# Cold WXR Altitude Correction

> Cold weather altitude correction and METAR decoder for aviation approaches. (iPhone/iPad app by Ralf Keber.)

- Source: https://appshunter.io/ios/app/cold-wxr-altitude-correction/id949285952 (this page in markdown: same URL + `.md`)
- Developer: [Ralf Keber](https://appshunter.io/developer/370422475)
- Category: Utilities
- Price: $4.99
- Age rating: 4+
- Requires: iOS 13.0 · 13 MB
- Languages: American English
- Released: 2015-05-13
- Data updated: 2026-06-08
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/cold-wxr-altitude-correction/id949285952/reviews.md

## What is Cold WXR Altitude Correction?

Cold Weather Altitude Correction is a tool for visualizing and calculating approaches at low temperatures. 
In addition you will find a decoder for METAR RWY Reports.

The calculation is based on ICAO PANS OPS Doc 8168. 
It uses a more accurate method as the well-known 4 per correction, which becomes imprecise for temperatures below -15°C.

Conventional tools are calculating only a list of temperature corrected altitudes. This tool is designed more closely to a real approach. Corrected altitudes are presented in a graphical interface. A table of distances with related corrected altitudes can be calculated.

With only field elevation and temperature a graphic layout will be shown:
- glide path down to the runway
- corrected MSA 
- corrected MDA
- corrected GPA
- corrected custom ALT
Moving a yellow dot along the glide path down to the runway will show any corrected altitudes with their related distances to threshold or to a DME station.

Distance - Altitude Table:
A table with distance and corrected altitude can be calculated. 
This table is similar to the distance / altitude tables known from instrument approach charts, but it will show corrected altitudes.
You can choose between an approach type based on "distance to threshold" (GPS) or based on a defined DME station.

A handbook is included in the app itself.
For night operations you can switch to dark mode.

## Key features

- Cold weather altitude correction
- METAR RWY Report decoder
- Graphical altitude visualization
- Distance-Altitude table
- ICAO PANS OPS Doc 8168 based calculation
- Dark mode for night operations

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/cold-wxr-altitude-correction/id949285952/reviews.md

### 3/5 — Issue

*2024-02-03, version 3.1.0*

App was not working properly for a while. When I tried to run it was crashing. When I reinstalled Now it is working.

### 4/5 — Very Helpful

*2022-02-07, version 2.2.0*

I like it, take a read through or two and a few armchair dry runs and it soon makes sense and presents all the info I need to fly non precision approaches in low temps more accurately and to a greater margin of safety with much less of the guess work than before. Would love to have multitasking enabled for it so that I could use split screen and slide over to be able to view it at the same time as my approach plates please.

### 5/5 — Excellent

*2021-08-04, version 2.1.0*

I have to disagree with previous rating stating not easy and confusing. This is an excellent intuitive interface providing all information clearly. Good job, well done, thanks for a brilliant tool.

### 2/5 — Confusing

*2021-04-07, version 2.1.0*

This is not a very easy app to understand, needs re-thinking on design layout to make it more user friendly.

### 1/5 — Its not opening

*2019-02-13, version 1.2.0*

I dont know what happened but its not opening any more:(

### 1/5 — Does not work

*2016-11-30, version 1.0.1*

Simply does not opens. Money for nothing.

## Frequently asked questions about Cold WXR Altitude Correction

### What is Cold WXR Altitude Correction used for?

Cold WXR Altitude Correction is a utility app designed to visualize and calculate approach altitudes in cold weather. It provides a more accurate method for temperature corrections than conventional tools, especially for temperatures below -15°C.

### How does Cold WXR Altitude Correction calculate altitudes?

The calculation is based on ICAO PANS OPS Doc 8168. It presents corrected altitudes graphically, showing the glide path down to the runway, corrected MSA, MDA, GPA, and custom altitudes with their related distances.

### Does Cold WXR Altitude Correction include a METAR decoder?

Yes, the app includes a decoder for METAR RWY Reports, allowing users to interpret weather information relevant to runway conditions.

### What platforms is Cold WXR Altitude Correction available on?

Currently, Cold WXR Altitude Correction is supported on iPad devices.

### How often is Cold WXR Altitude Correction updated?

The app was last updated on July 26, 2024, to version 3.2.0. This indicates a commitment to maintaining and improving the application.

### What is the age rating for Cold WXR Altitude Correction?

Cold WXR Altitude Correction has an age rating of 4+, making it suitable for a wide range of users.

### Does Cold WXR Altitude Correction have ads?

No, Cold WXR Altitude Correction does not contain advertisements. It is a paid application with no in-app purchases or ads.

### Is there a handbook included with Cold WXR Altitude Correction?

Yes, a handbook is included directly within the app itself, providing users with guidance and information on its features and usage.

## Version history (last 5 releases)

### 3.2.0 — 2024-07-26

The manual has been updated.
The app has been adapted for Apple silicone Macs.
The pinch gesture for the zoom has been reprogrammed and the swipe gesture between the 3 main windows has been deactivated to avoid unwanted interference.

### 3.1.2 — 2024-04-11

Automatic shifting to the graphical view after entering mandatory values removed.
Minor design changes in the navigation bar to differentiate between shifting and action.
Overlapping elements are better displayed when moving the yellow dot.
When changing the range using a pitch gesture, a crash occurred very rarely, which is not reproducible to date.
Error prevention, error handling and error correction have been added to prevent this from happening.

### 3.1.1 — 2024-02-15

The number of whole DME values displayed in a split view table has been increased.
Display improvements for the IPAD Mini 6.

### 3.1.0 — 2023-11-03

- Adapted to iPadOS 17.
- Fixed a small bug that caused the 'DME station button' to become enabled after the view was locked and unlocked.
- After entering an additional ALT (green box), a button appears that automatically adjusts the range and position of the yellow point to show the intersection of the glide path from the entered (green) ALT.
- Improved error handling.
- Minor display improvements.
- Minor accuracy improvements.

### 3.0.0 — 2023-04-19

Split View, Slide Over And Screen Rotation
The app has been rewritten from scratch to support multitasking and different screen sizes, including portrait and square windows.
For small window sizes the graphical interface is replaced by a simple table with corrected values.
It has also been adapted to current and future iOS specifications.

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## More apps by Ralf Keber

- [Multiply Me 1x1](https://appshunter.io/ios/app/multiply-me-1x1/id511707704)
- [EASA FTL Calc](https://appshunter.io/ios/app/easa-ftl-calc/id1055758700)
- [Tools For Pilots](https://appshunter.io/ios/app/tools-for-pilots/id1365863925)

All apps by Ralf Keber: https://appshunter.io/developer/370422475

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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 2026-06-08.*