Third Party Licenses

Third-Party Licenses

Last Modified: May 12, 2026

Delve Divers uses the following third-party software, services, and libraries. This page provides the required license notices and attribution for each.

Spine Runtimes

Spine Runtimes License Agreement Last updated September 24, 2021. Replaces all prior versions.

Copyright (c) 2013-2021, Esoteric Software LLC

Integration of the Spine Runtimes into software or otherwise creating derivative works of the Spine Runtimes is permitted under the terms and conditions of Section 2 of the Spine Editor License Agreement: http://esotericsoftware.com/spine-editor-license#s2

Otherwise, it is permitted to integrate the Spine Runtimes into software or otherwise create derivative works of the Spine Runtimes (collectively, “Products”), provided that each user of the Products must obtain their own Spine Editor license and redistribution of the Products in any form must include this license and copyright notice.

THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC “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 ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) 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 THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Third-Party Licenses used by the Spine Runtimes:

MIT https://opensource.org/licenses/mit-license.php

  • cJSON (spine-c), Copyright (c) 2009 Dave Gamble
  • dkjson (spine-lua), Copyright (c) 2010, 2011, 2012 David Heiko Kolf
  • SharpJson (spine-csharp), Copyright (c) 2016 Patrick van Bergen and Adriano Tinoco d’Oliveira Rezende
  • System.Collections.Generic.List (spine-csharp), Copyright (c) 2004-2005 Novell, Inc, Copyright (c) 2005 David Waite

WebGL

Copyright 2021 The Khronos Group Inc.

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

THE MATERIALS ARE 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 MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.

Firebase iOS SDKs

Copyright Google LLC

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.

The following Firebase SDKs are used in this application: Firebase Auth, Firebase Firestore, Firebase Functions, Firebase Cloud Messaging, Firebase App Check, Firebase Crashlytics, and Firebase Admin SDK (server-side).

jose (JavaScript Object Signing and Encryption)

Copyright (c) Filip Skokan

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.

License: MIT — https://opensource.org/licenses/mit-license.php

Apple StoreKit and App Store Services

In-app purchases are processed through Apple’s App Store using StoreKit. All purchase transactions are subject to Apple’s Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Apple’s privacy policy applies to all payment data processed through the App Store: https://www.apple.com/legal/privacy/

Firebase/Firestore Services

Firebase/Firestore, provided by Google LLC, is used for storing and synchronizing data, including personal and gameplay data.