39C3 Schedule APK

39C3 – Power Cycles

Chaos Communication Congress 2025

Hamburg, 27–30 December 2025

• The 39th Chaos Communication Congress (39C3) is the annual four-day gathering of curious minds, hackers, makers, and thinkers, hosted by the Chaos Computer Club and an extraordinary network of volunteers.

• Since its beginnings in 1984, the Congress has been a space to explore technology, question its impact, and imagine bold futures.

What to Expect

• Talks, workshops, and interactive sessions on technology, society, and utopian ideas

• Discussions on the opportunities and challenges of technological progress

• A culture of collaborative creation and critical thinking

• Self-organized events, assemblies, and project showcases

Get Involved

• Volunteer and help make the Congress possible

• Host workshops or discussions within your assembly

• Share your projects and ideas with the community

• Contribute to the open, participatory spirit of the event

About the Schedule App

Designed to help you navigate 39C3 with ease:

• Browse the program by day and room

• View detailed session info (speakers, times, locations, links)

• Search, filter, and mark favorites

• Add sessions to your calendar and set reminders

• Track schedule updates automatically

• Share session links with others

• Comment and vote on talks and workshops

• Integrated indoor navigation via c3nav

• Volunteer coordination through Engelsystem

• Sync with Chaosflix to bookmark talks for later viewing

Languages Supported

• Available in a wide range of languages including English, German, French, Spanish, Japanese, Russian, and more.

• Help expand translations here: https://crowdin.com/project/eventfahrplan

Feedback & Support

• For content-related questions, contact the CCC content team

• Report bugs via GitHub: https://github.com/EventFahrplan/EventFahrplan/issues

• Please include clear steps to reproduce any issues

Design credits:

• Nina Bender & Bernd Volmer

FAQ

Q: When and where will the 39C3 take place?

A: The 39th Chaos Communication Congress will be held in Hamburg, Germany, from December 27th through 30th, 2025. The event spans four days of talks, workshops, assemblies, and social gatherings in a downtown venue easily accessible by public transport.

Q: Who can attend the Congress, and do I need any special qualifications?

A: 39C3 is open to everyone with a curious mind—hackers, makers, artists, activists, students, and anyone interested in technology’s social impact. There are no formal prerequisites, though some workshops and sessions may recommend background knowledge. All you need is an open attitude and a valid ticket.

Q: How do I purchase tickets, and are there any discounts?

A: Tickets go on sale well before the event via the official 39C3 website. Early-bird rates often apply, and there are concession prices for students and low-income attendees. Keep an eye on community channels and the official newsletter for announcements and last-minute ticket drops.

Version History

v1.74.1——26 Jan 2026

The 39C3 Schedule app (Dec 27-30) for the CCC in Hamburg on your Android device Download the latest version of 39C3 Schedule to enjoy new features and updates immediately!

*1.74.1

• Fix crash at app start on devices running Android before Pie 9

• Fix "Event online" links opening with apps which are not the default browser

• Always show "navigate" menu item when details screen is on screen

• Add settings toggles for showing schedule update dialog & for showing app on lockscreen. Thx Andreas W.

• Show error message to users if parsing Engelsystem URL fails

*1.74.0

• Add filters to search screen. Thanks cketti!

• Automatically open session links in app

*1.73.3

• Fix Engelsystem shifts not being cleared from screen when removing Engelsystem URL