Last updated: October 2025
Welcome to Duchenne ("we," "our," or "us"). We are committed to protecting your privacy. This Privacy Policy explains our approach to data and privacy when you use our mobile application (the "App").
Important: Duchenne does NOT collect or access your personal data. Your data is stored on your device and backed up to your personal Google account, which only you control.
Duchenne is designed with privacy as a core principle. You own 100% of your data. We do NOT collect, access, or store any of your personal information, photos, or usage data on our servers.
Your data is stored on your device and automatically backed up to your personal Google account, which only you control. We never have access to your Google account or the data stored in it.
Our App requires access to your device's camera to capture photos for smile training purposes. All photos and related data are:
Your training progress, achievements, and statistics are:
To protect your data and training progress, the App uses Android's built-in backup service to automatically back up your data to your personal Google account. This means:
The backup is handled entirely by Google's Android backup service. We never receive, access, or store your backed-up data.
If you sign up for our beta testing program through our website, we only collect your email address to send you updates and beta invitations. This is separate from the App itself and completely optional. You can unsubscribe at any time.
Your data is stored on your device and backed up to your personal Google account. It is used exclusively by the App for:
We never receive, access, or analyze your data in any way. Your data belongs to you and stays in your control.
Your data is protected by your device's built-in security measures and Google's secure backup infrastructure. Since we don't collect or store your data on our servers, there is no risk of:
Your data is secured by your device and your Google account's security. We recommend:
We do not share, sell, rent, or transfer your data to anyone - because we don't have access to it.
Your photos, progress, and all app data remain in your control - stored on your device and backed up to your personal Google account. Your data is never transmitted to us or any third parties.
You have complete control over your data:
Since no data is stored on our servers, there is no need to contact us for data deletion requests. You control all your data through your device and Google account.
Since we don't collect your data, you automatically have complete control and privacy:
If you signed up for our beta program with your email, you can unsubscribe from emails at any time using the unsubscribe link in our emails.
Our App is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us, and we will delete such information from our systems.
Duchenne does not use any third-party analytics, advertising, or tracking services. The App functions entirely offline and does not integrate with external services that could access your data.
The App uses internet permission for:
You can use the App offline, and your data will sync to your Google account backup when you reconnect to the internet.
We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date. Any changes will maintain our commitment to not collecting your data.
If you have any questions or concerns regarding this Privacy Policy, please contact us at:
Email: [email protected]
Website: duchenneapp.com
Our Android app requires the following permissions, all used exclusively for local functionality:
You can manage these permissions in your device settings at any time. Revoking permissions will disable related features but won't affect your existing data.
Your Privacy is Guaranteed:
Duchenne is designed to respect your privacy completely. You own your data, and your smile training journey is yours alone.