Effective from 03/11/2026
This app is intended for ADULTS who wish to learn Catholic teaching on marriage and the family.
The “học Giáo Lý every day” app (web, iOS app, Android app) is developed by Fr. André Tuấn, A.A., for adults who wish to learn Catholic teaching on marriage and the family. For any question about personal data: arttuan.aa@gmail.com.
• Account: name, username, password (stored only as a one-way hash), roles, language and display settings.
• Profile picture, if you upload one.
• Learning data: lesson progress, practice and game runs, exam answers and results, digital certificates, attendance, submitted work, game items and gifts.
• Content you create: private messages, class board posts, reports you send.
• Technical data for safety: IP address, device type, sign-in log; a push-notification device token if you turn notifications on.
• Students’ personal records (date of birth, contact details, family, address) are entered and managed by the parish only on the website. The iOS and Android apps neither display nor collect this information.
Only to run the learning service: catechism classes, lessons, exams, certificates, review games, community messaging and notifications. We do not sell data, show ads, or track you across other apps or websites. Only a sign-in cookie is used — no advertising or analytics cookies.
• The catechists of your class and the system administrator (to teach, grade and keep everyone safe).
• Classmates see your name, profile picture, class board posts and the honour board (if you qualify).
• Private messages can be read only by the two people in the conversation; the administrator may view them to handle a report, and every such view is recorded in the system log.
• The hosting provider of the server running the system.
• Apple (APNs) and Google (Firebase Cloud Messaging), only to deliver push notifications.
• The Vietnamese read-aloud service (Vbee) receives the lesson text to be read, without your identity.
No other sharing, unless required by law.
• Data is kept until you delete your account.
• You can delete your account at any time: Profile → “Delete account”. All your data is then deleted (including exam results, attendance, posts and messages); only a marker that an account was deleted remains.
• A temporary app account (“Start learning now — no sign-up”) is deleted permanently after 30 days of no use, or when you delete it.
• Technical backups made by the administrator may hold older data until they are replaced or deleted.
Connections are always encrypted (HTTPS); passwords are stored only as one-way hashes; access is checked by role; failed sign-ins are rate-limited and important actions are logged.
You may see, correct and delete your data. Most of this can be done directly in your Profile; for anything else, write to arttuan.aa@gmail.com.
If this policy changes, this page will be updated with the new effective date.
Developed by Fr. André Tuấn, A.A. · fb: kuriosotheos · arttuan.aa@gmail.com