Loading...
BETASign in
Effective Date: 3 February 2026
Terms of Use
These Terms of Use govern your access to and use of BlackStack, a service owned and operated by KERNL LIMITED ("we," "us," or "our"). By creating an Account or using the Service, you agree to become bound by these Terms.
1. Company and Definitions
Operator: KERNL LIMITED, a private limited company incorporated in England and Wales.
Service: The BlackStack web app and Chrome extension, including related features.
Account: A registered user account for the Service.
Customer Content: User-created content (snippets) submitted or stored in the Service.
Subscription: A paid, seat-based plan granting access to the Service.
Subprocessors: Third-party providers used to deliver the Service.
2. Eligibility and Account Security
Age Requirement: You must be at least 18 years old to use the Service.
Authority: If you use the Service on behalf of an organization, you represent that you have the authority to bind that organization to these Terms.
Account Security: You are responsible for all activity under your Account and for keeping credentials secure. Account sharing is strictly prohibited; access is enforced on a seat basis.
3. Subscriptions and Billing
Auto-Renewal & Seats: Subscriptions are seat-based and will automatically renew at the end of the billing period unless canceled. Cancellations take effect at the end of the current billing cycle.
Payments: We do not store credit card details; payments are handled by our billing provider, Polar. Missed or failed payments may result in blocked access or suspension. We may change prices at any time. Taxes may apply. Refunds are granted only at our sole discretion.
Billing Discrepancies: “The prorated or estimated prices displayed on our website during subscription changes (including seat upgrades, plan changes, billing-period changes, or product switches) are provided for informational purposes only. The final amount charged is calculated and determined by our billing provider (Polar). As a result, the amount displayed on our website may differ slightly from the final amount charged or shown by Polar. We use reasonable efforts to minimize any discrepancies, but we are not responsible for differences arising from Polar’s billing calculations.”
4. Acceptable Use and Prohibited Data
BlackStack is a productivity tool, not a secure vault. You agree NOT to use the Service for:
- Illegal content, activity, or violations of applicable laws.
- Infringement of intellectual property or the rights of others.
- Distributing malware, disrupting the Service, or attempting to bypass security measures.
- Scraping, crawling, reverse engineering, or attempting to derive source code.
- Spam, abuse, harassment, or interference with other users.
Strict Prohibition on Sensitive Data:
You must not upload or process any Special Category Data (under GDPR Article 9, including health data, biometric data, political opinions), payment card numbers, passwords, secrets, API credentials, or confidential client data. Violation may result in immediate removal, suspension, or termination.
5. Customer Content and Intellectual Property
Your Content: You retain full ownership of your Customer Content. You grant us a worldwide, non-exclusive, royalty-free license to host, process, display, and transmit Customer Content solely to operate and improve the Service. We have no obligation to monitor Customer Content but may remove content that violates these Terms.
Our Property: We retain all right, title, and interest in the Service, including the software, branding, UI, and all intellectual property not belonging to users.
6. Copyright Infringement
We respect the intellectual property rights of others. If you believe material located on or linked to by our Service violates your copyright, please notify us. We will respond to all such notices, including removing the infringing material. We will terminate the accounts of repeat infringers.
7. Third-Party Providers and Service Availability
Subprocessors: The Service relies on Subprocessors. We are not responsible for failures, outages, or security incidents attributable to third parties (e.g., Supabase, Polar, Google).
Availability: We may change, suspend, or discontinue the Service at any time. We do not promise uptime, reliability, or data preservation, and we provide no backup or restore guarantee. You are solely responsible for maintaining your own backups of Customer Content.
8. Disclaimers and Limitation of Liability
Disclaimer: THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE." WE DISCLAIM ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
Limitation of Liability: To the maximum extent permitted by law, we are not liable for any indirect, incidental, special, punitive, or consequential damages, or any loss of profits, revenue, data, or goodwill. Our total liability for all claims is capped at the lower of the fees paid by you in the last 3 months or GBP 100. Nothing in these Terms excludes liability for fraud or for death or personal injury caused by negligence.
9. Indemnification and Sanctions Compliance
Indemnity: You agree to indemnify and hold KERNL LIMITED harmless from claims, damages, and expenses (including legal fees) arising from your Customer Content, your use of the Service, or your breach of these Terms.
US Economic Sanctions: You expressly represent and warrant that your use of the Service is not contrary to applicable U.S. or U.K. Sanctions. Such use is prohibited, and we reserve the right to terminate access in the event of a breach.
10. Account Deletion and Termination
Deletion: You may delete your Account at any time. Deletion is immediate and irreversible, and data may not be recoverable.
Termination: We may suspend or terminate your access at any time for breach, security risk, legal compliance, or suspected abuse. Upon termination, your right to use the Service ends immediately.
11. Governing Law and General Provisions
Jurisdiction: These Terms are governed by the laws of England and Wales. The courts of England and Wales have exclusive jurisdiction over any disputes.
Miscellaneous: These Terms constitute the entire agreement between us. If any part is held invalid or unenforceable, that part will be construed to reflect the parties’ original intent, and the remaining portions will remain in full force. We may update these Terms at any time; continued use constitutes acceptance.