# Construction Pro: Calculator

> Construction calculator for iPhone and iPad by Manh Nguyen. Free download with limited introductory access and paid Pro options.

## Product and evidence
- [Product facts](https://mathhero.space/constructionpro/product-facts/): devices, version checked, offline behavior, access and limitations.
- [App workflows](https://mathhero.space/constructionpro/app-guide/): task-based examples for measurement math, saved jobs and PDFs.
- [Captioned screen walkthroughs](https://mathhero.space/constructionpro/demos/): six developer-produced sequences using real app screenshots; not live interaction recordings.
- [Reviewer kit](https://mathhero.space/constructionpro/review-kit/): assets, test problems and independent review worksheet.
- [App Store](https://apps.apple.com/app/construction-pro-calculator/id6760248486): current availability, platform compatibility and purchase options.

## Calculation references
- [Free web calculators](https://mathhero.space/constructionpro/calculators/)
- [Worked guides](https://mathhero.space/constructionpro/blog/)
- [Developer and editorial process](https://mathhero.space/constructionpro/about/)
- [Support](https://mathhero.space/constructionpro/support/)
- [Machine-readable facts](https://mathhero.space/constructionpro/downloads/constructionpro-product-facts.json)

This is developer-published documentation. It does not certify code compliance or constitute an independent product review.