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EventFahrplan is a viewer for event schedules such as Chaos Computer Club e.V. events like Chaos Communication Camp, Chaos Communication Congress or JahresEndVeranstaltungen.

The app is available for Android devices.

Bug reports, feature requests can be submitted as an issue. Please read the instructions in the contribution guide in order to contribute to this project.

Picture of the Camp2023 Schedule on tablet and phone

Table of contents


  • 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 events
  • Add events to favorites list
  • Export favorites list
  • Setup alarms for individual events
  • Add events to your personal calendar
  • Share a link to an event with others
  • Keep track of program changes
  • Automatic program updates (configurable in settings)

Supported languages

Event descriptions excluded

  • Danish 🇩🇰
  • Dutch 🇳🇱
  • English 🇺🇸
  • Finnish 🇫🇮
  • French 🇫🇷
  • German 🇩🇪
  • Italian 🇮🇹
  • Japanese 🇯🇵
  • Lithuanian 🇱🇹
  • Polish 🇵🇱
  • Portuguese 🇵🇹
  • Russian 🇷🇺
  • Spanish 🇪🇸
  • Swedish 🇸🇪
  • Turkish 🇹🇷

Optional integration

  • The feedback system of Frab and Pretalx
  • c3nav - An indoor navigation project
  • Engelsystem - Online tool for coordinating helpers and shifts at large events
  • Chaosflix - Android app for, share Fahrplan favorites with Chaosflix to import them as bookmarks

Android versions

The application is designed to work on both smartphones and on tablets. Android 5.0 (Lollipop) and newer versions are supported.

Event data

  • The app is designed to consume event data published in a specific format as provided by Frab, Pretalx or Wafer. The file format produced by the predecessor software, Pentabarf, cannot be consumed out of the box.
  • In general, it is possible to re-deploy the app for other events which provide the same event file format.

Build instructions

To begin development, open the project in Android Studio.

The customization guide explains in detail how to create an app for your event.

If you want to create your own signed release builds, copy the file in the app folder and rename it to This file contains the signing information which is used in the build process. Be sure to edit the contents of the file to point to your own keystore files.


Text translations are managed on Crowdin. Contributions are welcome!

Sources (English) and translations are synchronized via the Crowdin CLI tool. German is excluded from being managed on Crowdin as long as the maintainer is a native German speaker. New languages must be configured in the Crowdin configuration file crowdin.yaml before translations can be downloaded. The file also contains usage examples.


  • The project was started in 2011 as "CampFahrplan" and was developed by Daniel Dorau. He released the app for the Chaos Communication Camp and the Chaos Communication Congress in the following years. The app served as a digital schedule for thousands of users.
  • In 2013, Tobias Preuss started contributing. Soon after he started to re-deploy the app for other events like FOSSGIS, FrOSCon, MRMCD and other conferences.
  • In August 2017 the project moved to a new location and was renamed to "EventFahrplan" to acknowledge its broader use.


In 2023 & 2024, this project was funded by the NGI0 Entrust Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet program, under the aegis of DG Communications Networks, Content and Technology under grant agreement No. 101069594.

Logo NLnet: abstract logo of four people seen from above

Logo NGI Zero: letterlogo shaped like a tag


Portions Copyright 2008-2011 The K-9 Dog Walkers and 2006-2011 the Android Open Source Project.

Copyright 2013-2024 johnjohndoe
Copyright 2011-2015 Daniel Dorau
Contributions from 0x5ubt13, Adriano Pereira Junior, Akarsh Seggemu,
Александр Рознятовский, aligoush, Andrea Marziali, Andy Scherzinger,
Andreas Schildbach, Animesh Verma, bashtian, bjoernb, Björn Olsson Jarl,
ButterflyOfFire, cacarrara, Caio Volpato, Chase, cketti, codingcatgirl,
Dominik Stadler, entropynil, erebion, ideadapt, isi_ko404, IsoLinearCHiP,
Jasper van der Graaf, Joergi, Julius Vitkauskas, koelnkalkverbot, Larissa Yasin,
lepawa, ligi, lucadelu, Luis Azcuaga, María Arias de Reyna, Mateus Baptista,
Matthias Geisler, Matthias Hunstock, Matthias Mair, MichaelRocks, Miguel Beltran,
mtpa, Nghiem Xuan Hien, NiciDieNase, Noemis, Omicron, Poschi, Qwertele,
Róbert Papp,rotrot, Sjors van Mierlo, Stefan Medack, SubOptimal, taseret,
Teeranai.P, Torsten Grote, Victor Herasme, Vladimir Alabov, Yanicka

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
See the License for the specific language governing permissions and
limitations under the License.