Legal

Privacy Policy

Effective date: April 10, 2026 | Last updated: May 11, 2026

DuoAccent ("we," "us," or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, share, and safeguard your personal information when you use our accent training platform, including our website at duoaccent.com and our mobile application (collectively, "the Service").

1. What Data We Collect

Account Information

When you create an account, we collect your email address, name, password (managed securely through Firebase Auth -- we never store your password in plain text), native language, professional role, and target accent preference.

Audio Recordings

When you use our accent training features, we process your audio recordings through our AI scoring pipeline. Audio is sent to OpenAI Whisper API for transcription and analysis. Audio recordings are processed in real time and are not stored permanently. Anonymized, non-identifiable data derived from recordings may be retained to improve our scoring models.

Usage Data

We collect data about how you use the Service, including practice history, accent scores, drill completion rates, streaks, XP (experience points), achievements, leaderboard rankings, and progress metrics.

Device Information

We collect device identifiers for the purpose of demo rate limiting (to prevent abuse of our free Instant Accent Demo feature). This may include a device ID or fingerprint.

Persistent Installation Identifier

When you install the app, we generate a randomized identifier and store it securely on your device. We use this identifier to detect when you switch between devices during practice. We do NOT use device hardware identifiers (IDFA, IDFV, Android Advertising ID).

Accent Classification

When you complete a drill, our scoring system classifies your audio against multiple regional English accent profiles, including American and British. We collect both classifications regardless of which accent you've selected as your target, to improve our models. You can choose to display only your American score, only your British score, or both, in Settings → Accent Target.

Payment Information

When you subscribe to a paid plan, payment is processed by Dodo Payments, our third-party payment processor. We do not store your credit card number, bank account details, or other sensitive payment information on our servers. We receive only transaction confirmations and subscription status from Dodo Payments.

Cookies and Analytics

Our website uses cookies and similar tracking technologies to analyze traffic, remember your preferences, and improve your experience. You can manage cookie preferences through your browser settings. We use analytics tools to understand how visitors interact with our website.

2. How We Use Your Data

We use the information we collect for the following purposes:

  • Provide and maintain the Service: Authenticate your account, deliver accent training drills, generate accent scores, and track your progress.
  • Personalize your experience: Tailor training content based on your native language, target accent, skill level, and practice history.
  • Process audio for AI scoring: Send your audio recordings to our AI pipeline (including OpenAI Whisper API) to generate transcriptions, accent scores, and pronunciation feedback.
  • Send notifications: Deliver push notifications (via Expo Push Notifications), email reminders, streak alerts, and product updates. You can opt out of non-essential notifications at any time.
  • Analytics and product improvement: Analyze usage patterns to improve our training algorithms, scoring accuracy, and overall user experience.
  • Process payments: Manage your subscription billing through Dodo Payments.
  • Ensure security: Detect and prevent fraud, abuse, and unauthorized access.

3. How We Share Your Data

We share your information only with the following third-party service providers, and only to the extent necessary to operate the Service:

  • OpenAI: Audio recordings are sent to OpenAI Whisper API for transcription and accent analysis. This processing is governed by OpenAI's data usage policy.
  • Firebase / Google Cloud: We use Firebase Auth for authentication and Firebase Firestore for secure data storage. Your account data and usage data are stored on Google Cloud infrastructure.
  • Dodo Payments: Subscription billing and payment processing are handled by Dodo Payments. We share only the information necessary to process your transactions.
  • Analytics providers: We may use third-party analytics services to understand website and app usage patterns.

We do NOT sell your personal data to third parties.

We may also disclose your information if required by law, legal process, or governmental request, or to protect the rights, property, or safety of DuoAccent, our users, or others.

4. Data Retention

We retain your account data and usage data for as long as your account is active or as needed to provide the Service. Audio recordings are processed in real time and are not stored permanently.

If you delete your account, we will delete your personal data within 30 days, except where retention is required by law or for legitimate business purposes (such as fraud prevention or resolving disputes). Anonymized, aggregated data that cannot be used to identify you may be retained indefinitely.

5. Your Rights

Depending on your jurisdiction, you may have the following rights regarding your personal data:

  • Access: Request a copy of the personal data we hold about you.
  • Correction: Request that we correct any inaccurate or incomplete personal data.
  • Deletion: Request that we delete your personal data, subject to certain legal exceptions.
  • Data export: Request a portable copy of your data in a commonly used, machine-readable format.
  • Opt out: Opt out of non-essential communications and push notifications at any time.

To exercise any of these rights, contact us at privacy@duoaccent.com. We will respond to your request within 30 days.

6. Children's Privacy

DuoAccent is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If we become aware that we have collected personal data from a child under 13 without parental consent, we will take steps to delete that information promptly. If you believe a child under 13 has provided us with personal data, please contact us at privacy@duoaccent.com.

7. Security Measures

We take the security of your data seriously and implement appropriate technical and organizational measures to protect your personal information, including:

  • Encryption of data in transit (TLS/SSL) and at rest
  • Secure authentication via Firebase Auth with password hashing
  • Access controls and least-privilege principles for internal systems
  • Regular security reviews and monitoring

While we strive to protect your personal data, no method of transmission or storage is 100% secure. We cannot guarantee absolute security.

8. Changes to This Policy

We may update this Privacy Policy from time to time. When we make material changes, we will update the "Last updated" date at the top of this page and notify you via email or in-app notification where appropriate.

We encourage you to review this policy periodically to stay informed about how we protect your data. Your continued use of the Service after any changes constitutes your acceptance of the updated policy.

9. Contact

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us at:

DuoAccent Privacy Team

Email: privacy@duoaccent.com

Website: duoaccent.com