# P-Way Horizontal Design Calcs

> P-Way Horizontal Design Calcs (iPhone/iPad app by mark mcmahon.)

- Source: https://appshunter.io/ios/app/p-way-horizontal-design-calcs/id6788542573 (this page in markdown: same URL + `.md`)
- Developer: [mark mcmahon](https://appshunter.io/developer/6788542852)
- Category: Productivity, Utilities
- Price: $4.99
- Age rating: 4+
- Requires: iOS 15.1 · 22 MB
- Languages: American English
- Released: 2026-07-17
- Data updated: 2026-08-01
- User reviews in markdown: https://appshunter.io/ios/app/p-way-horizontal-design-calcs/id6788542573/reviews.md

## What is P?

P-Way Horizontal Design Calcs is a mobile App calculator for UK Permanent Way engineers designing horizontal alignments.

Built around the standard UK formulas (equilibrium cant, cant deficiency, rates of change, transition length), it gives you the numbers you need on your phone, on site, or in a meeting: equilibrium cant, applied cant, deficiency, desire cant, cant gradient, rates of change. Three curve modes include single, compound and reverse curves.

Formulas match the 11.8 × V² / R convention used in UK practice. Cant inputs snap to the 5 mm convention.

Privacy: no data leaves the device. No accounts, no ads, no analytics.


## Version history (last 1 release)

### 1.0 — 2026-07-17

No release notes.

## More apps by mark mcmahon

- [P-Way Vertical Design Calcs](https://appshunter.io/ios/app/p-way-vertical-design-calcs/id6792111686)

All apps by mark mcmahon: https://appshunter.io/developer/6788542852

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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 2026-08-01.*