# Frequencies

> Converts radio channel numbers to frequencies and vice-versa. (iPhone/iPad app by Jaap Crezee.)

- Source: https://appshunter.io/ios/app/frequencies/id898890239 (this page in markdown: same URL + `.md`)
- Developer: [Jaap Crezee](https://appshunter.io/developer/898884775)
- Category: Utilities, Reference
- Price: $0.99
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 6.0 · 12 MB
- Languages: English
- Released: 2014-07-24
- Data updated: 2026-06-10
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/frequencies/id898890239/reviews.md

## What is Frequencies?

Find out what the frequency of a specific LPD / LPD 8 / PMR / CB (Citizen Band, 'normal' or UK) / UHF / PRS / FRS/GMRS / KDR / Marine VHF/ AAR (American Assocation of Railroads) channel is and the CTCSS tone code of a subchannel. 

Do you have a 2 meter / 70 cm band radio and want to communicate with someone with a Marine VHF / PMR / LPD / UHF / PRS / KDR / FRS/GMRS / AAR radio? Is that one also using 'subchannels'? This app is what you need! 

Select which type you need and select the channel and subchannel. The app calculates / converts the channel. The frequency (in MHz) and CTCSS frequency (in Hz) / tone code are then shown. 

Or select the frequency (of a channel or subchannel) and the nearest channel will be shown, if it is nearby the given frequency. Select the tab 'frequency' at the bottom of the app to make use of this functionality.

Possible types:
- PMR
- KDR
- LPD
- LPD8
- CB (Citizen Band)
- CB UK (Citizen Band UK)
- UHF (often used in Australia)
- PRS (often used in New Zeeland)
- FRS / GMRS
- FRS
- Marine VHF
- AAR (American Assocation of Railroads)

There is also a free version of this app with ads. Ads and paid version are just to support the app development and subscription to the stores. Please tell me if you would like to have more features or supported radio types.

App icon by icons8.com / iconsdb.com
Idea by http://portoshop.nl

## Key features

- Channel to frequency conversion
- Frequency to channel conversion
- CTCSS tone code lookup
- Supports multiple radio types (PMR, CB, UHF, Marine VHF, etc.)
- Calculates/converts channel and subchannel
- Finds nearest channel to a given frequency

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/frequencies/id898890239/reviews.md

### 5/5 — Good reference app

*2018-02-19, version 1.9*

As a licensed ham, it's a good app. Wish dev would add freq->meter/cm conversion and meter->/cm->freq conversion. Great update!!

## Frequently asked questions about Frequencies

### What radio types does Frequencies support?

Frequencies supports a wide range of radio types including PMR, KDR, LPD, LPD8, CB (Citizen Band), CB UK, UHF, PRS, FRS/GMRS, FRS, Marine VHF, and AAR (American Association of Railroads).

### How does Frequencies convert channels to frequencies?

You can select the type of radio channel you are using, then input the channel and subchannel number. Frequencies will then calculate and display the corresponding frequency in MHz and the CTCSS frequency in Hz or tone code.

### Can Frequencies find channels based on a frequency?

Yes, you can select the 'frequency' tab and input a specific frequency. The app will then show you the nearest available channel if it is close to the frequency you provided.

### What is the price of Frequencies?

Frequencies is available for a one-time purchase of $0.99.

### What devices is Frequencies compatible with?

Frequencies is compatible with iPhone, iPad, and iPod devices, and also supports Apple Watch.

### How often is Frequencies updated?

The latest version of Frequencies is 1.9, which was last updated on February 17, 2018. The app was initially released on July 24, 2014.

### What is the age rating for Frequencies?

Frequencies has an age rating of 4+, making it suitable for a broad audience.

### Does Frequencies have ads?

The version of Frequencies being analyzed is the paid version and does not contain advertisements. A free version with ads is also available to support development.

## Version history (last 1 release)

### 1.9 — 2018-02-17

This app has been updated by Apple to display the Apple Watch app icon.

Added AAR (American Assocation of Railroads) frequencies.

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## More apps by Jaap Crezee

- [Frequencies Free](https://appshunter.io/ios/app/frequencies-free/id898884772)
- [Time Tolerance Registration List Free](https://appshunter.io/ios/app/time-tolerance-registration-list-free/id999020370)

All apps by Jaap Crezee: https://appshunter.io/developer/898884775

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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.*