About this app
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.
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included. Updates for iOS 9.2
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 16, 2026 · 5:30 PM $2.99
Screenshots
