CHALLY PORTER
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CHALLY PORTER policies

Open Source Licenses

CHALLY PORTER is built on top of open source software. Thank you to everyone who wrote it. Below are the copyright notices and license texts these licenses ask us to reproduce.

Updated September 18, 2026 Operator: CHALLY PORTER (developer: hyodong Lee, individual developer)

1. About this notice

The lists below cover the main open source packages included in the CHALLY PORTER app, grouped by license. Copyright in each package belongs to its own authors, and CHALLY PORTER uses each package under the terms of its license.

Both the MIT and the BSD 3-Clause licenses require the copyright notice and the license text to be reproduced. Section 4 therefore reproduces each license text once, and that text applies to every package listed under it.

These lists name the principal packages the app depends on directly. The libraries those packages depend on in turn carry their own licenses, which are mostly MIT or BSD-style.

2. MIT licensed packages

The following packages are used under the MIT license.

Expo

  • expo
  • expo-apple-authentication, expo-auth-session, expo-crypto, expo-secure-store
  • expo-camera, expo-image, expo-image-manipulator, expo-image-picker, expo-video, expo-video-thumbnails
  • expo-constants, expo-dev-client, expo-file-system, expo-font, expo-localization
  • expo-haptics, expo-linking, expo-notifications, expo-sharing, expo-splash-screen, expo-status-bar, expo-web-browser, expo-clipboard
  • @expo/vector-icons (including the Ionicons icon set)

React and React Native

  • react
  • react-native
  • react-native-safe-area-context, react-native-screens, react-native-url-polyfill, react-native-view-shot
  • @react-native-async-storage/async-storage, @react-native-community/datetimepicker, @react-native-community/netinfo

Navigation

  • @react-navigation/native
  • @react-navigation/native-stack
  • @react-navigation/bottom-tabs

Data and validation

  • @supabase/supabase-js
  • @tanstack/react-query
  • zod

3. BSD 3-Clause licensed packages

Parts of the React and React Native toolchain, along with some of the smaller helper libraries they depend on (source map handling, string formatting, and similar utilities), are used under the BSD 3-Clause license. Copyright in these packages likewise belongs to their respective authors, and the BSD 3-Clause text in section 4 applies to them.

4. License texts

In the texts below, “Copyright (c) <year> <copyright holders>” stands for the copyright line of each individual package.

MIT License

MIT License

Copyright (c) <year> <copyright holders>

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.

BSD 3-Clause License

BSD 3-Clause License

Copyright (c) <year> <copyright holders>. All rights reserved.

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.

5. Contact

If something is missing or wrong in these acknowledgements, please tell us at tunttuntlab2026@gmail.com and we will correct this page.