Terms of Service
The world's shortest terms of service. Because legal doesn't have to be painful.
Last updated: December 7, 2025
TLDR (Plain English)
- Use it however you want: Personal, commercial, educational—go for it.
- No warranties: We built this carefully, but software has bugs. Use at your own risk.
- Your data is yours: We don't own anything you create in Mushin.
- Don't be a jerk: No hacking, no spam, no abuse.
- We can change things: We'll update features and these terms as needed.
- No refunds needed: It's free. Forever.
1. Acceptance of Terms
By using Mushin, you agree to these terms. If you don't agree, please don't use the app. These terms may change, but we'll always post the latest version here with the date updated.
2. What Mushin Is
Mushin is a free, open-access web application designed to help you achieve deep focus. It's a tool, not a service with accounts or ongoing obligations. You use it locally in your browser, and we provide the interface.
3. Your Data and Privacy
All data you create in Mushin (sessions, tasks, captures, settings) belongs to you. It's stored locally on your device, and we have no access to it.
You are responsible for backing up your data. We recommend using the export feature regularly. If you clear your browser data or uninstall the app, your data will be lost.
4. Use Rights
You can use Mushin for any lawful purpose: personal productivity, work projects, education, commercial work—whatever helps you focus. There are no restrictions on use cases.
5. Prohibited Activities
Don't do these things:
- Attempt to hack, reverse engineer, or exploit vulnerabilities in Mushin
- Use Mushin to store or transmit illegal content
- Attempt to impersonate Mushin or claim you created it
- Use automated scripts to abuse the service or interfere with other users
- Redistribute Mushin as your own product without attribution
6. No Warranties
Mushin is provided "as is" without any warranties. We've built it with care, but like all software, it may have bugs or issues. We're not responsible for any data loss, productivity loss, or other damages that might result from using (or being unable to use) Mushin.
In plain English: We hope this tool helps you, but we can't guarantee it will work perfectly 100% of the time. Use good judgment and keep backups of important work.
7. Limitation of Liability
Since Mushin is free and we collect no revenue from you, our liability is limited to the amount you paid us: $0. We're not liable for any indirect, incidental, or consequential damages.
8. Donations
If you choose to donate to support Mushin's development, thank you! Donations are voluntary and non-refundable. They don't entitle you to additional features, support, or any other benefits beyond our deep gratitude.
9. Changes to Mushin
We may update, modify, or discontinue features at any time without notice. We'll try to improve things without breaking existing functionality, but we can't guarantee backward compatibility for all features.
10. Changes to These Terms
We may update these terms as Mushin evolves. We'll post the new terms here and update the date at the top. Continued use of Mushin after changes means you accept the new terms.
11. Intellectual Property
The Mushin name, logo, design, and code are owned by the creators. You're welcome to link to Mushin, write about it, or share it with others. If you want to build something inspired by Mushin, we're flattered—just don't copy it wholesale and claim it as your own.
12. Termination
You can stop using Mushin anytime. Just close the tab. Your locally stored data remains on your device until you delete it. We may terminate or suspend access to Mushin if we discover abuse or violations of these terms.
13. Governing Law
These terms are governed by the laws of the jurisdiction where Mushin's creators are based. Any disputes will be resolved through friendly discussion first, and formal arbitration if needed.
14. Contact
Questions about these terms? Reach out via our Support page. We're humans who care about building good software.
15. The Spirit of These Terms
We wrote these terms to protect both you and us legally, but the spirit is simple: we built this tool to help people focus, not to make money or collect data. Use it respectfully, and we'll keep building it with care.