Privacy Policy
Last updated: 03/11/2026
Sổ học (the app and the sotaygiasu.com website) respects the privacy of tutors, parents and students. This policy explains what we collect, why, where it is stored and the choices you have.
1
What data we collect
- Account: email and display name; phone number only if you enter it yourself.
- Google sign-in (if you choose it): your email, name and profile picture from Google. We do not access your contacts or mailbox.
- Data entered by tutors: students' names and notes, guardians' names and contact info, classes, schedules, sessions, attendance (with notes), monthly tuition amounts and paid status.
- Parent linking: an 8-character invite code created by the tutor.
- Technical: IP address and device/browser information (user agent) of login sessions, for security. Login codes (OTP) are stored only as a hash.
2
How we use your data
We use data only to:
- provide attendance and tuition tracking for tutors;
- let invited parents view their children's attendance and tuition;
- send login codes by email;
- keep your account secure.
No advertising, no profiling, and your data is never sold.
3
Where your data is stored
- Our servers are located in Vietnam.
- Connections are encrypted with HTTPS.
- Access is limited by role: a parent only sees their own children; a tutor only sees their own workspace.
4
Sharing with third parties
We do not sell, rent or trade personal data.
We rely on a few service providers only when needed:
- Google, for sign-in (if you choose to sign in with Google).
- An email delivery service, to send you login codes.
We disclose data only when required by law.
5
Retention and deletion
Data is kept while your account is active. When you delete your account:
- Parent account: deleted immediately. Only the link to the child is removed; attendance and tuition records belong to the tutor and remain.
- Tutor account: the whole workspace (students, guardians, schedules, attendance, tuition) is deleted after 30 days. You can cancel within 30 days by signing in again; parents are notified.
- Old backups expire after 14 days.
You can delete your account in the app: Settings → Delete account.
Request account deletion on the web6
Your rights
- View and edit your information in the app.
- Request a copy of your data by email.
- Delete your account at any time.
- A parent can ask the tutor to correct a child's information.
7
Contact
For any privacy question or data-related request, email us at:
hotro@sotaygiasu.com