# Radian Rule

> Maritime angle calculation tool for lateral separation and distance. (iPhone/iPad app by Nate Blake.)

- Source: https://appshunter.io/ios/app/radian-rule/id1487263442 (this page in markdown: same URL + `.md`)
- Developer: [Nate Blake](https://appshunter.io/developer/556709482)
- Category: Utilities, Travel
- Price: Free
- Rating: 5.00/5 from 9 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 0 MB
- Languages: English
- Released: 2019-11-11
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/radian-rule/id1487263442/reviews.md

## What is Radian Rule?

A simple app that can aid in determining the required angle between two objects when the desired lateral separation and current distance between the two objects is known. This is useful in maritime operations such as stationing.

## Key features

- Angle calculation
- Lateral separation input
- Distance input
- Maritime stationing aid
- Simple interface

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/radian-rule/id1487263442/reviews.md

### 5/5 — SWO

*2019-12-11*

Great for people who hate public math on the bridge wing with the entire wardroom breathing over your shoulder!

## Frequently asked questions about Radian Rule

### What is Radian Rule used for?

Radian Rule is a utility app designed to help determine the required angle between two objects. It's particularly useful in maritime operations for tasks like stationing, where precise angles are crucial.

### How accurate is Radian Rule?

The app has received an excellent rating of 5.0 stars from 9 user reviews, indicating a high level of user satisfaction with its functionality and accuracy.

### Is Radian Rule free to use?

Yes, Radian Rule is completely free to download and use. There are no costs associated with its download or any in-app purchases.

### What devices does Radian Rule support?

Radian Rule is available for iPhone and iPod devices. It is designed to run on Apple's mobile operating systems.

### How often is Radian Rule updated?

The latest version of Radian Rule is 2.0, which was released on January 7, 2021. While updates may not be frequent, the app is stable and functional.

### What is the age rating for Radian Rule?

Radian Rule has an age rating of 4+, making it suitable for a wide range of users, including younger individuals who may be involved in educational or introductory maritime concepts.

### Does Radian Rule have ads?

No, Radian Rule is ad-free. Users can utilize its features without any interruptions from advertisements.

## Version history (last 2 releases)

### 2.0 — 2021-01-07

A totally new user interface that draws a triangular representation of what you're trying to measure. Radian Rule 2.0 offers a new feature as well: the ability to determine separation and distance based on angular separation. Version 2.0 also offers the ability to change distance units and supports dark mode.

### 1.0 — 2019-11-11

No release notes.

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## More apps by Nate Blake

- [4Counters](https://appshunter.io/ios/app/4counters/id1628885789)

All apps by Nate Blake: https://appshunter.io/developer/556709482

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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 2026-06-10.*