Decodes Slow Scan Television images from audio
About this app
Following SSTV modes are supported:
• Robot Modes: 36 & 72
• PD Modes: 50, 90, 120, 160, 180, 240 & 290
• Martin Modes: 1 & 2
• Scottie Modes: 1, 2 & DX
• Wraase Mode: SC2-180
Old B/W or unsupported modes can be viewed in "Raw" mode.
On detection of the calibration header of a supported mode, the resulting image will be automatically saved to the "Pictures" directory and can be seen in the Image gallery.
With version 2, running the decoder in the background will not be supported anymore.
Licensed under 0BSD.
What's New in v2.16
Imported from the F-Droid repository index.
Version history
Nov 13, 2025 · 5.2 MB · Android API 24–36 · code 66
Imported from the F-Droid repository index.
SHA-256 61bb0277a84d561f4da57dcf7d69b2d78b222069047bbcfddc8706c41a3a78e2
Mar 1, 2025 · 4.8 MB · Android API 24–35 · code 65
Imported from the F-Droid repository index.
SHA-256 ab28e558eb813ea9c3b47b6cbe83e44912e17d73eb3fe16986c51f688fd0c5cf
Dec 4, 2024 · 4.8 MB · Android API 24–34 · code 64
Imported from the F-Droid repository index.
SHA-256 3fce06f60b37e7d3d2c34a4e105b7087bd2b797ff1979600b2df3715ea14e0d3
Will it run on your device?
78%
- Runs on a broad range of modern Android versions.
- ABI coverage is focused on newer 64-bit devices.
- 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 xdsopl.robot36 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, 2.15 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Robot36 - SSTV Image Decoder 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 Robot36 - SSTV Image Decoder, and a listing is removed when the evidence for it stops holding up.
Get Robot36 - SSTV Image Decoder
Every source we list for xdsopl.robot36 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
61bb0277a84d561f4da57dcf7d69b2d78b222069047bbcfddc8706c41a3a78e2
Signing certificate
4cb9f669e615a1a64aec7fd0b18e25e3190df8f316881e92055c7baa3942249c
Permissions Required
What each permission lets Robot36 - SSTV Image Decoder do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
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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