Licenses
Updated 22 October 2026
Sector4 builds on data and software that others have published openly. Here are their authors and their licenses. Thank you to them.
Circuit layouts
Circuit layouts come from Tomislav Bacinger's f1-circuits project, published under the MIT license. The license asks for its text to be reproduced; here it is:
Show the MIT license text
Copyright (c) 2019-2025 Tomislav Bacinger
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.
Track widths
Track widths come from the racetrack-database project of the Institute of Automotive Technology at the Technical University of Munich (TUMFTM), published under the LGPL-3.0 license.
Elevation
Circuit elevation comes from NASA's SRTM data, in the public domain.
Timing
Quali laps draw on public timing data (OpenF1, FastF1).
App font
The Android and iPhone apps use the TeX Gyre Heros font by GUST e-foundry, published under the GUST Font License.
Trademarks
Sector4 is an independent fan game. It is not affiliated with, associated with or endorsed by Formula 1, the FIA or any team. F1, FORMULA 1 and related marks are trademarks of Formula One Licensing B.V.
A question about a license, something missing? Write to contact@sector4.app.