Licences

Open-source software in the apps

Two Wheels Apart for iOS and Android is built with the following open-source software. We thank its authors. Where a licence asks for it, its full text is linked below.

MapLibre Native (iOS and Android), BSD 2-Clause License. Copyright © 2021 MapLibre contributors, Copyright © 2018-2021 MapTiler.com, Copyright © 2014-2020 Mapbox. MapLibre Native itself contains further open-source components; they are listed in its licence file.

Android only, each under the Apache License 2.0: Android Jetpack (AndroidX, Jetpack Compose, Material 3, Activity, Lifecycle, DataStore, WorkManager, Biometric, Browser, ExifInterface, Credential Manager, SplashScreen), Kotlin standard library, kotlinx.coroutines, kotlinx.serialization, OkHttp (Square, Inc.), Coil (Coil Contributors), and the icons of the Android app, Material Symbols (Google).

Android only, used under Google’s own terms: Google Play services Location, Google Play Billing Library, Sign in with Google (Google Identity Services).

Map style: built with Protomaps Basemaps (BSD 3-Clause License), in the colours of the Liberty style of OpenFreeMap that the map used before (design under CC BY 4.0, © OpenMapTiles). Map icons: Protomaps basemaps-assets, derived from the MIT-licensed icons of Tangram.

Typefaces: League Spartan (in the apps and on the website) and Noto Sans (map labels), each under the SIL Open Font License 1.1.

Licence text of MapLibre Native (BSD 2-Clause)

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Open-source software on the website

League Spartan, SIL Open Font License 1.1.

Aerial and satellite imagery

The satellite view of the apps shows Esri World Imagery worldwide. Where mapping agencies publish aerial images as open data, our own server lays them on top; when Esri cannot be reached and without a connection, our server supplies Copernicus Sentinel-2 satellite imagery. We change the open images technically: they are reprojected, cut into tiles, compressed and joined at borders. The sources and their licences:

Satellite imagery worldwide

Powered by Esri. World Imagery: Esri, Vantor, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community. Used under the terms of the ArcGIS Location Platform; your device loads the imagery directly from Esri, we do not store it.

Aerial images in Germany

Baden-Württemberg: © LGL-BW (2026), www.lgl-bw.de ( dl-de/by-2-0 )

Bavaria: Bayerische Vermessungsverwaltung, www.geodaten.bayern.de (Daten verändert) ( CC BY 4.0 )

Berlin: Geoportal Berlin ( dl-de/zero-2-0 )

Bremen: © GeoBasis-DE/Landesamt GeoInformation Bremen (2026) ( CC BY 4.0 )

Hamburg: Freie und Hansestadt Hamburg, Landesbetrieb Geoinformation und Vermessung (LGV) ( dl-de/by-2-0 )

Hesse: © HVBG (Daten verändert) (free use under § 18 of the Hessian surveying act (HVGG))

Lower Saxony: © GeoBasis-DE/LGLN 2026, Daten geändert ( CC BY 4.0 )

North Rhine-Westphalia: Geobasis NRW ( dl-de/zero-2-0 )

Rhineland-Palatinate: ©GeoBasis-DE / LVermGeoRP (2026), www.lvermgeo.rlp.de [Daten bearbeitet] ( dl-de/by-2-0 )

Saarland: © GeoBasis DE/LVGL-SL (2026) ( dl-de/by-2-0 )

Saxony: Quelle: GeoSN ( dl-de/by-2-0 )

Saxony-Anhalt: © GeoBasis-DE / LVermGeo ST ( dl-de/by-2-0 )

Schleswig-Holstein: © GeoBasis-DE/LVermGeo SH/CC BY 4.0 (Quelle verändert) ( CC BY 4.0 )

Thuringia: © GDI-Th ( CC BY 4.0 )

Aerial images in other countries

Austria: Datenquelle: basemap.at ( CC BY 4.0 )

Switzerland: © swisstopo ( swisstopo terms of use )

France and Monaco: IGN, BD ORTHO®, mise à jour 2026 ( Licence Ouverte 2.0 )

Spain: Obra derivada de PNOA-MA CC BY 4.0 scne.es ( CC BY 4.0 )

Italy: Ortofoto AGEA, Agenzia per le Erogazioni in Agricoltura ( CC BY 4.0 )

Netherlands: Beeldmateriaal.nl ( CC BY 4.0 )

Flanders and Brussels: Bron: Luchtopnamen Digitaal Vlaanderen ( Modellicentie voor gratis hergebruik v1.0 )

Wallonia: Source: Service public de Wallonie (SPW) - Orthophotos - Vues aériennes les plus récentes ( CC BY 4.0 )

Slovenia: Geodetska uprava Republike Slovenije, DOF025 ( CC BY 4.0 )

Poland: Ortofotomapa: GUGiK (geoportal.gov.pl) (free of charge under Art. 40a of the Polish geodetic and cartographic law)

Estonia: Ortofoto: Maa- ja Ruumiamet 2026 ( open data licence of the Maa- ja Ruumiamet )

Fallback and offline satellite imagery

Europe (EU, EFTA, United Kingdom, Turkey, Western Balkans): European Union's Copernicus Land Monitoring Service information (HR Image Mosaic 2018, modified) ( Copernicus data policy )

Rest of the world and the sea: EOxCloudless https://cloudless.eox.at by EOX IT Services GmbH (Contains modified Copernicus Sentinel data 2016 & 2017) ( CC BY 4.0 )

The use of Copernicus data does not imply any endorsement by the European Union. In Brandenburg, Mecklenburg-Western Pomerania and countries without open aerial images the app shows Esri World Imagery.

Map data and other sources

Map data © OpenStreetMap contributors, available under the Open Database License. All data sources (map tiles, satellite imagery, elevation data, place data, travel information) are listed in the Imprint.

Search, place names, place details and routes outside Germany: Search by LocationIQ.com, with data from OpenStreetMap. Routes in Germany come from our own routing server (OSRM).