Terms

Welcome to Substash, a subscription tracking browser extension for Chrome, Brave, Edge, Opera, Vivaldi, and other Chromium-based browsers. These Terms of Service (“Terms”) govern your use of our service and explain your rights and responsibilities.

Data collection overview

Substash is designed with privacy in mind. We collect minimal data necessary to provide our subscription tracking service:

  • Email address for secure OTP authentication
  • Subscription data you choose to track (names, costs, billing cycles)
  • Basic usage analytics to improve the service

We do not access your browsing history, personal files, or any sensitive financial information beyond what you explicitly choose to track. Authentication requires only your email address for secure one-time password delivery.

Third-party integrations

Substash uses trusted third-party services to provide our functionality:

  • Supabase: For secure email/OTP authentication, data storage and synchronization

We only request the minimum permissions necessary and do not share your data beyond these essential service providers.

User rights and responsibilities

Your rights:

  • Access and export your subscription data at any time
  • Delete your account and all associated data
  • Control what subscription information you track
  • Request support and provide feedback

Your responsibilities:

  • Use the service for personal subscription tracking only
  • Provide accurate information when tracking subscriptions
  • Keep your account secure and not share login credentials
  • Report any bugs or security issues you discover

Service availability

Substash is currently provided free of charge while we’re in active development. A future “Supporter” tier may be introduced with optional premium features, but a free tier will always remain available.

We aim for high availability but cannot guarantee 100% uptime. We’ll provide notice of any planned maintenance or significant changes to the service, including any future pricing changes.

Changes to these terms

We may update these Terms from time to time. We’ll notify users of any significant changes through the extension or our website. Continued use of the service after changes constitutes acceptance of the updated Terms.

Contact us

If you have questions about these Terms of Service, please email [email protected].