# PSK31

> Lifestyle

Canonical page: [https://chrome-stats.com/d/id385619882](https://chrome-stats.com/d/id385619882)

## Overview

- **ID:** `id385619882`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Black Cat Systems
- **Category:** Lifestyle
- **Rating:** 3.60 / 5 (15 ratings)
- **Version:** 1.3
- **Last updated:** 2016-01-04
- **First published:** 2010-08-20
- **Size:** 1.47 MB
- **Data as of:** 2026-09-21
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/psk31/id385619882)
- **Website:** [http://www.blackcatsystems.com/ipad-iphone-ipod-touch-shortwave-ham-amateur-radio-app/PSK31-dx-spotting-waterfall-cq-contest-radioteletype-14070.html](http://www.blackcatsystems.com/ipad-iphone-ipod-touch-shortwave-ham-amateur-radio-app/PSK31-dx-spotting-waterfall-cq-contest-radioteletype-14070.html)

## Description

Want to monitor PSK31 transmissions, without using a bulky computer?  PSK31 lets you view ham radio PSK31 transmissions on your iPad. Just set your iPad next to your radio, tune in a PSK31 frequency, and watch the decoded text. 

There's a waterfall display of the audio spectrum, showing all of the PSK31 transmission. Tap on a signal, and PSK31 tunes into that transmission. 

Get your copy of PSK31 right now, and start decoding and displaying PSK31 transmissions in minutes.

## Rankings

- #310,615 — Overall

## Review summary

Overall, the app is workable for PSK31 and generally easy to use, with decent decoding and solid compatibility with external audio gear. However, it is portrait-only (limited waterfall size), noisy in difficult conditions, and UI/updates are lacking. Transmission exists via external hardware but a built-in TX mode is not present and features like PSK63 support are missing. Despite drawbacks, it remains the most viable iOS PSK31 option today for many users.

### Pros

- Works for PSK31 with usable decoding; often praised as reliable
- Easy to use and simple interface
- Good hardware compatibility (works with external audio interfaces like Easy Digi and iMic)
- TX-capable with external gear and potential TX mode in the future

### Cons

- Portrait-only orientation; no landscape support; waterfall is small in portrait
- Noise sensitivity reduces usefulness in noisy environments
- Not updated / development appears stalled
- Decoding quality varies; some modes (e.g., PSK63) not supported
- Rough UI and not very intuitive

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Source: [Chrome-Stats](https://chrome-stats.com/d/id385619882)