Privacy

Tsi’s Database Academy, by TaTech

Last updated 12 September 2026

The short version. Almost everything stays on your own device. We ask for a first name so the app can greet you and put it on a certificate. We do not show adverts, we do not use analytics or tracking pixels, and we never sell anything to anybody.

What is stored on your device

Your lessons, stars, streak, quiz answers and settings are saved in your browser’s own storage and are not sent anywhere. If you never ask for access and never join a class, nothing about your learning ever leaves the device.

What leaves your device, and why

What	When	Why
Your first name	When you type it	To greet you, and to print your certificate. It is also attached to automatic error reports so a broken lesson can be traced.
Name and email	Only if you tap “Request access”	So we can create an access code and send it to you. Nothing else is done with it.
Your progress	If you join a class, or switch on progress sync	So you can carry on from another device, and so your teacher can see how the class is getting on.
A random session id, and your browser type	Each visit	To show the administrator who is currently using the app, and to count active learners.
Error reports	If the app breaks	The error message, the page, and your first name, so the fault can be found and fixed.
Lesson text	When you use read-aloud or change language	Sent to a speech or translation service to be spoken or translated. Where the app greets you by name, that greeting may include your first name.

Who else sees it

We use a small number of services to make the app work. They receive only what is listed above.

Supabase — hosts our database and server code, where access codes, progress and error reports are stored.
GitHub Pages — serves the app itself. Like any web host, it sees your IP address.
Anthropic — translates lesson text into French, Pidgin or Spanish.
ElevenLabs and Google — turn lesson text into the spoken voice.
MyMemory — a fallback translator, used only if the first one is unavailable.
jsDelivr — delivers the in-browser PostgreSQL and Python used for practice. Like any CDN it sees your IP address.

There are no advertising networks, no analytics, and no third-party trackers of any kind.

Children

This app is built for learners of all ages, including children, and is often used in classrooms. We have kept that in mind:

A pupil never needs an email address. When a class joins, each pupil types only a first name and the class code. Their progress is linked to a code, not to a person’s contact details.
We do not ask for an address, a date of birth, a photograph or a phone number, and there is nowhere to upload one.
There is no chat, no messaging and no way for learners to contact each other.
A teacher can see their own class’s progress and nothing else. A teacher cannot change a pupil’s work.

If you are a parent or guardian and would like your child’s information removed, write to the address below and we will delete it.

How long it is kept

Progress is kept while the account is in use, so learners can come back to it. Error reports are kept only long enough to fix the fault. Anything can be deleted on request, and deletion is permanent.

Deleting everything

On your own device: open My Progress in the app and use Reset progress, or clear this site’s data in your browser settings. That removes everything stored locally.

From our server: email the address below with your access code or the name you used, and we will delete your progress and your code.

Security

Everything travels over HTTPS. The browser never talks to the database directly — all access goes through server-side functions. Teacher PINs and the administrator password are stored only as one-way hashes, never as text we could read.

Changes

If this policy changes in a way that matters, the date at the top changes with it.

Contact

TaTech — tsi.angwafor@ta-techsolutions.com
tatech.dev