Last Updated: December 20, 2025
Version: 1.1
Welcome to Duotone (“Duotone”, “we”, “us”, “our”). This Privacy Policy explains how we collect, use, disclose, and protect your information when you use the Duotone mobile application and related services (collectively, the “Service”).
By using Duotone, you agree to the collection and use of information as described in this Privacy Policy.
Duotone is operated by an individual developer.
If you have questions or requests regarding this Privacy Policy or your data, contact:
Email: support@duotoneapp.com
If enabled in the app, we collect analytics about how users interact with the Service (e.g., feature usage and navigation flows) to improve reliability and user experience. We do not use analytics for advertising.
Note: We do not store your credit card information. Payments are processed by Apple App Store / Google Play.
We use your information to:
Duotone uses AI providers to power limited features:
For these AI features, we only share:
We do not send:
When you join a couple, Duotone is designed to allow shared visibility within the couple based on how you use the app. Depending on your event settings and ownership selections, your partner may see shared items (for example, events marked as “Ours” or otherwise shared in the couple context).
The following remains private and is not shared with your partner by default:
If you delete your account:
We do not sell your personal information.
We use trusted vendors to operate the Service:
Manages subscription status and entitlements
Sends push notifications and manages notification tokens
Helps us understand product usage to improve the Service
Helps us diagnose crashes and fix bugs
Sends transactional emails such as invitations and password resets
These service providers are authorized to process your data only as necessary to provide their services to us.
We may disclose information if we believe in good faith it is necessary to:
If Duotone is involved in a merger, acquisition, or asset sale, your information may be transferred as part of that transaction. We will provide notice if your information becomes subject to a different privacy policy.
We use reasonable administrative, technical, and organizational safeguards designed to protect your information, including:
No system is 100% secure, and we cannot guarantee absolute security.
We retain your information as long as your account is active and as needed to provide the Service.
When you delete your account, your personal data is removed from our active databases immediately. It may remain in encrypted backups for up to 30 days before being permanently overwritten. You are also removed from the couple at that time.
We may retain limited records where required for legal, tax, security, or fraud-prevention purposes (for example, subscription entitlement logs or security logs), but we do not retain your in-app calendar content after deletion.
You can access and update certain information through in-app settings (e.g., profile and preferences).
You can delete your account at any time:
Settings → Danger Zone → Delete Account
This action is permanent.
You can control push notifications via:
We do not send marketing emails unless you explicitly opt in. You may opt out at any time via the unsubscribe link or by emailing support@duotoneapp.com.
(Transactional emails such as password resets or invitations may still be sent when necessary.)
If you reside in certain U.S. states (including California), you may have rights to request access to or deletion of your personal information.
Duotone does not sell personal information and does not share personal information for cross-context behavioral advertising.
To make a privacy request, contact: support@duotoneapp.com
We may request information to verify your identity before fulfilling your request.
If you are located in the EEA or UK, you may have rights under applicable data protection laws, including access, correction, deletion, restriction, objection, and data portability.
To exercise these rights, contact: support@duotoneapp.com
Where applicable, we process personal data on the following bases:
Duotone is not intended for children under 13, and we do not knowingly collect personal information from children under 13. If we learn we have collected personal information from a child under 13, we will delete it.
Your information may be processed in countries other than your country of residence (for example, where our service providers operate). Where required, we rely on appropriate safeguards for international transfers, such as contractual protections.
We may update this Privacy Policy from time to time. If we make material changes, we will notify you by:
Your continued use of the Service after changes become effective constitutes acceptance of the updated Privacy Policy.
For questions, concerns, or privacy requests:
Email: support@duotoneapp.com
Last Updated: December 20, 2025
Version: 1.1
Thank you for trusting Duotone with your information. We are committed to protecting your privacy and providing a secure, delightful experience for you and your partner.