Mobile Application

Lublin BusWidget

Offline iOS public transport app for Lublin, Poland, built around GTFS schedule data, route search, stop timetables, route explorer and Home Screen widgets.

Mobile AppiOSPublic TransportGTFSOffline AppWidgetUtilitiesApp Store

Client

Madis In-house Product

Date

2026

Budget

$2 500

Lublin BusWidget

Project Goal

The goal was to make Lublin public transport schedules available in a simple iOS app that works without internet access and gives users quick access to routes, stops and upcoming departures.

Results

Lublin BusWidget was released publicly in February 2026 and updated to version 1.0.1 in March 2026. The project was delivered in 2 weeks with an approximate budget of $2,500.

💰
$2 500
Approximate development budget confirmed by Madis
⏱️
2 weeks
Development timeline confirmed by Madis
📱
iOS
iPhone utility app released on the App Store
🚌
GTFS
Schedule data based on public GTFS data
📴
Offline
Timetables available without internet access

Implementation Process

2026

February

GTFS Data Setup

Prepared public transit schedule data for offline mobile use.

2026

February

iOS App Development

Built search, route explorer, timetable views and favorite stop flows.

2026

February

App Store Release

Released the free iPhone utility and refined the first public version.

Key Features

🕒

Offline Schedules

Users can browse Lublin transit schedules without an internet connection.

🔍

Route and Stop Search

Search supports route numbers, stop names and stop codes.

🕒

Timetable Views

Daily departures are shown in clear hour-by-minute timetable grids.

🧩

Home Screen Widgets

Widgets show upcoming departures for selected stops and bus lines.

🔐

Privacy First

The app requires no registration, has no ads and does not track users.

Schedule and Route Screens

Schedule and Route Screens

Real App Store screenshots showing route search, stop selection and full daily timetable views.

Widget and Offline Access

Widget and Offline Access

The app supports quick Home Screen widget access for favorite stops and works without an internet connection.

Challenge

The product needed to turn GTFS transit data into a clear mobile experience with offline access, route and stop search, daily timetables, direction switching and widget-based quick access.

Solution

Madis built the iOS app, integrated public GTFS schedule data, implemented route and stop browsing, created timetable views and added Home Screen widgets for favorite stops and bus lines.

Technologies Used

iOS

iOS

GTFS

GTFS

Widgets

Widgets

Offline Data

Offline Data

Public Transport Data

Public Transport Data

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