Open Source Licenses

Kay's Records uses the following open source software.

Apache License 2.0 Apache 2.0

Firebase SDK

Firebase Authentication v13.6.0
Firebase Realtime Database v13.6.0
Firebase Analytics v13.6.0
Firebase Crashlytics v13.6.0
Firebase Remote Config v13.6.0
Firebase Cloud Functions v13.6.0
Firebase App Check v13.6.0
Firebase Cloud Messaging v13.6.0

Google SDKs

Google Mobile Ads (AdMob) v10.7.0
Google User Messaging Platform (UMP) v3.2.0
Google Sign-In v1.0.4
Google Play Services (Base) v18.9.0
Google Play Billing Library v8.3.0
Google Play Age Signals v0.0.4
Google Identity (googleid) v1.2.0

AndroidX

ConstraintLayout v2.1.4
Lifecycle Process v2.6.2
Credentials v1.5.0
Credentials Play Services Auth v1.5.0

Tools

External Dependency Manager for Unity (EDM4U)
Copyright Google LLC Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 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.

MIT License MIT

AppleAuth - Sign in with Apple v1.5.0
MiniJSON (bundled in EDM4U)
AppleAuth Copyright (c) 2019 Daniel Lupiañez Casares MiniJSON Copyright (c) 2013 Calvin Rien 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 License BSD

Parse SDK
Copyright (c) 2015-present, Parse, LLC 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.

SIL Open Font License 1.1 OFL

Pretendard (Regular, SemiBold, Bold)
Noto Color Emoji (rendered as a sprite atlas)
Noto Sans (Latin, Greek, Cyrillic)
Noto Sans Symbols
Noto Sans Symbols 2
Noto Sans Yi
Noto Sans CJK JP (Regular)
Noto Sans CJK KR (Bold, Regular)
Noto Sans Mono CJK KR (Regular)
Pretendard Copyright (c) 2021, Kil Hyung-jin (https://github.com/orioncactus/pretendard), with Reserved Font Name 'Pretendard'. Copyright 2014-2021 Adobe (http://www.adobe.com/), with Reserved Font Name 'Source'. Source is a trademark of Adobe in the United States and/or other countries. Copyright (c) 2016 The Inter Project Authors (https://github.com/rsms/inter), with Reserved Font Name 'Inter'. Copyright 2021 The M+ FONTS Project Authors (https://github.com/coz-m/MPLUS_FONTS), with Reserved Font Name 'M PLUS 1'. Noto Color Emoji Copyright 2013 Google LLC Noto Sans (Latin, Greek, Cyrillic) Copyright 2022 The Noto Project Authors (https://github.com/notofonts/latin-greek-cyrillic) Noto Sans Symbols, Noto Sans Symbols 2 Copyright 2022 The Noto Project Authors (https://github.com/notofonts/symbols) Noto Sans Yi Copyright 2022 The Noto Project Authors (https://github.com/notofonts/yi) Noto Sans CJK KR (Regular), Noto Sans CJK JP (Regular) Copyright 2014-2021 Adobe (http://www.adobe.com/) Noto Sans CJK KR (Bold), Noto Sans Mono CJK KR Copyright 2014, 2015 Adobe Systems Incorporated (http://www.adobe.com/) Each of the above Font Software is licensed under the SIL Open Font License, Version 1.1. This license is copied in full below, and is also available with a FAQ at: https://openfontlicense.org SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007 ----------------------------------------------------------- PREAMBLE The goals of the Open Font License (OFL) are to stimulate worldwide development of collaborative font projects, to support the font creation efforts of academic and linguistic communities, and to provide a free and open framework in which fonts may be shared and improved in partnership with others. The OFL allows the licensed fonts to be used, studied, modified and redistributed freely as long as they are not sold by themselves. The fonts, including any derivative works, can be bundled, embedded, redistributed and/or sold with any software provided that any reserved names are not used by derivative works. The fonts and derivatives, however, cannot be released under any other type of license. The requirement for fonts to remain under this license does not apply to any document created using the fonts or their derivatives. DEFINITIONS "Font Software" refers to the set of files released by the Copyright Holder(s) under this license and clearly marked as such. This may include source files, build scripts and documentation. "Reserved Font Name" refers to any names specified as such after the copyright statement(s). "Original Version" refers to the collection of Font Software components as distributed by the Copyright Holder(s). "Modified Version" refers to any derivative made by adding to, deleting, or substituting -- in part or in whole -- any of the components of the Original Version, by changing formats or by porting the Font Software to a new environment. "Author" refers to any designer, engineer, programmer, technical writer or other person who contributed to the Font Software. PERMISSION & CONDITIONS Permission is hereby granted, free of charge, to any person obtaining a copy of the Font Software, to use, study, copy, merge, embed, modify, redistribute, and sell modified and unmodified copies of the Font Software, subject to the following conditions: 1) Neither the Font Software nor any of its individual components, in Original or Modified Versions, may be sold by itself. 2) Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license. These can be included either as stand-alone text files, human-readable headers or in the appropriate machine-readable metadata fields within text or binary files as long as those fields can be easily viewed by the user. 3) No Modified Version of the Font Software may use the Reserved Font Name(s) unless explicit written permission is granted by the corresponding Copyright Holder. This restriction only applies to the primary font name as presented to the users. 4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font Software shall not be used to promote, endorse or advertise any Modified Version, except to acknowledge the contribution(s) of the Copyright Holder(s) and the Author(s) or with their explicit written permission. 5) The Font Software, modified or unmodified, in part or in whole, must be distributed entirely under this license, and must not be distributed under any other license. The requirement for fonts to remain under this license does not apply to any document created using the Font Software. TERMINATION This license becomes null and void if any of the above conditions are not met. DISCLAIMER THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.

