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Robot36

Robot36 is a free, open-source photo and gallery app for Android. Decodes Slow Scan Television images from audio. It has 517 GitHub stars and is released under the 0BSD license, and you can install it from F-Droid.

github.com/xdsopl/robot36 (opens in a new tab)

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About Robot36

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.

Privacy and F-Droid

F-Droid builds Robot36 from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.

No anti-features flagged on the latest F-Droid build.

Screenshots

  • Robot36 screenshot 1
  • Robot36 screenshot 2

Screenshots from the app's F-Droid listing.

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FAQ

Robot36 FAQ

Still curious? Email info@appsgit.com.

Is Robot36 free and open source?

Yes. Robot36's source code is public on GitHub under the 0BSD license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.

How do I install Robot36?

You can install Robot36 from F-Droid (package xdsopl.robot36); the links are on this page. Its GitHub repository also publishes releases (latest: v2.17).

Is Robot36 still maintained?

The repository's most recent commit was on Oct 3, 2026. Its F-Droid listing was last updated on Sep 18, 2026. appsgit only lists apps whose repository had a commit in the last six months.