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Lukas Kaffer
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Native iOS app

Vienna’s events as a real iPhone app.

The native app for Vienna Event Radar: built in SwiftUI, published on the App Store and deeply integrated with iOS, from widgets and the Live Activity to the calendar. Accounts, favorites and groups are shared with the web platform.

Scope
Concept, design, development and App Store release
Stack
SwiftUI, Supabase, optimized for iOS 27
Available
On the App Store
View on the App StoreSee the web platform

Four tabs, one radar.

Discover, For you, Favorites and Search: the app follows the patterns people know from iOS, with native navigation, gestures and system features instead of a website dressed up as an app.

Discover view with recommendations and Today & Tomorrow
DiscoverRecommendations to swipe through and everything for today and tomorrow at a glance.
For you: the personal radar with chosen interests
For youA personal radar: pick a few interests, and the feed gets sharper with every tip.
Search with quick filters and categories
SearchCategories, quick filters and free search. From iOS 26 on, it understands requests in natural language, right on the device.
Event details for Weinwandern Wien with dates, venue and route
Event detailsDates, venue, route and source in one view, one tap away in Apple Maps or Google Maps.
Actions: set the countdown in advance, save attendance, open the source
Save and planSave it, add it to the calendar, plan it with the group or share it. The countdown can be set in advance.
Map of Vienna with events as markers
MapEvery event on the map of Vienna, filtered by today, this week or free.

Deeply integrated with the iPhone.

The app doesn’t just live in its icon. It shows up where people already look: on the lock screen, in the calendar and in the system search.

  • “Today in Vienna” widgetsFor the home and lock screen. Events can be saved straight from the widget.
  • Live ActivityA countdown to the event on the lock screen that starts on its own a few hours before it begins.
  • Calendar and notificationsAdd events to Apple Calendar, plus reminders and push notifications.
  • Shortcuts and SpotlightFind events through Shortcuts and the iPhone’s system search.
  • Sign in with AppleOr with Google. One account for the app and the web platform.
Wien Event Radar’s Live Activity on the lock screen: Weinwandern Wien is on now

A standalone app, a shared core.

Web and iPhone share data, accounts and groups. The interface is still built entirely for iOS and is maintained, tested and released like a product of its own.

  • One backend for web and appThe same database as the web platform. Accounts, favorites and groups are in sync everywhere.
  • Plan togetherGroups suggest events, vote and settle on a date, whether in the browser or on the iPhone.
  • Tested and monitoredUnit and UI tests, plus error monitoring with Sentry.
  • The App Store listingScreenshots and preview video designed and produced by me.

SwiftUI, MapKit, EventKit, WidgetKit, ActivityKit, App Intents, Supabase, Sentry

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