Privacy Policy
This Privacy Policy explains how the Glagol mobile and web application ("Glagol", "we", "us", or "our") collects, uses, and protects information when you use our Russian language learning service. By using Glagol, you agree to the practices described below.
1. Information We Collect
Account information
When you sign in with Google, we receive your email address, display name, and profile picture URL from Google. We do not see or store your Google password.
Learning progress
We store your in-app activity to power your learning experience:
- Vocabulary mastery state per word (strength, last review date)
- Lesson and unit completion progress per CEFR level (A1 through B2)
- Daily activity history (timestamps of practice sessions)
- Experience points (XP), streak count, and unlocked achievements
- Selected avatar, display name, and language preferences
Information we do not collect
Glagol does not request or collect:
- Location data
- Contacts, photos, calendar, or other on-device files
- Microphone or camera input
- Browsing history or analytics outside of Glagol
- Payment or financial data (Glagol is currently free)
2. How We Use Information
We use the information we collect solely to:
- Personalize your learning path (which words to review, when)
- Persist your progress across devices
- Display your profile (avatar, display name) in the app and on the leaderboard
- Power achievement and streak features
- Diagnose technical issues if you contact support
We do not sell, rent, or share your personal information with third parties for marketing purposes.
3. Third-Party Services
Firebase (Google LLC)
Glagol uses Firebase Authentication and Firebase Firestore to handle sign-in and store your learning progress. Firebase is operated by Google and is bound by Google's privacy policies. See Google's Privacy Policy.
Google Cloud Text-to-Speech
Russian audio in Glagol is pre-rendered offline using Google Cloud Text-to-Speech and shipped with the app as static MP3 files. Audio playback in the app does not send your voice or any input to Google.
Cloudflare
Our domain DNS and email forwarding are provided by Cloudflare. Cloudflare may collect standard server logs (IP address, request timestamp) when you access glagol.app. See Cloudflare's Privacy Policy.
4. Data Storage and Security
Account data is stored in Firebase Firestore servers (typically located in the European Union or United States, as managed by Google). Data is transmitted over HTTPS and encrypted at rest by Firebase.
We retain your data for as long as your account is active. You can delete your account and all associated data at any time from within the app (Settings → Reset all data) or by contacting us.
5. Your Rights
You have the right to:
- Access the data we hold about you
- Correct inaccurate information (display name, avatar)
- Delete your account and associated data
- Export your learning progress (contact us)
- Withdraw consent by stopping use of the app and deleting your account
If you reside in the European Union, you also have rights under the General Data Protection Regulation (GDPR). Contact us using the email below to exercise any of these rights.
6. Children's Privacy
Glagol is intended for users aged 13 and older. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has provided us with information, please contact us and we will delete it.
7. Changes to This Policy
We may update this Privacy Policy from time to time. Material changes will be reflected here with an updated "Last updated" date. Continued use of Glagol after a change constitutes acceptance of the revised policy.
8. Contact Us
If you have questions, requests, or complaints about this Privacy Policy or our data practices, please contact:
Email: info@glagol.app
Website: glagol.app