Open Source Licenses

Seedance — AI Video Generation  ·  Last updated: June 24, 2026

The following sets forth attribution notices for the third-party open source software contained in the Seedance iOS app. We thank the open source community for all of their contributions. Each component remains under its own license; the relevant license texts are reproduced below.

Components

ComponentVersionLicense
Alamofire5.11.2MIT
SnapKit5.7.1MIT
SDWebImage5.21.7MIT
MJRefresh3.7.9MIT
IQKeyboardManagerSwift8.0.3MIT
IQKeyboardToolbarManager1.1.6MIT
SwiftProtobuf1.38.0Apache-2.0
Firebase iOS SDK
Core · Analytics · Auth · Firestore · Crashlytics
12.9.0Apache-2.0
Google Sign-In9.1.0Apache-2.0
PromisesObjC2.4.0Apache-2.0
nanopb3.30910.0zlib
TikTok Open SDK
Core · Auth · Share
2.5.0TikTok Developer Terms

The Firebase iOS SDK and Google Sign-In additionally bundle transitive dependencies — including GoogleUtilities, GTMSessionFetcher, GoogleDataTransport, Abseil and gRPC (Apache-2.0), LevelDB (BSD-3-Clause), BoringSSL-GRPC (OpenSSL / ISC) and nanopb (zlib) — each distributed under its respective license shown below.

License Texts

MIT License

Applies to: Alamofire (© Alamofire Software Foundation), SnapKit (© SnapKit Team), SDWebImage (© Olivier Poitrey & contributors), MJRefresh (© M J Lee), IQKeyboardManagerSwift & IQKeyboardToolbarManager (© Iftekhar Qurashi).

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.

Apache License 2.0

Applies to: SwiftProtobuf (© Apple Inc.), Firebase iOS SDK (© Google LLC), Google Sign-In (© Google LLC), PromisesObjC (© Google LLC), and the Google/Abseil/gRPC transitive dependencies listed above.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use these files except in compliance with the License. You may obtain a copy of the License at https://www.apache.org/licenses/LICENSE-2.0.

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

BSD 3-Clause License

Applies to: LevelDB (© The LevelDB Authors), bundled via Firebase Firestore.

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.
  * 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 ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

zlib License

Applies to: nanopb (© Petteri Aimonen).

This software is provided 'as-is', without any express or implied warranty.
In no event will the authors be held liable for any damages arising from the
use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it freely,
subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not claim
     that you wrote the original software.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

TikTok Open SDK

The TikTok Open SDK (Core, Auth, Share) is provided by TikTok Pte. Ltd. and is governed by the TikTok Developer Terms of Service and associated SDK license, not by an OSI open source license.