App Name: Den
Company / Data Controller: MD Teknoloji Bilişim ve Ticaret Anonim Şirketi
Email: dev.demirci@gmail.com
Website: https://www.denapp.xyz
This Privacy Policy explains how Den ("the App," "we," "us," or "our") collects, uses, shares, and protects personal data when you use our mobile application.
Den is designed to help users learn English and German through stories, songs, listening exercises, flashcards, progress tracking, and AI-powered language analysis.
By using the App, you agree to the practices described in this Privacy Policy.
1. Information We Collect
We may collect the following types of information:
a. Account and identity information
- Name
- Username
- Email address
- Login credentials
- Profile information
b. Learning and usage data
- Selected learning language(s) (English / German)
- Completed lessons, stories, and exercises
- Vocabulary learning status
- Learning progress and performance statistics
- Streak and study activity data
- In-app interactions and usage history
c. Technical information
- Device model
- Operating system version
- App version
- Crash logs and error reports
- Performance and diagnostic data
- IP address or similar network information
d. Payment and subscription information
If the App offers paid features or subscriptions, payments may be processed through Apple App Store or third-party payment providers.
We do not directly store full payment card details. However, we may process limited transaction-related data such as subscription status, purchase verification, and billing-related records as necessary to provide the service.
e. Content processed through AI features
When you use AI-powered features such as analysis, translation, or explanations, the words, phrases, sentences, or other language content you submit may be processed in order to provide those features.
2. How We Use Your Information
We may use your information to:
- Provide and operate the App
- Create and manage user accounts
- Personalize the English and German learning experience
- Show progress tracking, learning history, and performance insights
- Deliver stories, exercises, flashcards, and other learning content
- Provide AI-powered explanations, analysis, and recommendations
- Verify subscriptions and purchases
- Detect errors, prevent abuse, and improve security
- Respond to support requests
- Improve app performance, analytics, and user experience
- Comply with legal obligations
3. How We Share Information
We may share your information only when necessary and only with:
- Hosting and infrastructure providers
- Analytics and crash reporting providers
- Payment and subscription service providers
- AI service providers, to the extent required to deliver relevant features
- Public authorities or legal bodies, when required by law
We do not sell your personal data.
4. Third-Party Services We Use
The App may use third-party services to support analytics, subscriptions, AI features, crash reporting, hosting, and infrastructure. These service providers may process personal data in accordance with their own privacy policies.
Services we use may include:
- Firebase
- RevenueCat
- OpenAI
- Sentry
- DigitalOcean
- Mixpanel
- YouTube / Google LLC
The App uses YouTube's iframe embed feature to display video content. When you interact with embedded YouTube videos, Google LLC may collect data (such as your IP address, device information, and interaction data) in accordance with Google's Privacy Policy. Den does not control how Google collects or uses this data. By using features that include YouTube videos, you acknowledge and agree to Google's data practices.
5. International Data Transfers
Some of the service providers we use may process data on servers located outside your country. When this happens, we take reasonable steps to ensure that data is protected in accordance with applicable laws and appropriate safeguards.
6. Data Retention
We retain personal data:
- for as long as necessary to provide the App,
- for the period required by legal obligations,
- and for legitimate business purposes such as security, recordkeeping, dispute resolution, and fraud prevention.
When data is no longer needed, we delete, anonymize, or securely dispose of it where appropriate.
7. Data Security
We use reasonable technical and organizational measures to protect personal data against unauthorized access, loss, misuse, or disclosure. However, no internet transmission or electronic storage system can be guaranteed to be 100% secure.
8. Children's Privacy
The App is not intended for children under the age required by applicable law without appropriate parental or guardian involvement.
If we become aware that we have collected personal data from a child in violation of applicable law, we will take appropriate steps to delete that information.
9. Your Rights
Depending on your location and applicable law, you may have the right to:
- request access to your personal data,
- request correction of inaccurate or incomplete data,
- request deletion of your data,
- object to or restrict certain processing,
- request portability of your data,
- and exercise other legal rights available to you.
To submit a privacy-related request, contact us at:
dev.demirci@gmail.com
10. Account Deletion
You may request deletion of your account and associated personal data by contacting us at:
dev.demirci@gmail.com
We may retain certain information where necessary to comply with legal obligations, resolve disputes, enforce agreements, or maintain security and fraud prevention measures.
11. Changes to This Privacy Policy
We may update this Privacy Policy from time to time. When we do, we will revise the "Last Updated" date above. Material changes may be communicated through the App, our website, or other appropriate channels.
12. Contact Us
If you have any questions about this Privacy Policy, please contact us:
Company: MD Teknoloji Bilişim ve Ticaret Anonim Şirketi
Email: dev.demirci@gmail.com
Website: https://www.denapp.xyz