DuoSync Terms and Conditions

Last updated: February 2026

Welcome to DuoSync. By downloading, installing, or using the DuoSync mobile application (“App”), you agree to be bound by these Terms and Conditions (“Terms”). If you do not agree, do not use the App.

1. Acceptance

By accessing or using DuoSync, you confirm that you have read, understood, and agree to these Terms and to our Privacy Policy. You must be at least 13 years of age (or the minimum age in your country) to use the App.

2. License and Apple App Store Terms

You and DuoSync acknowledge that this agreement is between you and DuoSync only, and not with Apple. DuoSync is solely responsible for the App and its content. These Terms do not provide for usage rules that conflict with the Apple Media Services Terms and Conditions (which DuoSync has had the opportunity to review).

The license granted to you for the App is limited to a non-transferable license to use the App on any Apple-branded products that you own or control, as permitted by the Usage Rules in the Apple Media Services Terms and Conditions. The App may be accessed and used by other accounts associated with the purchaser via Family Sharing or volume purchasing.

DuoSync is solely responsible for any maintenance and support for the App. You and DuoSync acknowledge that Apple has no obligation to provide any maintenance or support for the App.

DuoSync is solely responsible for any product warranties. If the App fails to conform to any applicable warranty, you may notify Apple, and Apple will refund the purchase price (if any) for the App. To the maximum extent permitted by law, Apple has no other warranty obligation, and any other claims, losses, liabilities, damages, or expenses attributable to any failure to conform to any warranty are DuoSync’s sole responsibility.

You and DuoSync acknowledge that DuoSync, not Apple, is responsible for addressing any claims by you or any third party relating to the App or your use of it, including product liability claims, claims that the App fails to conform to legal or regulatory requirements, and claims under consumer protection or privacy legislation. These Terms may not limit DuoSync’s liability to you beyond what is permitted by applicable law.

You and DuoSync acknowledge that, if a third party claims that the App or your possession or use of it infringes that third party’s intellectual property rights, DuoSync, not Apple, will be solely responsible for the investigation, defense, settlement, and discharge of any such claim.

You represent and warrant that (i) you are not located in a country that is subject to a U.S. Government embargo or that has been designated by the U.S. Government as a “terrorist supporting” country, and (ii) you are not listed on any U.S. Government list of prohibited or restricted parties.

Developer: DuoSync. Contact for questions, complaints, or claims: hello@duosync.io or visit https://duosync.io. (For mailing address and phone, see https://duosync.io or email us.)

You must comply with applicable third-party terms of agreement when using the App (for example, your wireless data service agreement).

You and DuoSync acknowledge and agree that Apple, and Apple’s subsidiaries, are third-party beneficiaries of these Terms, and that upon your acceptance of these Terms, Apple will have the right (and will be deemed to have accepted the right) to enforce these Terms against you as a third-party beneficiary.

3. Description of Service

DuoSync is a personal wellness and relationship support app that provides suggestions, cycle tracking, reminders, and date ideas. The App is for informational and supportive purposes only. Features may vary between free and paid subscription tiers.

4. Not Medical or Professional Advice

DuoSync is not a medical device and does not provide medical, health, or professional advice. Cycle estimates, suggestions, and reminders are for general informational purposes only and are not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have. Do not rely on the App for contraception, fertility, or health decisions. The App is not intended for use in pregnancy prevention or as a contraceptive.

5. Subscription and Payment

Some features require a paid subscription. Payment will be charged to your Apple ID or Google Play account at confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel subscriptions in your device’s App Store or Play Store settings.

6. Free Trial

If offered, a free trial may be available. At the end of the trial, you will be charged the applicable subscription fee unless you cancel before the trial ends. Trial eligibility and terms may vary.

7. Refunds and Cancellation

Refunds are handled by Apple or Google in accordance with their respective policies. We do not process refunds directly. To request a refund, use the refund request flow in the App Store or Google Play, or contact Apple or Google support.

8. Your Use of the App

You agree to use the App only for lawful purposes and in accordance with these Terms. You may not use the App to harm others, violate any law, or attempt to reverse-engineer or compromise the App or its data. You agree not to use the App for the purpose of harassment, stalking, or unauthorized surveillance. Data you enter is stored locally on your device; you are responsible for keeping your device secure.

9. Partner Consent

If you use DuoSync to track your partner’s cycle (for example, by entering their last period date), you must have your partner’s consent to do so. By using the cycle tracking features, you confirm that you have obtained your partner’s consent to enter and store this information. You may not use the App to track another person’s cycle without their knowledge and agreement.

10. Disclaimer of Warranties

The app is provided “as is” and “as available.” We do not make any promises that it will be uninterrupted, error-free, or free of harmful components. We disclaim warranties to the extent permitted by law, and your use of the app is at your own risk.

11. Indemnification

You agree to indemnify, defend, and hold harmless DuoSync and its developers from and against any and all claims, liabilities, damages, losses, or expenses (including reasonable attorneys’ fees) arising out of or in any way connected with: (a) your access to or use of the App; (b) your violation of these Terms; or (c) any claim by a third party (including your partner) that your entry of their data into the App violated their privacy rights or was done without their explicit consent.

12. Limitation of Liability

To the extent permitted by law, DuoSync and its affiliates, officers, directors, employees, and agents are not liable for any damages—including indirect, incidental, special, consequential, or punitive damages, or loss of profits, data, or goodwill—arising from your use of or inability to use the app. We do not owe you any amount in connection with your use of the app.

13. Intellectual Property

DuoSync and its content, features, and functionality (excluding user-entered data) are owned by us and are protected by copyright, trademark, and other laws. You may not copy, modify, or distribute our content without permission.

14. Changes to the Terms

We may update these Terms from time to time. We will notify you of material changes by updating the “Last updated” date and, where appropriate, through the App or app store listing. Your continued use of the App after changes constitutes acceptance of the revised Terms.

15. Termination

We may suspend or terminate your access to the App at any time for violation of these Terms or for any other reason. You may stop using the App at any time. Upon termination, your right to use the App ceases; provisions that by their nature should survive (including disclaimers and limitation of liability) will survive.

16. Governing Law

These Terms are governed by the laws of the State of Georgia, United States, without regard to its conflict of law principles. Any disputes arising out of or relating to these Terms or the App shall be resolved exclusively in the state or federal courts located in the State of Georgia, and you consent to the personal jurisdiction of such courts.

17. Contact

If you have questions about these Terms and Conditions, please contact us at hello@duosync.io or visit https://duosync.io.

By using DuoSync, you acknowledge that you have read and agree to these Terms and Conditions.