Unity Companion License

Input System v1.18.0
In-App Purchasing v5.3.1
TextMesh Pro
Timeline v1.8.10
Mobile Notifications v2.4.3
Newtonsoft JSON v3.2.2
Unity UI (uGUI) v2.0.0

These packages are licensed under the Unity Companion License.

Other Third-Party SDKs

Tenjin SDK

© Tenjin, Inc. Used under the Tenjin SDK license terms.

Third-party Assets

Kay's Records uses the following third-party art assets. Each pack is used under its own license. Unless noted otherwise, these assets are licensed for use in commercial and non-commercial projects, but the raw asset packs may not be redistributed or resold. We gratefully credit the original authors below.

The art packs listed below are used by version 1.x of the App. They are not bundled in version 2.0.0, whose interface artwork is original to the App (the fonts and emoji that version 2.0.0 bundles are credited in the SIL Open Font License section above). They remain credited here for the versions that use them.

Pixel Art Room
by MiDaEm · midaem.itch.io
License: itch.io page terms — commercial use OK; no redistribution/resale of the raw assets; credit appreciated.
PixelArt Kitchen
by MiDaEm · midaem.itch.io
License: itch.io page terms — commercial use OK; no redistribution/resale of the raw assets; credit appreciated.
items16 — 1244 Pixel Item Icons
License: itch.io page terms — commercial use OK; no redistribution/resale of the raw assets; credit appreciated.
Tiny RPG Character Asset Pack
License: itch.io page terms — commercial use OK; no redistribution/resale of the raw assets; credit appreciated.
Pixel Food
License: itch.io page terms — commercial use OK; no redistribution/resale of the raw assets; credit appreciated.
Pixel Food
by WCE
License: itch.io page terms — commercial use OK; no redistribution/resale of the raw assets; credit appreciated.
TinyHouse — Isometric Interiors
by pixel-salvaje · pixel-salvaje.itch.io
License: itch.io page terms — commercial use OK; no redistribution/resale of the raw assets; credit appreciated.
Modern Exteriors
License: Modern Exteriors license — commercial use OK; editing OK; no redistribution/resale; no NFT minting; credits required.
Modern Interiors
License: Modern Interiors full version license — commercial use OK; editing OK; no redistribution/resale; credits required.
Ninja Adventure Asset Pack CC0
by pixel-boy (Pixel-boy & AAA) · pixel-boy.itch.io/ninja-adventure-asset-pack
License: Creative Commons Zero (CC0 1.0) — public domain; no attribution required. Credited here in appreciation.
Super Pixel Effects Gigapack
License: itch.io page terms — commercial use OK; no redistribution/resale of the raw assets; credit appreciated.

License summaries above are provided for convenience. The authoritative license text is the one published on each author's storefront page; please refer to the linked source for the governing terms.

© 2026 KIM YOO BIN. All rights reserved.