RX/TX capable WSPR client
About this app
First WSPR client for android that can not only transmit beacon signals using phone's audio output, but also receive and decode beacons using phone's audio input.
It can use device's camera flash to trigger yout radio's transmit circuitry, GPS to automaticaly update your GRID location the app transmits, and network to send received packets to wsprnet.org.
Most of permissions are not required if those features are disabled in settings (which are disabled by default).
Licensed under GPL-3.0-only, by TheMetallists.
What's New in v0.53
Imported from the F-Droid repository index.
- More issues with timing has been fixed.
Version history
Dec 22, 2025 · 8.7 MB · Android API 16–36 · code 53
Imported from the F-Droid repository index.
- More issues with timing has been fixed.
SHA-256 714e56ae2182875942bced95d00efdae7be0f3434d26347a5a80287b7f4b1b4d
Dec 13, 2025 · 8.6 MB · Android API 16–36 · code 52
Imported from the F-Droid repository index.
- Fixed Foreground Service flags, infinite waiting
SHA-256 b28075486218d132486a1425fbf1c296243d949bf4362e6e97fa72836ed171d1
Nov 6, 2025 · 8.6 MB · Android API 16–36 · code 51
Imported from the F-Droid repository index.
- - Partial library and toolchain updates (while trying to keep Android 4 compatibility)
- - Exposed internal volume control for bluetooth CAT compatibility
- - Added random offset to the tone frequency to avoid interference with other transmitters
- - Added audio input selection option for various CAT interface options
- - Added MediaCapture mode that allows decoding audio from SDR apps or browsers
SHA-256 505efebe00fe35cdd412845fc9189e2fe101f65ccda8066cc5f12f1186d9b97d
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be aq.metallists.loudbang is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 0.52 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Loud Bang first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Loud Bang, and a listing is removed when the evidence for it stops holding up.
Get Loud Bang
Every source we list for aq.metallists.loudbang is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
714e56ae2182875942bced95d00efdae7be0f3434d26347a5a80287b7f4b1b4d
Signing certificate
a32993b759b48b2e7e4735ffc15764e4e882cb5717537bca73184047d95d056c
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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