End User License Agreement
This End User License Agreement (the “Agreement”) is a legal agreement between you (“you”) and Zeyu Guan, an individual developer (“Developer”, “we”, “us”), governing your use of the Sigweeper software application (the “Software”).
By downloading, installing, or using the Software, you agree to be bound by this Agreement. If you do not agree, do not install or use the Software.
Read this first: Sigweeper deletes files permanently.
Files removed by Sigweeper are not moved to the Trash and cannot be recovered by us, by you, or by macOS. Deletion is immediate and irreversible. You are solely responsible for maintaining your own backups before using the Software.
1. License grant
Subject to your compliance with this Agreement, we grant you a personal, non-exclusive, non-transferable, non-sublicensable, revocable license to install and use one copy of the Software on Apple-branded computers that you own or control, for your own personal or internal business purposes.
2. Ownership
The Software is licensed, not sold. Sigweeper is proprietary software, © 2026 Zeyu Guan, all rights reserved. We retain all right, title, and interest in and to the Software, including all intellectual property rights. This Agreement grants you no rights other than the limited license expressly stated in Section 1.
The Software incorporates third-party open-source components, each licensed under its own terms. Those terms are reproduced in our third-party license notices and, where they conflict with this Agreement with respect to those components, those terms govern.
3. Restrictions
You may not, except to the extent this restriction is prohibited by applicable law:
- copy, redistribute, sell, rent, lease, sublicense, or otherwise transfer the Software;
- reverse engineer, decompile, or disassemble the Software;
- modify or create derivative works of the Software;
- remove or obscure any proprietary notices; or
- use the Software to access data you do not own or are not authorized to access.
4. Your data and your responsibilities
The Software operates on Signal Desktop data already stored on your own computer. You represent that you are the lawful owner or authorized user of that data.
You are solely responsible for:
- maintaining adequate backups before deleting anything;
- reviewing and confirming each deletion; and
- any consequences arising from files you choose to delete.
5. Update checks
The Software contacts sigweeper.com to check whether a newer version is
available, and downloads an update if you accept one. No personal data is transmitted.
See our Privacy Statement for details.
6. No affiliation with Signal
Sigweeper is an independent product. It is not affiliated with, endorsed by, sponsored by, or connected to Signal Messenger LLC or the Signal Technology Foundation. “Signal” is a trademark of its respective owner and is used here only to describe compatibility.
7. Disclaimer of warranties
THE SOFTWARE IS PROVIDED “AS IS” AND “AS AVAILABLE”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, WE DISCLAIM ALL WARRANTIES, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT. WE DO NOT WARRANT THAT THE SOFTWARE WILL BE UNINTERRUPTED, ERROR-FREE, OR THAT IT WILL CORRECTLY IDENTIFY, PRESERVE, OR DELETE ANY PARTICULAR FILE.
SIGNAL DESKTOP MAY CHANGE ITS DATA FORMATS AT ANY TIME WITHOUT NOTICE. SUCH A CHANGE MAY CAUSE THE SOFTWARE TO STOP WORKING OR TO BEHAVE UNEXPECTEDLY. WE MAKE NO WARRANTY OF CONTINUED COMPATIBILITY.
8. Limitation of liability
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, IN NO EVENT SHALL THE DEVELOPER BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR FOR ANY LOSS OF DATA, FILES, PROFITS, REVENUE, OR GOODWILL, ARISING OUT OF OR RELATING TO THIS AGREEMENT OR YOUR USE OF OR INABILITY TO USE THE SOFTWARE, INCLUDING THE PERMANENT DELETION OF FILES, WHETHER BASED ON WARRANTY, CONTRACT, TORT (INCLUDING NEGLIGENCE), OR ANY OTHER LEGAL THEORY, AND WHETHER OR NOT WE HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
THE SOFTWARE IS PROVIDED FREE OF CHARGE. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, OUR TOTAL AGGREGATE LIABILITY ARISING OUT OF OR RELATING TO THIS AGREEMENT SHALL NOT EXCEED FIFTY UNITED STATES DOLLARS (US$50.00).
SOME JURISDICTIONS DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES OR THE LIMITATION OF LIABILITY FOR CERTAIN DAMAGES, SO SOME OF THE ABOVE MAY NOT APPLY TO YOU. NOTHING IN THIS AGREEMENT LIMITS LIABILITY FOR FRAUD, GROSS NEGLIGENCE, OR WILLFUL MISCONDUCT, OR ANY OTHER LIABILITY THAT CANNOT LAWFULLY BE LIMITED.
9. Term and termination
This Agreement is effective until terminated. It terminates automatically if you breach it. You may terminate it at any time by deleting the Software. Sections 2, 7, 8, and 10 survive termination.
10. Governing law
This Agreement is governed by the laws of the State of New York, United States, without regard to its conflict-of-laws principles. The exclusive venue for any dispute shall be the state or federal courts located in the State of New York, and you consent to their personal jurisdiction.
11. Changes to this Agreement
We may update this Agreement. The revised version will be posted at this address with an updated date. Continued use of the Software after a change constitutes acceptance.
12. Contact
Zeyu Guan — guanzy0123@gmail.com