Privacy Policy

When you use Linecso, we may collect the following types of information to provide and improve our services:

• Email address (used for account creation and authentication)
• User ID (unique identifier assigned to your account)
• Username and display name (visible to other users)
• Translations generated through our AI-powered translation feature
• Online status and last seen timestamps
• Device notification tokens (for push notifications)
• Basic usage statistics and app interaction data

The information we collect is used to deliver, maintain, and enhance your experience with Linecso:

• Provide and operate our real-time messaging service
• Power AI-driven translation features across languages
• Send push notifications for new messages and updates
• Synchronize your chats across devices seamlessly
• Monitor and improve app performance and reliability
• Enable and manage premium subscription features
• Ensure security and prevent abuse of the platform

Linecso relies on trusted third-party services to function. These services may have access to certain data as required for their operation:

• Firebase Authentication — Secure user sign-in and identity management
• Firebase Cloud Firestore — Real-time database for messages and user data
• Firebase Cloud Messaging — Push notification delivery
• Firebase Cloud Functions — Server-side logic and automation

All user data is stored securely using Google Firebase infrastructure, which provides enterprise-grade security, encryption in transit and at rest, and reliable global cloud storage.

We retain your data only for as long as necessary to provide our services or as required by applicable laws. If you delete your account, we will remove your personal data from our active systems within a reasonable timeframe.

We believe you should have control over your personal data. Here's what you can do:

• Log out — You can sign out of your account at any time
• Delete your account — Contact our support team to request complete account deletion
• Manage visibility — You can disable your online status and last seen
• Request data — You may request a copy of your stored personal data
• Withdraw consent — Stop using the service at any time to withdraw consent

We take the security of your data seriously and employ industry-standard measures to protect it. Our infrastructure is built on Google Cloud Platform, which provides robust security features including encryption, secure access controls, and regular security audits.

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors. When we make significant changes, we will notify users through the app or other appropriate channels.

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