Kublet Inc ("we," "us," or "our") operates the Kango mobile application (the "App").
This Privacy Policy explains how we collect, use, disclose, and safeguard your information
when you use our App.
By using Kango, you agree to the collection and use of information in accordance
with this policy. If you do not agree with our policies and practices, please do
not use the App.
1. Information We Collect
1.1 Account Information
When you create an account using Google OAuth or Apple Sign In, we collect:
- Email address
- Full name
- Profile picture (if provided by the authentication provider)
- Unique authentication identifier
1.2 Profile and Learning Data
To personalize your learning experience, we collect:
- Native language
- English proficiency level
- Learning preferences and goals
- Vocabulary items you save and review
- Conversation history and roleplay sessions
- Speaking practice recordings (audio data)
- Progress metrics (speaking time, streaks, completed sessions)
1.3 Usage Data
We automatically collect information about how you interact with the App:
- Device type and model
- Operating system and version
- App version
- Session duration and frequency
- Feature usage patterns
- Error logs and crash reports
1.4 Subscription Data
If you purchase a subscription through Apple In-App Purchase:
- Subscription plan type (weekly, quarterly, yearly)
- Purchase date and renewal status
- Transaction receipt (processed by Apple, not stored by us)
- Subscription status (active, canceled, expired)
2. How We Use Your Information
We use your information for the following purposes:
- Provide AI Tutoring Services: Process your speech and text to generate
personalized AI responses and learning content
- Track Learning Progress: Monitor your speaking time, vocabulary
retention, and skill improvement
- Manage Subscriptions: Verify subscription status and manage access
to premium features
- Improve the App: Analyze usage patterns to enhance features and
user experience
- Send Notifications: Deliver important updates, learning reminders,
and account information
- Provide Customer Support: Respond to your inquiries and
troubleshoot issues
- Ensure Security: Detect and prevent fraud, abuse, and technical issues
3. Third-Party Services
We use the following third-party services to operate Kango. Each service has its own
privacy policy governing how they handle your data:
3.1 AI and Language Processing
- OpenAI: Processes your text and generates AI tutor responses
(Privacy Policy)
- Google Gemini: Alternative AI language model for conversation generation
(Privacy Policy)
- ElevenLabs: Converts text to speech for AI tutor voice
(Privacy Policy)
3.2 Authentication
- Google OAuth: Authenticates users who sign in with Google
(Privacy Policy)
- Apple Sign In: Authenticates users who sign in with Apple
(Privacy Policy)
3.3 Infrastructure and Storage
- Cloudflare R2: Stores audio recordings and user-uploaded content
(Privacy Policy)
- PostgreSQL Database: Stores account information, learning data,
and app content
3.4 Communication
- Resend: Sends transactional emails (account notifications, support)
(Privacy Policy)
3.5 Analytics
4. Data Sharing and Disclosure
We do not sell your personal information. We may share your information only in the
following circumstances:
- With Third-Party Services: As described in Section 3, to operate
the App
- For Legal Compliance: When required by law, court order, or
government request
- To Protect Rights: To enforce our Terms of Service or protect
our legal rights
- Business Transfers: In connection with a merger, acquisition, or
sale of assets (you will be notified)
- With Your Consent: When you explicitly authorize us to share
specific information
5. Your Rights and Choices
5.1 Access and Correction
You can access and update your profile information through the App's settings.
5.2 Data Deletion
You have the right to request deletion of your account and associated data. To delete
your account:
Upon deletion, we will remove or anonymize your personal information within 90 days,
except where retention is required by law.
5.3 Data Portability
You may request a copy of your data in a machine-readable format by emailing
[email protected].
5.4 Marketing Communications
You can opt out of promotional emails by following the unsubscribe link in any
marketing email or by adjusting your notification settings in the App.
5.5 GDPR Rights (European Users)
If you are located in the European Economic Area, you have additional rights under GDPR:
- Right to access your personal data
- Right to rectification of inaccurate data
- Right to erasure ("right to be forgotten")
- Right to restrict processing
- Right to data portability
- Right to object to processing
- Right to withdraw consent
5.6 CCPA Rights (California Users)
California residents have the right to:
- Know what personal information is collected
- Know whether personal information is sold or disclosed
- Say no to the sale of personal information (we do not sell your data)
- Access your personal information
- Request deletion of personal information
- Equal service and price (no discrimination for exercising rights)
6. Children's Privacy (COPPA Compliance)
Kango is intended for users aged 13 and older. We do not knowingly collect personal
information from children under 13 without parental consent.
If you are under 18, you must have permission from a parent or legal guardian to use
the App. If we discover that we have collected information from a child under 13 without
proper consent, we will delete it immediately.
Parents can request to review, delete, or stop further collection of their child's
information by contacting [email protected].
7. Data Retention
We retain your information for as long as necessary to provide the App and fulfill
the purposes described in this Privacy Policy:
- Active Accounts: Data is retained while your account is active
- Deleted Accounts: Personal information is removed or anonymized
within 90 days of account deletion
- Legal Requirements: Some data may be retained longer if required
by law or to resolve disputes
- Aggregated Data: Anonymized usage statistics may be retained
indefinitely for analytics
8. Data Security
We implement appropriate technical and organizational measures to protect your information:
- Encryption of data in transit (HTTPS/TLS) and at rest
- OAuth 2.0 and JWT-based authentication
- Access controls limiting employee access to personal data
- Regular security audits and vulnerability testing
- Secure cloud infrastructure with reputable providers
However, no method of transmission or storage is 100% secure. While we strive to
protect your information, we cannot guarantee absolute security.
9. International Data Transfers
Your information may be transferred to and processed in countries other than your
country of residence. These countries may have different data protection laws.
When we transfer data internationally, we ensure appropriate safeguards are in place,
such as standard contractual clauses approved by regulatory authorities.
10. Changes to This Privacy Policy
We may update this Privacy Policy from time to time. When we make changes, we will:
- Update the "Last Updated" date at the top of this policy
- Notify you via email or in-app notification for material changes
- Post the updated policy on this page
Your continued use of the App after changes are posted constitutes acceptance of
the updated policy.
11. Contact Us