iPhone Screenshots


Trace a padeye drawing or photo of an actual padeye on your device, and check the padeye integrity at your finger tips. No paper, no calculator, no shackle table.

The App calculates the stress state in the padeye based on elastic AISC code. A scaled working page is used to analyse the stress state based on shackle position. It simultaneously calculates the stress state during simulation of the shackle position and magnitude of the force. It warns the user if the UF (Utilisation Factors) exceed unity. An intuitive UF radar is employed to plot the utilisation factor for any desired position of the shackle. Automatic simulation for ranges of shackle position, section location and angle is available to ease user in analysing the padeye. List of available shackles are presented on the data page. Initial guess of the padeye size are given at the start upon shackle capacity selection. User is able to alter the padeye size based on the requirement and material availability. The easy-to-operate 'drafting page' is for the user to operate simple drafting tool with finger touch and drag. Tracing a design drawing or a photo of actual padeye is made possible with the mobile device capability. User can assess and review an existing design of a padeye by taking photo of the design drawing or the actual padeye.

What’s New

Version 1.8

List of shackles added, from 2 tonne to 1000 tonne shackles are available - Full Version.
Camera and photo album for design tracing enabled.

App Privacy

The developer, PAFA Co UK, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

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

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