IMPORTANT: PLEASE READ THIS END-USER LICENSE AGREEMENT (“AGREEMENT” OR “EULA”) CAREFULLY BEFORE DOWNLOADING, INSTALLING, COPYING, OR USING THE CHATR CLIENT SOFTWARE (THE “SOFTWARE”).
BY DOWNLOADING, INSTALLING, OR USING THE SOFTWARE, YOU AGREE TO BE BOUND BY THE TERMS OF THIS AGREEMENT. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, DO NOT DOWNLOAD, INSTALL, COPY, OR USE THE SOFTWARE.
1. Parties & Overview
This Agreement is a legal contract between you (either an individual or a legal entity, referred to as “you” or “Licensee”) and the individual maintainers and developers of Chatr (“Licensor,” “we,” “us,” or “our”).
This Agreement governs your use of the Chatr executable binary applications, client libraries, user interfaces, documentation, and associated updates for supported operating systems (including Windows, Android, and other supported platforms). Use of the Chatr online network, relay infrastructure, and account services is additionally governed by the Chatr Terms of Service.
2. Grant of License
Subject to your continuous compliance with the terms and conditions of this Agreement, Licensor grants you a limited, personal, revocable, non-exclusive, non-sublicensable, and non-transferable license to:
- Download, install, and execute the binary object-code version of the Software on personal computers, mobile devices, or workstations that you own or lawfully control;
- Use the Software solely for your personal, private communication or internal lawful business communication in accordance with the accompanying documentation.
3. License Restrictions & Prohibitions
The Software is licensed to you, not sold. Licensor reserves all rights not expressly granted to you in this Agreement. You agree that you will not, and will not permit, encourage, or authorize any third party to:
- Decompile or Reverse Engineer: Decompile, disassemble, reverse engineer, decipher, or attempt to derive the underlying source code, algorithms, or proprietary structures of the Software, except solely to the extent that such restriction is expressly prohibited by applicable non-waivable statutory law;
- Modify or Create Derivatives: Modify, adapt, translate, enhance, alter, or create derivative works of the Software or any portion thereof;
- Redistribute or Commercialize: Sell, resell, rent, lease, lend, sublicense, distribute, publish, assign, or commercially exploit the Software, or make the Software available over a network or service bureau where it can be accessed by multiple unauthorized devices;
- Circumvent Protections: Circumvent, disable, bypass, or tamper with any technological protection measures, cryptographic checks, version gates, or digital signatures embedded in the Software;
- Remove Proprietary Notices: Remove, obscure, deface, or alter any copyright notices, trademark legends, digital watermarks, or proprietary markings affixed to or contained within the Software;
- Malicious or Abusive Use: Use the Software to craft automated spam bots, develop unauthorized alternative client interfaces that bypass server rate limits, or engage in any unlawful activity.
4. Intellectual Property & Ownership
- Exclusive Ownership: You acknowledge and agree that Licensor owns all right, title, and interest in and to the Software, including all copyrights, patents, trade secrets, trademarks, design rights, interface layouts, and other intellectual property rights embodied therein.
- Trademarks: The names “Chatr,” the Chatr logo, and associated brand assets are the proprietary trademarks of the Licensor. No right or license to use any trademark is granted under this Agreement without Licensor’s prior written consent.
- Feedback: If you submit suggestions, ideas, bug reports, or feature recommendations (“Feedback”) to Licensor, you grant Licensor an irrevocable, perpetual, royalty-free, worldwide license to use, incorporate, and implement such Feedback into the Software without any obligation of compensation or attribution to you.
5. Automatic Updates & Modifications
- Updates: The Software may periodically check with Licensor’s servers for available software updates, patches, bug fixes, and feature enhancements. You consent to the Software downloading and installing such updates automatically to ensure security, cryptographic protocol compatibility, and network synchronization.
- Version Sunset: Licensor reserves the right to discontinue support for older protocol versions, persistence epochs, or operating system platforms. Outdated versions may fail closed and cease functioning without prior notice.
6. Local Storage, Security & Cryptographic Responsibility
- On-Device Cryptography: The Software generates, manages, and stores cryptographic private keys and decrypted chat databases locally on your device (utilizing operating system security primitives such as Windows DPAPI or Android Keystore).
- User Responsibility: You are solely responsible for:
- Maintaining the physical and digital security of your device;
- Preventing unauthorized physical or electronic access to your unlocked session;
- Maintaining independent offline backups of essential data.
- Data Irrecoverability: Licensor does not hold your private keys and cannot recover corrupted or deleted local databases.
