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Duomi Compound Interest Calculator Privacy Policy & Disclaimer

Last Updated: August 18, 2025
Effective Date: August 18, 2025

Thank you for using the Duomi Compound Interest Calculator (hereinafter referred to as “the App”). We highly value your privacy and the protection of your personal information. This Privacy Policy explains how the App collects, uses, stores, and shares your information, as well as the related disclaimer.

1. Information We Collect

  1. Local Data
    • Investment amounts, interest rates, trade quantities, and other input data are stored locally on your device and will not be automatically uploaded to servers.
  2. Cloud Sync Data (Optional)
    • The App provides an optional cloud sync feature to allow data backup and multi-device synchronization.
    • If you enable this feature, your input data will be encrypted during transmission and stored on Alibaba Cloud servers.
    • Storage Period: Uploaded data is stored for 1 year and will be automatically deleted after expiration. If you manually delete your data or request account removal within this period, we will process it immediately.
    • If you do not enable cloud sync, your data will remain only on your local device.
  3. Analytics Data
    • To improve product functionality and user experience, the App integrates Umeng Analytics SDK.
    • Umeng Analytics may collect:
      • Device information (model, OS version, language settings, network environment);
      • Usage data (feature usage frequency, session duration, click behavior);
      • App crash logs and performance data.
    • This data is used for analysis and product optimization only. Please refer to Umeng’s privacy policy: https://www.umeng.com/policy
  4. Tracking
    • With user permission, the App may use advertising identifiers (IDFA or similar) for cross-app or cross-website tracking to:
      • Identify user sources;
      • Measure ad campaign effectiveness.
    • You can disable tracking at any time via Settings → Privacy → Tracking on your device.

2. How We Use Your Information

  • Provide and optimize calculation features;
  • Improve user experience and app stability;
  • Offer optional cloud sync and backup services;
  • Analyze user behavior for product optimization and advertising evaluation.

3. Information Sharing and Disclosure

  • The App will not sell your personal information to any third party.
  • Information may be disclosed in the following circumstances:
    • Compliance with laws and regulations;
    • Protecting the App’s and users’ legitimate rights and interests;
    • Sharing necessary data with third-party service providers (e.g., Umeng Analytics, Alibaba Cloud) for analytics or service provision.

4. Third-Party Services

The App may use the following third-party services:

These service providers may independently collect device information and usage data, subject to their own privacy policies.

5. Your Choices

  • You can choose whether to enable cloud sync;
  • You can delete uploaded cloud data at any time or request deletion via contact;
  • Cloud data is stored for 1 year and will be automatically deleted after expiration;
  • You can disable ad tracking in system settings;
  • Uninstalling the App will remove all local data from your device.

6. Children’s Privacy

The App is not intended for children and does not knowingly collect personal information from minors.

7. Disclaimer

The App (Duomi Compound Interest Calculator) provides calculation, simulation, and prediction services. Please read the following disclaimer carefully before use:

1. Not Investment Advice

All results, charts, and simulated data are purely mathematical projections based on your input parameters. They do not constitute any investment advice, financial guidance, or guarantee of returns.

2. Usage Risks

Simulated data cannot reflect actual financial market fluctuations and cannot predict future economic changes. Users should exercise judgment and act based on their own situation.

3. Responsibility Statement

The developer is not responsible for any legal or financial consequences arising from decisions made based on the App’s calculations.

4. Suggested Guidance

Users are encouraged to consider their financial status and risk tolerance. Consulting a certified financial advisor or professional institution is recommended when necessary.

8. Updates to Privacy Policy

We may update this policy due to app changes or legal requirements. The updated policy will take effect immediately with the new app version.

9. Contact Us

For questions or suggestions regarding this Privacy Policy or Disclaimer, please contact: