Document

Third-party materials and licenses

Updated 2026-10-17 · Русский · 한국어

This is an English translation of the Russian original. License texts are given in their original English.

Data

Source	Material	License
국토교통부 / V-World	Aviation zones, aerodromes, parks, cultural heritage sites (Public Data Portal)	KOGL Type 1, with attribution
국토교통부 항공교통본부 / AIM Korea	Active and upcoming NOTAMs (Public Data Portal)	Published aeronautical information, no restrictions on use
OpenStreetMap	Web map basemap, search results, reference metro layer (derived GeoJSON)	ODbL 1.0, © OpenStreetMap contributors
NAVER Map	Basemap in the Android app	Official NAVER SDK, NAVER Cloud Platform terms of service
Open-Meteo	Weather forecast in the Android app: wind, gusts, precipitation, temperature, visibility (open-meteo.com). Resampled to a 0.25° grid over the coverage area and rounded to whole values	CC BY 4.0, Weather data by Open-Meteo.com
NOAA Space Weather Prediction Center	Planetary Kp index and its forecast (swpc.noaa.gov)	US Government data, no restrictions on use

The web map basemap is a vector extract of the Protomaps Basemap build for the territory of Korea in PMTiles format. The file is served from our own infrastructure, so OpenStreetMap Foundation servers are not contacted when the map is shown. V-World raster basemaps and government orthophotos are not used or cached.

Attribution of a source does not mean that government authorities endorse the app.

Libraries

protomaps-leaflet 5.1.0 and @protomaps/basemaps 5.7.2: BSD-3-Clause

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

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 HOLDER 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.

Leaflet 1.9.4: MIT

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

NAVER Maps SDK for Android: NAVER terms

Basemap of the Android app. Used through the official SDK under the NAVER Cloud Platform terms of service; the SDK terms require the NAVER logo on the map.

AndroidX, Jetpack Compose, Kotlin, Capacitor: Apache License 2.0

The libraries of the Android app and the web wrapper are distributed mostly under the Apache License 2.0. The license texts are also included in the metadata of the corresponding AAR dependencies.

Fonts

Onest: SIL Open Font License 1.1
Rubik: SIL Open Font License 1.1

Icons

The outline icons of the site come from the Lucide set (map-pin, layers, triangle-alert, landmark, list-checks, languages and others): ISC license; some icons of the set originate from Feather (MIT). License texts.

Contact

If an attribution is incomplete or wrong, write to [email protected] and it will be fixed in the next update.