Gia sư 24h is operated by To be updated (To be updated).
Tax code: To be updated. Business registration number: To be updated.
Address: To be updated. Representative: To be updated.
Contact: To be updated · Hotline To be updated · Zalo OA To be updated.
Account: phone number, full name, password (stored hashed), role (parent / tutor), profile photo, sign-in times and devices.
Classes you post: subject, grade, area, exact address (shown only to the tutor you choose), schedule, fee, notes about the learner. Applications, teaching invitations, connections between parents and tutors.
Tutor profiles: introduction, subjects, areas, fees, profile photos, CV, starting point (rounded to about 100 m, to work out travel distance). Documents sent for verification: photos of the student card, both sides of the citizen ID card (CCCD), degrees / certificates, and the text read from them.
Messages between parents and tutors, attached files / photos, reports, the people you block, reviews.
Data about children (entered by the parent): nickname, year of birth, gender, school, grade, subjects to improve, goals, test scores / school record, the lesson log (comments, homework, photos of work), monthly progress reports, how much is shared with the tutor.
Tuition: lessons, fee statements, whether they were paid; the bank account number, bank name and account holder a tutor enters to receive tuition. Online classes: Zoom / Meet / Teams room links and recording links (only with the parent's consent).
Location: only when you tap "Vị trí của tôi" (My location) to find nearby classes / tutors; used once for that search, rounded, not stored (except the starting point a tutor saves).
Notifications: the device token for push notifications (Google Firebase Cloud Messaging), device model, app version.
IP addresses are hashed (never stored as is) to prevent abuse such as sending codes repeatedly or harvesting phone numbers.
Usage statistics: pages / screens you open, time spent, buttons you tap, where you came from, device and browser type, province / city estimated from the network. When you are not signed in we use a random ID stored on your device instead of an account. No advertising ID, no tracking across other apps or websites.
Voice: when you tap the microphone to speak instead of typing, speech is turned into text by your phone's operating system (Apple / Google); we only receive the text.
Signing in; showing suitable classes and tutors; connecting and messaging; verifying tutors ("Đã xác minh" / Verified badge); managing lessons, the lesson log and tuition; sending the notifications you turned on; fighting spam, scams and offending content; understanding how people use Gia sư 24h to make it better.
We do not sell data, do not use it for third-party advertising and do not send usage statistics outside.
An AI service run by Gia sư 24h itself (not sent to outside AI companies) reads: Facebook group posts to sort them; the text on student cards / degrees to prefill verification (citizen ID photos are not sent to the AI); lesson comments and the child's nickname to draft the monthly progress report; the CV, messages and posts you ask it to help write.
AI output is always a draft for you to review, edit or discard. Administrators can switch AI off for each feature.
Other users: public tutor profiles (no phone number); a phone number is shown to the other side only once the two connect / apply; children's data is shown only to the tutor currently teaching, at the level the parent chooses; verification documents are seen only by verification staff.
Service providers: the SMS provider (phone number, code / message text), Google Firebase (device token, notification text; may be processed outside Vietnam). Servers and databases are managed by Gia sư 24h itself.
Government authorities when required by law.
Posts in the feed are collected from public Facebook groups: the post text, the poster's name and Facebook page, the phone number written in the post. Kept for at most 30 days.
Someone who posted in a group may receive one message (Zalo / Messenger) from Gia sư 24h suggesting classes or tutors that fit their post, stating the source and how to opt out. Tapping the opt-out link or replying "KHÔNG" (NO) means they are never messaged again; requests to delete all their data go to the contact in section 8.
Group posts: 30 days. Citizen ID photos: deleted 30 days after review (only the last 4 digits and the result are kept). Usage statistics: 180 days. Everything else: while the account is active.
Account deletion: data is deleted or anonymised after 7 days; some records (for example consent records and reports) are kept anonymised where the law requires it or to prevent abuse.
Accounts are for people aged 18 and over. Data about children is entered and managed by their parents; parents decide how much the tutor sees, and can edit or delete it at any time. There is no need to enter a child's full name or face photo.
Student mode runs on the parent's phone, locked with a PIN: the child only sees their own schedule, homework and school record, and can message the tutor currently teaching them.
View and edit your information under "Tôi" (Me), download my data (a JSON file), turn off each kind of notification, withdraw consent, request account deletion (Account deletion page).
Personal data contact: To be updated. We reply within 72 hours.