Bäume in Wien

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Appearance

Features ​

Detailed overview of all functions in the Bäume in Wien app.

Interactive Map ​

The map is the central element of the app. It visualizes all 230,620 trees recorded in the tree cadastre.

  • Clustering: At low zoom levels, trees are grouped to maintain performance.
  • 3D Buildings: 3D building models can be activated for better orientation.
  • Location: Displays your current position (GPS required).
  • Offline Maps: Map data is stored locally to save data usage.

Tree Data ​

Tap a tree to access all available data:

  • Species: Scientific name and common name.
  • Planting Year: The year the tree was planted (if recorded).
  • Dimensions: Tree height, trunk circumference, and crown diameter.
  • Location: District and address.
  • Tree ID: The unique identification number in the cadastre.

Wikipedia Integration ​

The app automatically loads information from Wikipedia for the respective tree species.

  • Description: Excerpts from the article.
  • Images: Photos of the tree species from Wikimedia Commons.
  • Links: Direct access to the full article.

Tree Rally ​

A gamified mode for discovering tree species.

  • Solo Mode: Collect different tree species in your area and earn achievements.
  • School Mode: Allows teachers to create rallies for school classes using a code.
  • Statistics: Overview of collected species and progress.

Community Trees ​

Not every tree is recorded in the official Vienna tree registry – but you can help change that!

Report Trees ​

  • Location: Provide the exact location via GPS or map selection.
  • Species: Enter the tree species to the best of your knowledge.
  • Visible: Reported trees are immediately visible to all users.

Confirm & Flag ​

  • Confirm: Logged-in users can confirm the existence of reported trees.
  • Flag: Incorrect entries, spam, or trees that no longer exist can be flagged for review.

Verification ​

  • Trees with sufficient confirmations receive "Verified" status.
  • The official "Bäume in Wien" team is identified by a verification badge.

Account Required

Reporting and confirming community trees requires a free account. Register via email or through Google/GitHub.

AR Mode (Beta) ​

Augmented Reality function for identifying trees.

  • Live View: Displays tree information as an overlay on the camera image.
  • Distance: Shows distance and direction to nearby trees.

Statistics ​

Comprehensive statistical analysis of the tree population.

  • Top 10: The most common tree species in Vienna.
  • District Comparison: Distribution of trees across the 23 districts.

Favorites & Notes ​

Manage your personal tree collection.

  • Save: Mark important trees as favorites.
  • Notes: Add private text notes to trees.
  • Photos: Save your own photos directly with the tree (locally).

Offline Availability ​

The tree database is fully available offline. An internet connection is only required for map updates, Wikipedia images, and Wikipedia texts.

Privacy ​

The app respects your privacy.

  • No Tracking: No usage data is sent to third parties.
  • Local: User data (favorites, notes) is primarily stored locally.
  • Open Source: The app's source code is available for review.