7. Disclaimer of Warranties (“AS IS”)
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW:
- THE SOFTWARE IS PROVIDED TO YOU STRICTLY ON AN “AS IS” AND “AS AVAILABLE” BASIS, WITH ALL FAULTS AND DEFECTS, AND WITHOUT WARRANTY OF ANY KIND.
- LICENSOR EXPRESSLY DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, QUIET ENJOYMENT, SYSTEM INTEGRATION, AND NON-INFRINGEMENT.
- LICENSOR MAKES NO REPRESENTATION OR WARRANTY THAT THE SOFTWARE WILL MEET YOUR REQUIREMENTS, ACHIEVE ANY INTENDED RESULTS, BE COMPATIBLE OR WORK WITH ANY OTHER SOFTWARE, HARDWARE, OR SYSTEMS, OPERATE WITHOUT INTERRUPTION, BE FREE FROM BUGS, VULNERABILITIES, OR MALWARE, OR THAT DEFECTS CAN OR WILL BE CORRECTED.
- DOWNLOADING, INSTALLING, AND USING THE SOFTWARE IS ENTIRELY AT YOUR OWN RISK.
8. Limitation of Liability
TO THE MAXIMUM EXTENT PERMITTED UNDER APPLICABLE LAW:
- IN NO EVENT SHALL LICENSOR (INCLUDING ITS DEVELOPERS, CONTRIBUTORS, AND OPERATORS) BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE, OR EXEMPLARY DAMAGES WHATSOEVER, INCLUDING DAMAGES FOR LOSS OF PROFITS, LOSS OF CONFIDENTIAL DATA OR FILES, LOSS OF PRIVACY, CORRUPTION OF STORAGE MEDIA, WORK STOPPAGE, DEVICE FAILURE OR MALFUNCTION, OR PERSONAL INJURY, ARISING OUT OF OR IN ANY WAY RELATED TO THE USE OF OR INABILITY TO USE THE SOFTWARE, EVEN IF LICENSOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- NOTWITHSTANDING ANY DAMAGES THAT YOU MIGHT INCUR FOR ANY REASON WHATSOEVER, LICENSOR’S ENTIRE AGGREGATE LIABILITY UNDER ANY PROVISION OF THIS AGREEMENT SHALL BE STRICTLY LIMITED TO THE GREATER OF:
- THE AMOUNT ACTUALLY PAID BY YOU FOR THE SOFTWARE (IF ANY), OR
- FIFTY UNITED STATES DOLLARS ($50.00 USD).
9. Termination
- Term: This Agreement is effective from the moment you download, install, or run the Software and remains in effect until terminated.
- Termination by You: You may terminate this Agreement at any time by deleting and uninstalling all copies of the Software in your possession or control.
- Termination by Licensor: Licensor may immediately terminate this Agreement without notice if you breach any term or condition of this Agreement.
- Effect of Termination: Upon termination, the license granted herein shall immediately cease, and you must immediately discontinue all use of the Software and permanently delete all copies from your devices. Sections 3, 4, 6, 7, 8, 10, and 11 shall survive termination.
10. Export Controls & Compliance
The Software incorporates strong encryption algorithms (including Curve25519, AES-256-GCM, and XChaCha20-Poly1305). You represent and warrant that you will comply with all domestic and international export control laws, customs regulations, and economic sanctions applicable to software containing cryptographic capabilities. You represent that you are not located in an embargoed country and are not listed on any denied-party or restricted-entity list.
11. Governing Law & Dispute Resolution
This Agreement shall be governed by, construed, and enforced in accordance with the substantive laws of the Democratic Socialist Republic of Sri Lanka, excluding its conflict of laws rules. Any dispute, controversy, or claim arising out of or in connection with this Agreement shall be submitted to the exclusive jurisdiction of the competent courts of Sri Lanka (including the Commercial High Court or District Court of Colombo).
12. Miscellaneous
- Severability: If any provision of this Agreement is held to be invalid or unenforceable, such provision shall be severed, and the remaining provisions shall remain in full force and effect.
- Entire Agreement: This Agreement constitutes the complete and exclusive agreement between you and Licensor regarding the Software, superseding all prior oral or written communications, proposals, or representations.
- Amendments: Licensor reserves the right to amend this EULA periodically in connection with new releases or updates. Continued use of new versions signifies acceptance of updated terms.
13. Contact Information
For legal notices, licensing inquiries, or questions regarding this Agreement, contact:
- Email: support@chatr.xerosf.dev
- Developers: Chatr Development Team (Colombo, Sri Lanka)