## Android
### 39C3 Fahrplan App
* loads the aggregated [`schedule.xml`](https://fahrplan.events.ccc.de/congress/2025/fahrplan/schedules/schedule.xml) provided by the **hub**. It includes all physical and virtual stages, wiki workshops and self-organized sessions – but only if the SoS is assigned to a room.
* Android 5.0 (Lollipop) or newer
* available on [Google Play](https://play.google.com/store/apps/details?id=info.metadude.android.congress.schedule)
* available on [F-Droid](https://f-droid.org/en/packages/info.metadude.android.congress.schedule)
* by [@tbsprs](https://events.ccc.de/congress/2025/hub/en/user/tbsprs) and contributors
* Source code on [GitHub](https://github.com/EventFahrplan/EventFahrplan)
* [Text translations](https://crowdin.com/project/eventfahrplan) - please contribute
* about EventFahrplan - the project behind the app:
* [eventfahrplan.eu](https://eventfahrplan.eu) website
* [State of EventFahrplan 2021, talk at rC3 2021](https://media.ccc.de/v/rc3-2021-cbase-250-state-of-eventfahrpla)
* [State of EventFahrplan 2021, talk at DiVOC R2R 2021](https://media.ccc.de/v/divoc-reboot-to-respawn-2021-25-state-of-eventfahrplan-2021)
* [State of EventFahrplan 2019, lightning talk at 35C3](https://events.ccc.de/congress/2024/hub/en/dereferrer/https://www.youtube.com/watch?v=Z6RC2vElU0U)
### HackerTracker for Android
* loads the aggregated [`schedule.xml`](https://fahrplan.events.ccc.de/congress/2025/fahrplan/schedules/schedule.xml) provided by the **hub**. It includes all physical and virtual stages, wiki workshops and self-organized sessions – but only if the SoS is assigned to a room. Schedule updated every 15 minutes.
* available on [Google Play](https://play.google.com/store/apps/details?id=com.shortstack.hackertracker)
* source code [here](https://github.com/junctor/android)
* by [The Hacker Tracker Team](https://github.com/junctor/hackertracker-about) (from DEF CON)
* **Please** provide feedback as an issue in the source code repo
### c3nav
* venue map and navigation/routing
* available on [Google Play](https://play.google.com/store/apps/details?id=de.c3nav.droid)
* available on [GitHub](https://github.com/c3nav/c3nav-android/releases)
* release on F-Droid in [custom repo](https://f-droid.c3nav.de/fdroid/repo/)
* also usable as [website/PWA](https://39c3.c3nav.de/) but without locating support
## Apple Platforms: iOS, iPadOS, tvOS, macOS
### Congress 39c3 App Store for iOS and iPadOS
* available at [App Store](https://apps.apple.com/de/app/congress-39c3/id941205524) (only iOS >= 26, not for iOS 18)
### vocTV App for iOS and iPadOS (live streams and recordings only)
* available at [App Store](https://apps.apple.com/de/app/voctv/id1519217410) for iOS >= 17
### [HackerTracker for iOS, iPadOS, macOS](https://apps.apple.com/us/app/hackertracker/id1021141595?mt=8)
* loads the aggregated [`schedule.xml`](https://fahrplan.events.ccc.de/congress/2025/fahrplan/schedules/schedule.xml) provided by the **hub**. It includes all physical and virtual stages, wiki workshops and self-organized sessions – but only if the SoS is assigned to a room. Schedule updated every 15 minutes.
* available at [App Store](https://apps.apple.com/us/app/hackertracker/id1021141595?mt=8) for iOS >= 16
* source code [here](https://github.com/junctor/hackertracker-ios)
* by [The Hacker Tracker Team](https://github.com/junctor/hackertracker-about) (from DEF CON)
* **Please** provide feedback as an issue in the source code repo
## Linux
### [Confy](https://confy.kirgroup.net/)
* https://confy.kirgroup.net/: Conferences schedule viewer with libadwaita and made with linux phones in mind
## Web
### [Calendify - 39C3 Fahrplan](https://calendify.com/schedule/rwXgAB34xQe)
* Platform-independent web app.
* Uses official aggregated [`schedule.xml`](https://fahrplan.events.ccc.de/congress/2025/fahrplan/schedules/schedule.xml) from hub. Synchronized every 10 minutes during the event.
* Creation of own schedules on the fly without user registration.
* Saving of own schedules possible after registration.
* Own schedule can be shared by just sending the URL to other people.
* Own schedule can be synced to own calendar via iCal.
* Adding of single talks to own calendar via iCal.
* The [39C3 Fahrplan](https://calendify.com/schedule/rwXgAB34xQe) is part of [CCC Events calendar](https://calendify.com/@CCC/events).
* by [@kitsune](https://chaos.social/@kitsune)
### [HackerTracker - Minimal Web App](https://hackertracker.app/schedule?conf=39C3)
* loads the aggregated [`schedule.xml`](https://fahrplan.events.ccc.de/congress/2025/fahrplan/schedules/schedule.xml) provided by the **hub**. It includes all physical and virtual stages, wiki workshops and self-organized sessions – but only if the SoS is assigned to a room. Schedule updated every 15 minutes.
* available at [hackertracker.app](https://hackertracker.app/schedule?conf=39C3)
* source code [here](https://github.com/junctor/hackertracker-web)
* by [The Hacker Tracker Team](https://github.com/junctor/hackertracker-about) (from DEF CON)
* **Please** provide feedback as an issue in the source code repo
### [Skedz – Offline-first Fahrplan PWA](https://app.skedz.org)
* Platform-independent PWA for viewing and filtering frab-compatible schedules.
* Offline-first with local storage of schedules and personal session selections.
* Own schedule via liking sessions, exportable via iCal.
* Optional local notifications for session start times.
* Filtering by day, room, track, type, language and search term.
* Switching between schedule timezone and device timezone.
* Project website: [skedz.org](https://skedz.org)
* Source code on [GitHub](https://github.com/ysorge/skedz)
* Created during 39C3 as an open source experiment inspired by Calendify schedules
* by [@kitsune](https://chaos.social/@kitsune)
## ics/ical
* [All Events](https://www.geierb.de/~geierb/kalender/39c3-all.ics)
* [Events on main stages only](https://www.geierb.de/~geierb/kalender/39c3-main.ics)
* [Events not on main stages only](https://www.geierb.de/~geierb/kalender/39c3-notmain.ics)
Uses official aggregated [`schedule.json`](https://fahrplan.events.ccc.de/congress/2025/fahrplan/schedules/schedule.json) from **hub**. Synchronized every 10 minutes during the event.
c.f. [last year](https://events.ccc.de/congress/2024/hub/en/wiki/apps/)