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)
Substitutions for your class and group, including cancelled lessons
Notifications about new substitutions (day, lesson, subject and teacher) and news, quiet hours
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 and substitutions
Widgets: Next lesson, Day plan, Substitutions, plus a quick settings tile
Departures from school: next public transport connections to a chosen stop, without GPS (optional)
Custom subject names and colours, light and dark theme, accent 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
New: live notifications (Settings → Notifications) count down to the break or the next lesson on school days, with what is on now and next. New: school notices from the substitutions page (e.g. blood donation). Next lesson widget: "in X min" at every size and the following lesson. Opening the app refreshes substitutions at once; widgets change at the bell. Lessons your class is freed from are no longer shown as ongoing. Timetable and reminder fixes.
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.
