Boltspan Support

Help and product information for Boltspan.

Getting Started

A transparent bolted-joint calculator for preload scatter, torque, joint stiffness, load fraction, separation, proof margin, fatigue, and tightening sequences.

Included Features

Metric thread stress-area library
Torque-preload scatter envelope
Bolt/joint stiffness model
Separation and proof margins
Sequence and inspection worksheet

Common Questions

Does the app need an account, subscription, or in-app purchase?
No. It is a one-time paid download with no account, advertising, analytics, subscription, or in-app purchase.

Does it work offline?
Yes. Core features and bundled material work without a developer-operated service.

Where is my information stored?
Your editable workspaces, parameter values, imported records, comparison settings, notes, and export history remain in local app storage.

What are the limits?
Engineering screening only. Confirm material, lubrication, thread engagement, embedment, temperature and governing code.

Contact

Email support@shadowfetch.com with the app name, device model, iOS version, and a concise description of the issue.