MilGPS uses the open-source software and data sources below. Many thanks to everyone behind them.
Map and data sources
| Source | Used for | Licence / attribution |
|---|---|---|
| Apple Maps | Apple map engine | © Apple and its data providers; “Legal” link on the map |
| OpenFreeMap | Vector map and offline packs | OpenFreeMap © OpenMapTiles, data © OpenStreetMap contributors |
| OpenStreetMap | Vector map data, OSM tile source, peaks/huts/water (Overpass API) | © OpenStreetMap contributors, ODbL 1.0 |
| OpenTopoMap | Topographic tile source | © OpenTopoMap (CC BY-SA 3.0), data © OpenStreetMap contributors, SRTM |
| Esri | Imagery and topo tile sources | © Esri and its data providers; Esri terms of use |
| USGS The National Map | US topographic maps and imagery | US public domain |
| Mapzen Terrain Tiles (AWS Open Data) | Offline terrain: slope, hillshade, contours | Attributions below |
| OpenTopoData | Online route elevation profiles | SRTM 90 m (NASA/USGS) |
| World Magnetic Model 2025 | Magnetic declination | NOAA NCEI and BGS, public domain |
Mapzen Terrain Tiles attributions
- ArcticDEM terrain data DEM(s) were created from DigitalGlobe, Inc., imagery and funded under National Science Foundation awards 1043681, 1559691, and 1542736.
- Australia terrain data © Commonwealth of Australia (Geoscience Australia) 2017.
- Austria terrain data © offene Daten Österreichs – Digitales Geländemodell (DGM) Österreich.
- Canada terrain data contains information licensed under the Open Government Licence – Canada.
- Europe terrain data produced using Copernicus data and information funded by the European Union – EU-DEM layers.
- Global ETOPO1 terrain data U.S. National Oceanic and Atmospheric Administration.
- Mexico terrain data source: INEGI, Continental relief, 2016.
- New Zealand terrain data Copyright 2011 Crown copyright (c) Land Information New Zealand and the New Zealand Government.
- Norway terrain data © Kartverket.
- United Kingdom terrain data © Environment Agency copyright and/or database right 2015. All rights reserved.
- United States 3DEP (formerly NED) and global GMTED2010 and SRTM terrain data courtesy of the U.S. Geological Survey.
Open-source software
MapLibre Native (iOS) — BSD 2-Clause
BSD 2-Clause License Copyright (c) 2021 MapLibre contributors Copyright (c) 2018-2021 MapTiler.com Copyright (c) 2014-2020 Mapbox 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.