all sharp corners, so thanks for pointing some of them out!

Regarding the 10X requirement: The equations that the app uses internally assume that the beam is "slender", meaning that the length-to-height ratio should be greater than 10. If you need to design for something shorter, you may need to use a different type of analysis tool. You can find a mention of this in the general Wikipedia article on Beam Deflection

benyamin 5s ,

it can be better

it should have angle for better experiment

Developer Response ,

Thank you for your feedback! This will help us prioritize future work.

If you have any specific use cases for angles in mind, please don't hesitate to send them to us at . This will be helpful as we design and implement future functionality.


Good try, but half finished app!

OK not meaning to put the dev down as this is a nice approach but I think the dev should have spent more time making the app workable than playing with the interface. The app is so called "version 5.0". One would assume from this it would have passed through four major iterations to get to this point. The app feels like beta release 0.9.
The following are missing.
1. Save and file functions
2. Undo and redo
3. A "help" or tutorial.
Also what would be nice would be the ability to design or draw beam sections instead of using the only ones offered. All that is provided is a database of standard sections downloaded off the internet, this would have been provided by version 3 or 4.
The app feels like an engineer grad student trying to show off the engineering knowledge. Any of the five star reviews are either friends of the dev or purchasers of previous versions who are happy to see progress.
If I have misrepresented the dev and invite them to contact me and I will revise my review.


Seller, LLC
29.2 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Chinese, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Turkish

Age Rating
Rated 4+
© 2010-2018, LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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