Download

Get RTTYAF on your phone.

Free and open source from GitHub today — grab the signed APK or build it yourself. A one-tap Google Play build is coming soon.

Available now
Open source
$0

Free from GitHub

The complete app, GPL-3.0 licensed. Sideload the signed APK or build it yourself.

  • Every feature, no limits or accounts
  • Signed release APK on the Releases page
  • Build from source with Gradle
  • Inspect, fork & contribute the code
  • Manual updates (you pull new builds)
Download the APK
Google Play
Soon

Coming to Google Play

A Play Store build is on the way — one-tap install and automatic updates the moment it's live.

  • Automatic background updates
  • One-tap install — no sideloading steps
  • Play Protect verified build
  • Easy to install on a non-techie's phone
  • Supports ongoing development
Coming soon

Heads up: the Play Store build is on an internal test track

A Google Play build is coming soon — one-tap install with automatic updates. Until then, grab the free APK from GitHub; it's the same app.

How to install

Three ways in.

Sideload the APK

Fastest · free
  1. Open Releases on GitHub and download the latest .apk.
  2. Tap the file; allow "install from this source" if Android asks.
  3. Open RTTYAF, grant USB & mic permissions, and pick your rig.
Open Releases

Build from source

For the tinkerers
# clone & build git clone …/RTTYAF cd RTTYAF/ft8cn ./gradlew installDebug
View the repo

Google Play

coming soon · auto-updates
  1. A Play Store build is in the works.
  2. Once live: one-tap Install, no sideloading.
  3. Updates land automatically — nothing else to do.
Coming soon
Before you start

What you'll need.

Device
Android 8+
Phone or tablet, USB-OTG capable
Cable
USB-C → rig
OTG adapter for older phones
Radio
CAT-capable HF rig
IC-7300, FT-891 & many more
Bands
160m – 6m
All RTTY sub-bands supported

No rig handy? You can still explore.

RTTYAF will decode from the phone's microphone, so you can watch the band and learn the interface before you wire up CAT control. See the FAQ for supported radios and cabling.

Grab it and get on the air.

Free on GitHub today. A one-tap Google Play build is coming soon.

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