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Privacy Policy

Version 2026-09-06

Service operator: SpeakCoachLab, operated by Min Xiong
Contact: support@speakcoachlab.com

This Privacy Policy explains how the Service operator identified above ("we," "us," or "our") collects, uses, shares, and retains personal information when you use SpeakCoachLab (the "Service").

1. Who may use the Service

The Service is intended for users age 13 and older. We do not knowingly permit accounts for children under 13. If we learn that we collected personal information from a child under 13 without legally sufficient parental authorization, we will take reasonable steps to delete it. A parent or guardian who believes a child under 13 has provided information may contact us using the email above.

2. Information we collect

Depending on how you use the Service, we may process:

3. Voice, transcripts, and delivery measurements

For voice input, the browser records short microphone-audio segments and sends them to the application backend, which forwards them to OpenAI's transcription API to produce text. The application does not intentionally save those raw audio segments to its database or filesystem; they are handled in memory for transcription and discarded after processing. Public Speaking also calculates browser-observable delivery measurements such as speaking time, pace, pauses, filler-word count, and volume consistency.

For a successfully completed AI evaluation, the Service clears the stored transcript from its application database after the evaluation is generated. If final AI feedback fails, a completed-session transcript may be retained for up to 7 days so feedback can be retried. Content from incomplete or abandoned sessions and other detailed practice content may be retained for up to 365 days under the Service's general content-retention schedule. After that period, detailed practice content such as topics, scores, delivery details, and narrative reports may be redacted while minimal session/accounting records are retained where needed.

4. How we use information

We use personal information to provide and personalize debate and public-speaking practice; generate AI responses, moderation, scores, and coaching; maintain practice history and progress; authenticate and secure accounts; prevent fraud, abuse, and unauthorized access; provide customer support; process one-time purchases and refunds; administer practice access and balances; diagnose service problems; comply with law; and enforce our Terms. On public educational pages where advertising is enabled, Google and participating advertising technology providers may also use information to deliver and measure ads, prevent invalid traffic and fraud, and personalize ads where permitted by applicable law and your consent or other available choices.

5. AI processing

We send practice content and related instructions to OpenAI's API for functions such as speech-to-text transcription, safety moderation, debate responses, and coaching/scoring. Short microphone-audio segments used for transcription are also sent to OpenAI for that purpose. Our current Responses API requests are configured with persistent response storage disabled. OpenAI states that API inputs and outputs are not used to train its models by default unless the API customer opts in to data sharing; under OpenAI's standard API data controls, certain customer content may still be retained in abuse-monitoring logs for a limited period (currently up to 30 days), subject to OpenAI's data controls and legal obligations. Our own application-database retention described above is separate from a service provider's retention. You can review OpenAI's API data controls.

6. Payments, advertising, and other service providers

Stripe processes payment-card information and one-time payment transactions. We receive transaction identifiers and payment status information needed to provide purchased access, maintain purchase history, and process refunds, but we do not store full card numbers. We also use hosting, database/cache, security, and other infrastructure providers that process information on our behalf to operate the Service. We currently use Brevo to deliver transactional messages such as email verification, password reset, account-security, refund/payment-status, and account-deletion notices.

We may use Google AdSense to display advertising on public educational pages. When AdSense is enabled, Google and participating advertising technology providers may collect or receive information from your browser or device through cookies, web beacons, IP addresses, or other identifiers as a result of ad serving. You can review how Google uses information from sites or apps that use its services. You can also review Stripe's Privacy Policy.

7. When we disclose information

We may disclose information to service providers that help us operate the Service; when reasonably necessary to protect users, the Service, or others; to investigate fraud, abuse, or security incidents; to comply with lawful requests or legal obligations; or as part of a merger, acquisition, financing, or sale of substantially all relevant business assets, subject to applicable law. We do not sell personal information. When Google AdSense is enabled on public educational pages, Google and participating advertising technology providers may receive information described in this Policy for ad delivery, measurement, security, fraud prevention, and personalization where permitted. Depending on applicable law, some advertising-related disclosures or uses may be treated as targeted, cross-context behavioral, or personalized advertising, and you may have rights or consent choices concerning those activities.

8. Cookies, advertising technologies, and choices

The Service uses first-party cookies and similar browser storage that are necessary for authentication, session continuity, CSRF/security protections, and core application functions. When Google AdSense is enabled on public educational pages, third parties may place and read cookies on your browser or use web beacons, IP addresses, or other identifiers to collect information as a result of ad serving on the Service.

Where required by applicable law or Google policy, an advertising consent message or Google-certified consent management platform may ask you to make choices about cookies, local storage, personal data use, and ad personalization. Your available choices may depend on your location and the advertising settings offered at the time.

9. Data retention

We retain account information while an account is active and as reasonably necessary afterward for security, dispute resolution, accounting, fraud prevention, and legal obligations. Practice-content retention follows the transcript and 365-day rules described above. Purchase, practice-usage, consent, security, refund, and audit records may be kept longer when reasonably necessary for accounting, fraud prevention, enforcing agreements, resolving disputes, or meeting legal requirements. We delete or de-identify information when it is no longer reasonably needed, subject to technical backup cycles and legal obligations.

10. Account deletion and privacy requests

You may request account deletion from the Account & Plan page. An administrator reviews the request and, when approved, disables account access, removes practice content, and removes or replaces identifying account information. Minimal billing, refund, fraud-prevention, consent, and audit records may be retained when reasonably necessary or legally required.

Depending on where you live, you may have rights to request access to, correction of, deletion of, or a copy of certain personal information, and to appeal certain privacy decisions. You may submit a request through available account controls or by contacting the email above. We may need to verify your identity before completing a request, and applicable law may permit or require us to retain certain information.

11. Security

We use measures designed to protect information, including encryption in transit, access controls, password hashing, secure authentication cookies, rate limits, moderation and abuse controls, audit records, and service-provider security controls. No online service can guarantee absolute security.

12. International processing

The Service and its providers may process information in the United States and other countries where they operate. Those locations may have privacy laws that differ from the laws where you live. We use service providers and safeguards appropriate to the nature of the Service and applicable requirements.

13. Changes to this Policy

We may update this Privacy Policy as the Service, vendors, or legal requirements change. The version date at the top identifies the current policy. For material changes, we will provide notice or request renewed consent when required by applicable law.

14. Contact

Questions or privacy requests may be sent to the contact email shown at the top of this page.