SkyTrackPro is built on the work of many open-source projects, data providers, and community resources.
This page lists the third-party material we use and gratefully acknowledges the people and projects behind it. Where a license requires attribution, that attribution is provided here.
We host map and terrain data on our own servers, so browsing SkyTrackPro does not expose you to third-party map tracking. For details on how we handle your personal data, see our Privacy Policy.
Our vector maps and terrain are processed and self-hosted by SkyTrackPro. We vectorize the source data ourselves and serve it from our own infrastructure, which means no third-party map provider receives your data while you browse.
The underlying map and terrain data is derived from the following sources, and we credit them with thanks:
Protomaps — basemap tooling and schema. protomaps.com
OpenStreetMap — map data © OpenStreetMap contributors, available under the Open Database License (ODbL). openstreetmap.org/copyright
Mapterhorn — terrain elevation data. mapterhorn.com
Rendering is handled by MapLibre GL, an open-source mapping library, together with our own custom map styles and modifications. maplibre.org
Thermal layers are based on data from kk7 (thermal.kk7.ch), used and self-hosted with permission. We are grateful to kk7 for making this data available to the free-flight community. thermal.kk7.ch
The SkyTrackPro website is built on JScms. jscms.ch
Our native iOS and Android apps are built with Flutter. We gratefully use the following open-source packages from the Flutter and Dart community:
archive, crypto, http, image, shared_preferences, flutter_secure_storage, image_picker, image_gallery_saver_plus2, geolocator, flutter_background_service, permission_handler, sensors_plus, battery_plus, mobile_scanner, file_picker, maplibre_gl, flutter_soloud, vibration, share_plus, url_launcher, wakelock_plus, connectivity_plus, go_router, flutter_reactive_ble, uuid, daylight, pretty_qr_code, cupertino_icons, drift, drift_flutter, sqlite3_flutter_libs, path, path_provider, package_info_plus, intl, and xml.
These packages are distributed under permissive open-source licenses (such as MIT, BSD, and Apache 2.0). Full license texts are available with each package on pub.dev.
SkyTrackPro would not be possible without the open-source community and the data providers above. If you believe something is missing or incorrectly attributed, please contact us via our contact form and we will correct it promptly.
Last updated: May 2026