Last updated: October 2025
Welcome to Duchenne ("we," "us," or "our"). By downloading, installing, or using the Duchenne mobile application (the "App"), you agree to be bound by these Terms and Conditions ("Terms"). If you do not agree to these Terms, please do not use the App.
These Terms constitute a legally binding agreement between you ("User," "you," or "your") and Duchenne regarding your use of the App.
Duchenne is a mobile application designed to help users train and improve their genuine smile through:
The App uses your device's camera to analyze facial expressions and provide feedback. All processing is done locally on your device.
You must be at least 13 years of age to use the App. If you are under 18, you must have permission from a parent or legal guardian to use the App. By using the App, you represent and warrant that you meet these age requirements.
Users under 13 are strictly prohibited from using the App in compliance with the Children's Online Privacy Protection Act (COPPA) and similar regulations.
We grant you a limited, non-exclusive, non-transferable, revocable license to use the App for personal, non-commercial purposes in accordance with these Terms.
You agree NOT to:
Your privacy is paramount to us. Please review our Privacy Policy to understand how we handle your data.
Key Privacy Points:
The App requires certain permissions to function properly:
You can manage these permissions through your device settings. Revoking permissions may limit certain features but will not affect your existing data.
You agree to use the App responsibly and in compliance with all applicable laws and regulations. You will NOT:
We continuously work to improve the App:
The App, including all content, features, functionality, software code, design, graphics, user interface, and trademarks, is owned by Duchenne and is protected by international copyright, trademark, patent, trade secret, and other intellectual property laws.
Your Content: You retain all rights to photos and data you create or upload through the App. We do not claim ownership of your content.
Our Content: All other content, including the App's design, algorithms, and features, remains our exclusive property.
Important: Duchenne is a training tool for improving smile aesthetics and confidence. It is NOT a medical device and does NOT provide medical, therapeutic, or clinical advice. The App should not be used to diagnose or treat any medical condition.
If you have concerns about facial muscle function, jaw problems, or dental issues, please consult a qualified healthcare professional.
While we strive to help users improve their smile through training, we make no guarantees about specific results. Individual results may vary based on factors including consistency, individual anatomy, and effort.
The App is provided on an "as-is" and "as-available" basis without warranties of any kind, either express or implied, including but not limited to:
To the fullest extent permitted by law, Duchenne and its affiliates, officers, employees, and agents shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to:
Our total liability for any claims arising from your use of the App shall not exceed the amount you paid to use the App.
You agree to indemnify, defend, and hold harmless Duchenne and its affiliates, officers, directors, employees, and agents from any claims, liabilities, damages, losses, costs, or expenses (including reasonable attorneys' fees) arising from:
The App is available for free download and use through the Google Play Store. All app features are available to users at no cost.
Duchenne is distributed through Google Play Store. Your download and use of the App is subject to Google Play's terms of service in addition to these Terms.
We reserve the right to modify our pricing structure or introduce optional paid features in the future. Any such changes will be communicated to users in advance through app updates or notifications.
The App may integrate with third-party services, including:
Your use of third-party services is subject to their respective terms and conditions. We are not responsible for third-party services or their content.
We may release updates, bug fixes, and new features periodically. You are encouraged to keep the App updated to the latest version for optimal performance and security.
We reserve the right to modify these Terms at any time. We will notify you of material changes by:
Your continued use of the App after changes to these Terms constitutes acceptance of the modified Terms.
You may stop using the App at any time by uninstalling it from your device. You can delete all your data through the App settings or your Google account backup settings.
We reserve the right to suspend or terminate your access to the App at any time, with or without notice, for:
Upon termination, your right to use the App will immediately cease. Since all data is stored locally on your device and your Google account, you retain access to your data even after termination.
The App is available worldwide through the Google Play Store, subject to Google's distribution policies. However, we make no representation that the App is appropriate or available for use in all locations. Access to the App may not be legal in certain jurisdictions.
You are responsible for compliance with local laws when using the App.
These Terms shall be governed by and construed in accordance with the laws of your jurisdiction of residence, without regard to its conflict of law provisions.
In the event of any dispute arising from these Terms or your use of the App, you agree to first attempt to resolve the dispute informally by contacting us at [email protected].
If informal resolution fails, any disputes shall be resolved through binding arbitration in accordance with the rules of the American Arbitration Association or similar body in your jurisdiction. You waive your right to participate in class action lawsuits or class-wide arbitration.
If any provision of these Terms is found to be invalid, illegal, or unenforceable, the remaining provisions shall continue in full force and effect. The invalid provision shall be modified to the minimum extent necessary to make it valid and enforceable.
These Terms, together with our Privacy Policy, constitute the entire agreement between you and Duchenne regarding your use of the App and supersede all prior agreements and understandings.
Our failure to enforce any right or provision of these Terms shall not constitute a waiver of such right or provision. No waiver shall be effective unless made in writing and signed by an authorized representative of Duchenne.
You may not assign or transfer these Terms or your rights under these Terms without our prior written consent. We may assign these Terms to any affiliate or successor without restriction.
If you have any questions, concerns, or feedback regarding these Terms, please contact us at:
Email: [email protected]
Legal inquiries: [email protected]
Website: duchenneapp.com
We will respond to inquiries within 5-7 business days.
By using the Duchenne app, you acknowledge that you have read, understood, and agree to be bound by these Terms and Conditions. You also acknowledge that you have read and understood our Privacy Policy.
Thank you for choosing Duchenne to improve your smile and confidence. We're committed to providing you with a safe, private, and effective training experience.