# WCA Toolbox — Wind Correction & Holding

> Wind Correction & Holding (iPhone/iPad app by Roland Emrich.)

- Source: https://appshunter.io/ios/app/wca-toolbox/id6791452658 (this page in markdown: same URL + `.md`)
- Developer: [Roland Emrich](https://appshunter.io/developer/1887105143)
- Category: Utilities, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 18.0 · 2 MB
- Languages: American English
- Released: 2026-08-18
- Data updated: 2026-09-11
- User reviews in markdown: https://appshunter.io/ios/app/wca-toolbox/id6791452658/reviews.md

## What is WCA Toolbox?

WCA Toolbox is a focused aviation calculator for wind correction angle (WCA) planning and holding-pattern wind prediction.

Enter a course, wind direction, wind speed, and true airspeed to receive clear, pilot-facing guidance for wind correction angle, heading, groundspeed, headwind or tailwind, and crosswind. Results are presented in a clean format designed for quick flight-planning use.

For holding patterns, WCA Toolbox calculates inbound and outbound guidance from your magnetic inbound track and true wind data. The high-precision method models the complete racetrack, including both turns and straight legs, using a standard turn rate of 3° per second. It then determines an outbound heading and timing that aim to achieve your selected inbound time. A conventional 3× WCA approximation is also included as a familiar reference.

Features

• Wind correction angle, heading, groundspeed, and wind components
• Magnetic inbound track entry for holding patterns
• High-precision holding prediction with complete-pattern wind modelling
• Right- and left-hand holding patterns
• 1:00 and 1:30 inbound-time presets
• Clear pilot-facing inbound and outbound heading guidance
• Saved calculations stored locally on your device
• Fully offline operation
• Portrait-only, full-screen interface for a focused workflow

Important notice

WCA Toolbox is intended for flight-planning assistance only. It does not replace published procedures, ATC instructions, aircraft documentation, operational judgement, or instructor guidance. Always use current, authoritative aviation information.


## Version history (last 1 release)

### 1.0 — 2026-08-18

No release notes.

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## More apps by Roland Emrich

- [QR-log-Bridge](https://appshunter.io/ios/app/qr-log-bridge/id6760977103)

All apps by Roland Emrich: https://appshunter.io/developer/1887105143

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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 2026-09-11.*