Terms of Service

Last updated: February 2026

Acceptance

By downloading or using Grinn, you agree to these terms. If you don't agree, please don't use the app.

The app

Grinn is a wellness app that encourages daily smiling through short guided sessions. It is not a medical device and does not provide medical advice. If you have health concerns, consult a healthcare professional.

Subscriptions

• Grinn offers optional paid subscriptions (Monthly, Annual, and Lifetime).
• Subscriptions are billed through Apple's App Store or Google Play.
• Monthly and Annual plans auto-renew unless cancelled at least 24 hours before the renewal date.
• You can manage or cancel subscriptions in your device's subscription settings.
• The Lifetime plan is a one-time purchase with no recurring charges.

Your content

Any data you create in the app (journal entries, streaks, preferences) remains yours and stays on your device. We do not access, collect, or share this information.

Intellectual property

The Grinn app, its design, code, and content (including quotes and science summaries) are protected by copyright. You may not copy, modify, or distribute any part of the app without permission.

Disclaimer

Grinn is provided “as is” without warranties of any kind. We are not liable for any damages arising from your use of the app. The scientific information presented is for educational purposes and summarizes published research.

Contact

Questions? Email us at hello@grinnapp.com