Privacy Policy
Introduction
At Langik, we take your privacy seriously. This Privacy Policy explains how we collect, use, and protect your personal information when you use our service.
Information We Collect
- •Account information (email, password)
- •Reading progress and preferences
- •Uploaded EPUB and PDF files
- •Chat messages and conversation history
- •Usage statistics and analytics (only with your explicit consent)
How We Use Your Information
We use your information to:
- •Provide and improve our services
- •Sync your reading progress across devices
- •Generate AI-powered translations and explanations
- •Store chat messages to formulate context for AI responses
- •Send important service updates
Data Security
We implement industry-standard security measures to protect your data. Your uploaded books and personal information are encrypted and stored securely.
Third-Party Services
We use OpenAI's API for translations and language processing. Your text data is processed according to OpenAI's privacy standards.
For authentication, we utilize Auth0, which provides secure login functionality. Auth0 may collect information such as your IP address, browser type, and login times. For more information, please see Auth0's privacy policy.
We also use Microsoft Azure services for cloud infrastructure and storage. Your data stored on Azure is subject to Microsoft's data handling practices and security protocols, in compliance with relevant regulations.
We use PostHog for product analytics to understand how users interact with our service. With your explicit consent, PostHog collects anonymized usage data such as page views, feature usage, and session duration. PostHog may also record session replays (visual recordings of your interactions with the app) if you separately consent to this. You can manage your preferences at any time through our cookie settings.
We use Microsoft Application Insights for application performance monitoring and error diagnostics to maintain service reliability.
Our landing page uses Vercel Analytics to measure anonymous web performance metrics.
Cookies & Tracking
We use cookies and similar technologies on our website and application. Essential cookies (such as those required for authentication and storing your language preferences) are necessary for the service to function and do not require consent.
Non-essential cookies used for analytics and session recording are only activated after you give explicit consent through our cookie banner. You can manage your cookie preferences at any time through the Settings page in the reader application.
The following cookies may be set: authentication cookies (essential, managed by Auth0), a consent preferences cookie (langik_prefs, stored for 1 year), and analytics cookies (set by PostHog, only with your consent).
To withdraw your consent, visit the Cookie Preferences section in your account Settings. You may also clear your browser cookies at any time.
Your Rights
You have the right to:
- •Access your personal data
- •Request data deletion
- •Export your data
- •Opt-out of non-essential communications
- •Manage your cookie and tracking preferences
Contact Us
If you have any questions about our privacy practices, please contact us through our Contact.