Timetable, substitutions and news for ZSE Bydgoszcz - no login, works offline.
Unofficial app for students of the Zespół Szkół Elektronicznych (school of electronics) in Bydgoszcz, Poland. It reads the school's public websites directly - no login and no personal data collected. Works offline.
Features
Daily and weekly timetable with substitutions applied; the current lesson shows the time left
Class groups: only the lessons you attend (languages, workshops, PE, religion), including several groups of one subject
Substitutions for your class and group, including cancelled lessons, plus notices the school adds under a date (e.g. blood donation)
Notifications about new substitutions (day, lesson, subject and teacher), news and school notices, quiet hours
Days off: no reminders or live notification on holidays, breaks and winter break
Live notification on school days: countdown to the break or the next lesson, what is on now and next, when lessons end (optional)
Notes for upcoming lessons with a reminder the day before or before the lesson
Lesson reminders with the room number
School news read in the app, with photos, search and favourites available offline
Home screen with the current or next lesson, breaks, substitutions and time left until lessons end
Widgets: Next lesson, Day plan, Substitutions, plus a quick settings tile
Commute: in the morning buses and trams to your next lesson (time to spare, last one that makes it), after lessons the way home (when to leave), live delays, without GPS (optional)
Custom subject names and colours, light and dark theme, accent colour, ready-made or custom background colour, wallpaper colours, app icon choice
The app's interface is in Polish. Not affiliated with the school or VULCAN. Inspired by Atom (iOS) by Kacper Górka. Free software under GNU GPL v3 or later.
Screenshots
What’s new
Commute (formerly Departures): to school in the morning, home after lessons, live delays. Days off: no reminders or live notification on holidays and breaks. School notice notifications. New Settings with categories, custom background colour. Time left until lessons end on the home screen and widget. Several groups of one subject. Live notification: current progress, status bar countdown (Android 16+).
How to install
Download the APK from the button at the top of this page.
Allow “Install unknown apps” for your browser or file manager only, not for every app.
Open the downloaded file and confirm the installation.
If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.
Data safety
Every file is checked against its published SHA-256 before it is listed.
Files are scanned for malware on every update.
The permissions each app requests are listed on its own page.
Read the full safety policy for how we test, flag, and delist files.
Frequently asked questions
What is eLektron?
Timetable, substitutions and news for ZSE Bydgoszcz - no login, works offline.
Who develops eLektron?
eLektron is developed by Stanisław Olejnik.
Which Android version does eLektron require?
eLektron requires Android API 26 or later.
What is the current version of eLektron?
The synchronized F-Droid version is 1.0.1.
Which license does eLektron use?
The signed F-Droid metadata lists GPL-3.0-or-later.
