39C3 Schedule

Tobias Preuss | Schedule

9 Downloads 16 Views v1.8 7.85 MB 4.1+

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(7.85 MB)

Editor's Overview

39C3 Schedule is a schedule application developed by Tobias Preuss, packaged as a single Android APK of version 1.8 weighing in at 7.85 MB. The package targets Android 4.1+ and above. Below you'll find the publisher's own description, a quick spec sheet, and a short buyer-beware checklist so you know exactly what you're installing before tapping download.

Install Checklist

Only download through the button on this page — never from third-party mirrors or shortened links, which are the most common way malware spreads.
File size is a light 7.85 MB, so it installs quickly even on modest connections.
This build is signed by "Tobias Preuss" — always verify the developer name matches what's listed on the app's official store page before installing an update.
After install, Android may prompt you to allow "Install from unknown sources" — approve only this one install, then revoke the permission in Settings > Apps > Special access.
We link directly to the APK file or the publisher's repository; we do not modify the binary. Always run a virus scan after any sideloaded install.

About this app

Conference program app for the Chaos Communication Congress

The 39th Chaos Communication Congress (39C3) takes place in Hamburg
on 27–30 Dec 2025, and is the 2025 edition of the annual four-day
conference on technology, society and utopia organized by the Chaos
Computer Club (CCC) and volunteers.

Congress offers lectures and workshops and various sessions on a
multitude of topics including (but not limited to) information
technology and generally a critical-creative attitude towards
technology and the discussion about the effects of technological
advances on society.

Starting in 1984, Congress has been organized by the community and
appreciates all kinds of participation. You are encouraged to
contribute by volunteering, setting up and hosting hands-on and
self-organized sessions with the other components of your assembly
or presenting your own projects to fellow hackers.

https://events.ccc.de/congress/2025/

Features
* View program by day and rooms (side by side)
* Custom grid layout for smartphones (try landscape mode 🙃) and tablets
* Read detailed descriptions (speaker names, start time, room name, links, ...) of sessions
* Search and filter through all sessions
* Add sessions to favorites list
* Export favorites list
* Setup alarms for individual sessions
* Add sessions to your personal calendar
* Share a website link to an session with others
* Keep track of program changes
* Automatic program updates (configurable in settings)
* Vote and leave comments on talks and workshops
* Integration with the c3nav indoor navigation project https://c3nav.de
* Integration with the Engelsystem project https://engel.events.ccc.de - Online tool for coordinating helpers and shifts on large events
* Integration with the Chaosflix https://github.com/NiciDieNase/chaosflix - Android app for http://media.ccc.de, share Fahrplan favorites with Chaosflix to import them as bookmarks

🔤 Supported languages
(Session descriptions excluded)
* Danish
* Dutch
* English
* Finnish
* French
* German
* German (Austria)
* Italian
* Japanese
* Lithuanian
* Polish
* Portuguese (Brazil)
* Portuguese (Portugal)
* Russian
* Spanish
* Swedish
* Turkish

💡 Questions regarding the content can only be answered by the
content team of the Congress. This app simply offers a way to
consume and personalize the conference schedule.

💣 Bug reports are very welcome. It would be awesome if you
can describe how to reproduce the particular error. The issue
tracker can be found here:
https://github.com/EventFahrplan/EventFahrplan/issues

🎨 39C3 Power Cycles. Design by Nina Bender and Bernd Volmer

Details

Version	v1.8
Size	7.85 MB
Developer	Tobias Preuss
Category	Schedule
Package	info.metadude.android.congress.schedule
Android	4.1+
Last Updated	Oct 29, 2026
Downloads	9

Frequently Asked Questions

Is 39C3 Schedule free to download?
Yes. The APK file linked from this page is free. The developer may offer in-app purchases once installed, but obtaining the installer itself costs nothing.

What Android version does 39C3 Schedule require?
Android 4.1+ or newer. Installing on older devices may cause crashes or refuse to install.

Is 39C3 Schedule safe to install?
We link to the exact APK published by Tobias Preuss. We do not modify the file. Still, as with any sideloaded app, scan it with a reputable antivirus before opening it, and only grant permissions the app genuinely needs.

How do I update 39C3 Schedule?
Install the newer version on top of the old one — Android will keep your data. If the signature differs, uninstall first (you may lose local progress).

Why is the app not installing?
Common causes: not enough storage, an older Android version than 4.1+, or a conflicting build already installed. Free up space, check your OS version, and uninstall any previous copy before retrying.

How to Download & Install 39C3 Schedule

Tap the Download APK button above and save the file to your device.
Open your device Settings → Security (or Apps → Special access → Install unknown apps) and allow your file manager or browser to install unknown apps for this one file only.
Open the downloaded info.metadude.android.congress.schedule.apk file from your Downloads folder.
Tap Install and wait for Android to finish.
Open «39C3 Schedule» by Tobias Preuss and grant only the permissions it actually needs.
Revoke the "unknown sources" permission once you are done installing.

Note: this page hosts or links to the installer only. The application name, icon and description are provided for identification. All trademarks belong to their respective owners.