Effective date: February 14, 2026
These Terms of Service ("Terms") govern your use of the Grindstone mobile application ("App") operated by Grindstone ("we", "us", or "our"). By downloading or using the App, you agree to these Terms.
Grindstone is a personality-based side hustle discovery tool. The App provides quiz-based personality profiling and hustle recommendations for entertainment and informational purposes. Results are based on your self-reported answers and should not be considered professional career, financial, or psychological advice.
You must be at least 13 years old to use the App. By using the App, you represent that you meet this age requirement.
The App offers optional in-app purchases to unlock premium features. All purchases are processed through the Apple App Store or Google Play Store and are subject to their respective terms and refund policies.
You retain ownership of any content you create within the App (e.g., income entries, hustle progress). We do not claim ownership over your data.
The hustle recommendations, income ranges, match percentages, and other information provided by the App are estimates based on general data and your quiz responses. We do not guarantee any specific income, results, or outcomes from following the App's recommendations.
You agree not to:
The App, including its design, text, graphics, algorithms, and code, is owned by Grindstone and protected by intellectual property laws. You may not copy, modify, or distribute any part of the App without our written permission.
The App is provided "as is" and "as available" without warranties of any kind, either express or implied. We do not warrant that the App will be uninterrupted, error-free, or free of harmful components.
To the maximum extent permitted by law, Grindstone shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from your use of the App, including but not limited to loss of income, data, or profits.
We reserve the right to terminate or suspend your access to the App at any time, without notice, for conduct that we believe violates these Terms or is harmful to other users or us.
We may update these Terms from time to time. Continued use of the App after changes constitutes acceptance of the new Terms.
If you have questions about these Terms, contact us at:
support@try-grindstone.com