# PSKer > PSK31 receiver and transmitter for amateur radio communication. (iPhone/iPad app by Mark Oskin.) - Source: https://appshunter.io/ios/app/psker/id506427138 (this page in markdown: same URL + `.md`) - Developer: [Mark Oskin](https://appshunter.io/developer/506427141) - Category: Utilities - Price: $2.99 - Rating: 1.77/5 from 22 App Store ratings · 53 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 1 MB - Languages: English - Released: 2012-03-11 - Data updated: 2026-07-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/psker/id506427138/reviews.md ## What is PSKer? PSKer is a PSK31 receiver and transmitter. Features: * PSK31 send/receive * Universal app * Landscape mode on the iPad, Portrait mode on the iPhone/iPad * Configurable macros for common messages (CQ, ...) * Automatic frequency locking * Realtime sonogram w/zoom view * Support for mic and line-in receive, and speaker-out/line-out transmission. Note the desktop version is free and can be downloaded at http://ke7sch.net/psker/PSKer.zip You can run the iOS version on your desktop too if you like. ## Key features - PSK31 send/receive - Universal app - Configurable macros - Automatic frequency locking - Realtime sonogram w/zoom - Mic/line-in receive, speaker/line-out transmit ## Recent user reviews (10 of 53) All indexed reviews: https://appshunter.io/ios/app/psker/id506427138/reviews.md ### 4/5 — So far so good! *2021-02-08, version 1.2* So far, this app is doing what I need it to do: get me on the air with PSK31. I use a small speaker next to my iPad to receive the signals, and use a hand mic and VOX for transmitting. Only issue I have isn’t really with the app itself: I also log on my iPad, so I can’t have my log open AND use the app. I guess I need to hand log during PSK31 and then transfer into my logging program later. ### 5/5 — Psker *2020-03-19, version 1.2* Works wonderfully. I made myself a small tnc with two transistors that uses the mic dc bias as power supply. Note that the audio comes out on one channel only. ### 1/5 — Wasted $2.99 *2019-10-22, version 1.2* This app does not work since it does not show up on privacy or in the app list you will not be able to have it listen to any radio signal. Total waste of money. ### 1/5 — Doesn’t receive *2019-06-04, version 1.2* This app doesn’t work. Will send PSK but doesn’t receive. Waste of $3 ### 1/5 — Doesn’t work anymore *2019-06-02, version 1.2* Looks like this app hasn’t been updated in awhile and that’s a real shame. It WAS the best PSK app for iPhone/iPad. Now, it just flat out doesn’t work on recent versions of iOS. I’ve had the app for years, but haven’t used it in awhile. Much to my disappointment, I opened it up today and it just doesn’t work. Just compared to the other PSK app, it appears this one needs to be updated to allow it to ask for permission to use the microphone (for audio input). This app doesn’t have a setting for it, the competing app (which frankly isn’t as good - but it works), does have that setting. Let’s hope the developer updates this app and I’ll be happy to give it a high rating. 73, KI4ASK ### 1/5 — iPad Pro *2019-03-28, version 1.2* I try using this app and it will not work on iPad Pro. It needs some updating because of 64 bit ? Other then that waste of money. ### 1/5 — Does not work at all *2019-03-02, version 1.2* No display. Refund please ### 1/5 — Didn’t receive anything *2019-02-23, version 1.2* No signal on waterfall using Ipad iOS 12.1.4. ### 1/5 — Line/mic inputs don’t work *2019-02-02, version 1.2* No signal input, no waterfall. Crashes. Running iOS 12. ### 1/5 — Help *2017-11-22, version 1.2* Trying to use this app with Elecraft KX2 and it keeps crashing. Any updates coming in the near future? ## Frequently asked questions about PSKer ### What is PSKer? PSKer is an application designed to function as both a receiver and transmitter for PSK31 digital signals, commonly used in amateur radio. It allows users to send and receive messages using this specific digital mode. ### What are the key features of PSKer? Key features include PSK31 send/receive capabilities, universal app compatibility, configurable macros for common messages, automatic frequency locking, a real-time sonogram with zoom view, and support for various audio input/output methods. ### Is PSKer free to use? Yes, based on the provided information, PSKer is a free application. There are no mentions of in-app purchases or advertisements, indicating it is available at no cost. ### What devices is PSKer compatible with? PSKer is a universal app, meaning it is designed to work across different Apple devices. It supports landscape mode on iPads and both landscape and portrait modes on iPhones and iPads. ### How can I use PSKer for amateur radio? You can use PSKer to communicate via PSK31 digital mode. Connect your device's audio input/output to your radio, configure the app with your settings, and utilize features like macros and automatic frequency locking for efficient communication. ## Version history (last 4 releases) ### 3 — 2026-05-16 Complete rewrite update for modern iOS. Sorry it took so long my former users. ### 1.2 — 2014-10-03 This app has been updated by Apple to display the Apple Watch app icon. ** New in version 1.2. Interim release. I'm still working on a major update, but I wanted to get this out quickly to fix a major issue that showed up with iOS 8. Changes in this version: -- iOS 8 compatibility. Fixed a bug that causes the text display to go crazy. However, iOS 6 (or higher) is now required. -- Different screen sizes are now supported -- Macros now work on the input line as well as in macros. -- iPad version includes \S for QSO macro. ### 1.1 — 2012-03-24 - Fixed an issue with keyboard input on the iPhone in the configuration options overlapping with the finish button. - Added a few more macro keys. - Fixed an issue with v5.1 compatibility. ### 1.0 — 2012-03-07 No release notes. ## Apps similar to PSKer | App | Rating | Price | Category | | --- | --- | --- | --- | | [Feld Hellschreiber](https://appshunter.io/ios/app/feld-hellschreiber/id650758963) | 2.8 (4) | $2.99 | Utilities | | [PocketPacket](https://appshunter.io/ios/app/pocketpacket/id336500866) | 3.6 (12) | $4.99 | Utilities | | [BeaconAid-HF](https://appshunter.io/ios/app/beaconaid-hf/id307460004) | 3.0 (5) | $0.99 | Utilities | | [FT8 Decoder](https://appshunter.io/ios/app/ft8-decoder/id1592847401) | 4.3 (8) | $1.99 | Utilities | | [Morse Decoder Pro](https://appshunter.io/ios/app/morse-decoder-pro/id698226482) | — | $9.99 | Utilities | | [iWSPR TX - QRP Hamradio](https://appshunter.io/ios/app/iwspr-tx-qrp-hamradio/id781433570) | 3.7 (9) | $3.99 | Utilities | --- *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 2026-07-06.*