Privacy Policy
Effective Date: April 27, 2026 Last Updated: April 27, 2026
1. Introduction
This Privacy Policy describes how personal data is collected, used, and protected by Abdullah Gül ("Developer", "we", "us") through the Katly mobile application and website (katly.net) ("Service").
By using the Service, you acknowledge that you have read, understood, and agreed to this Privacy Policy. This policy complies with the Turkish Personal Data Protection Law (KVKK) No. 6698 and the General Data Protection Regulation (GDPR).
2. Data Controller
Abdullah Gül (Individual Developer) - Location: Antalya, Turkey - Email: infokatly@gmail.com - Web: https://katly.net
3. Data We Collect
3.1 Account Information
- Username
- Email address
- Password (encrypted)
- First and last name (optional)
- Profile photo (optional)
3.2 Content Data
- PDF files you upload
- Catalog titles and descriptions
- Category information
- Your notes and calculations
3.3 Automatically Collected Data
- Device type and operating system
- App version
- Language preference
- IP address (temporarily, for security)
- Usage statistics (anonymous)
4. How We Use Your Data
Collected data is used for:
- Creating and managing your account
- Providing core service functionality
- Performing support operations such as password reset
- Improving the application and fixing bugs
- Fulfilling legal obligations
- Ensuring security and preventing abuse
5. Data Sharing
Your personal data is never sold to third parties. Data may only be shared in:
- Legal obligation: Court order or legal request
- Service providers: Hosting (DigitalOcean), storage (Cloudflare R2), email (Resend) - only for technical necessity
- With your explicit consent
6. Data Retention
- Active accounts: As long as your account is active
- Deleted accounts: All data is deleted within 30 days after account deletion
- Anonymous statistics: Indefinitely (contains no personal data)
7. Data Security
The following measures are taken to protect your data:
- SSL/TLS encryption (HTTPS)
- Passwords hashed with bcrypt
- JWT token-based secure session management
- Regular security updates
- Limited access control
- Data backups
8. Your Rights
You have the following rights regarding your personal data:
- Right to information: Learn whether your data is being processed
- Right of access: Learn what data is being held
- Right to rectification: Correct inaccurate data
- Right to erasure: Delete your data ("right to be forgotten")
- Right to object: Object to data processing
- Right to data portability: Transfer your data to another service
To exercise these rights: infokatly@gmail.com
9. Children's Privacy
Our Service is not intended for users under 18 years of age. We do not knowingly collect data from users under 18.
10. Cookies
Our website (katly.net) only uses essential cookies: - Session management - Language preference - Security
Third-party tracking cookies are not used.
11. Third-Party Services
Our Service uses the following third-party services:
| Service | Purpose |
|---|---|
| DigitalOcean | Server hosting |
| Cloudflare R2 | File storage |
| Resend | Email delivery |
| Expo | Mobile app infrastructure |
| Google Play | App distribution |
12. Policy Changes
This Privacy Policy may be updated from time to time. You will be notified of significant changes via in-app notification or email.
13. Contact
📧 Email: infokatly@gmail.com 🌐 Web: https://katly.net 📍 Location: Antalya, Turkey
This policy is prepared in accordance with the laws of the Republic of Turkey and complies with KVKK.