# Apps
<!-- Migrated from https://events.ccc.de/congress/2025/hub/en/wiki/apps
Items marked TODO need confirmation once 40C3 URLs/releases are known. -->
## Android
### c3lingo
Allows you to listen to the interpretations of talks as well as the original audio **while in the lecture hall**; use streaming.media.ccc.de if you are elsewhere
- [Google Play](https://play.google.com/store/apps/details?id=org.c3lingo.audio)
- [F-Droid](https://f-droid.org/packages/org.c3lingo.audio/)
- On supported devices, can transcribe the audio; consider this an experimental feature that can contain significant mistakes. Speech recognition may use significant power.
- [github.com/stblassitude/c3lingo-audio](https://github.com/stblassitude/c3lingo-audio)
### 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://40c3.c3nav.de/) but without locating support
### 40C3 Fahrplan App
loads the aggregated [`schedule.xml`](https://fahrplan.events.ccc.de/congress/2026/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.
- Compatibility: Runs on Android 6.0 (Marshmallow) and 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/2026/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://www.youtube.com/watch?v=Z6RC2vElU0U)
### HackerTracker for Android
loads the aggregated [`schedule.xml`](https://fahrplan.events.ccc.de/congress/2026/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
## Apple Platforms: iOS, iPadOS, tvOS, macOS
### c3lingo
Allows you to listen to the interpretations of talks as well as the original audio **while in the lecture hall**; use streaming.media.ccc.de if you are elsewhere
- [App Store](https://apps.apple.com/app/c3lingo/id6826512913)
- On supported devices, can transcribe the audio; consider this an experimental feature that can contain significant mistakes. Speech recognition may use significant power.
- [github.com/stblassitude/c3lingo-audio](https://github.com/stblassitude/c3lingo-audio)
### Congress 40C3 App for iOS and iPadOS
- available at [App Store](https://apps.apple.com/de/app/congress-40c3/id941205524)
### 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
<!-- TODO: verify minimum iOS version -->
### [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/2026/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 <!-- TODO: verify minimum iOS version -->
- 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
### [audio.c3lingo.org](https://audio.c3lingo.org)
Allows you to listen to the interpretations of talks as well as the original audio **while in the lecture hall**; use streaming.media.ccc.de if you are elsewhere
- Custom frontend for [Galene](https://galene.org) at [codeberg.org/c3lingo/listen-frontend](https://codeberg.org/c3lingo/listen-frontend)
### [HackerTracker - Minimal Web App](https://hackertracker.app/schedule?conf=40C3)
<!-- TODO: confirm conf code 40C3 -->
loads the aggregated [`schedule.xml`](https://fahrplan.events.ccc.de/congress/2026/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=40C3)
- 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)
c.f. [last year](https://events.ccc.de/congress/2025/hub/en/wiki/apps/)