Privacy policy

Who we are

ZuiHub Kid is made and published by an independent developer (an individual, not a company), the developer named on the app's pages on Google Play and the App Store. For any privacy question, write to hieupv.est@gmail.com or see the Support and contact page.

Data we collect

The app collects no information about you or your child. It has no account, no sign-in, no ads, no analytics or tracking tools, no in-app purchases, and no third-party library that collects data. The app sends no data about you or your child to our servers or to anyone else. The only internet connection is the TV downloading question sets, described in Downloading question sets over the internet.

How the app works on your home network

The TV app runs a small server on your home network so that phones can connect to it. The TV shows a square code (QR) that holds the TV's address on your home network. The phone app reads that code with the camera, or you type the digits shown under it, and then connects directly to that TV. The app does not search your network for devices.

Game messages are: buttons pressed, recognised moves (for example “step left” or “light hop”), how far the phone is tilted, the animal or character chosen, and in some games a name the child types for their character. These messages travel only between devices on the same local network and are not sent to us or to any third party.

Downloading question sets over the internet

When the TV is connected to the internet, ZuiHub Kid on the TV downloads newer versions of the question sets (the quizzes woven into the games) from our service at zuihubtv-admin.webpress.vn. These are ordinary download requests (HTTPS GET) for public files: the list of versions, the question file for each language, and the pictures and voice clips those questions use.

• The app sends nothing about your child or family: no name, no age, no results, no chosen topics, no device identifier, no advertising identifier. The requests carry no cookies, no parameters and no uploaded content. There is no tracking.
• What every web request carries: the IP address of your home network, the time, the name of the file requested and a generic app name (the same on every device). We have switched request logging off for this service, so we keep no record of these requests. The service runs on Cloudflare's infrastructure; as the host, Cloudflare may process this information in its own ordinary technical logs to run and protect its network. We do not use it to identify or follow anyone.
• Pictures and voice clips are served by the same service. If a question ever uses a file hosted on another server, that server also receives only a download request like the ones above.
• There is no switch yet to turn this download off in the app. Question updates need the internet; when the TV is offline, the app works normally with the questions built into it.
• The phone app does not download question sets; it only talks to the TV on the home network.

The downloaded files are kept on the TV for playing offline.

Phone and TV permissions

• Local network / Wi-Fi: to connect to the TV at home (the TV whose code you scanned; the app does not search the network for devices). On Android the app declares the “Internet” (network access) permission because Android requires it for every network connection, including connections inside the home. On the TV it is also used to download question sets; the app does not use it to send your data to the internet.
• Motion sensors (accelerometer, gyroscope): only to turn movements into game actions. Raw sensor data stays on the phone; the phone only sends the TV the recognised moves and summary values (for example the tilt or the amount of movement).
• Camera (phone only): only to read the square code on the TV when you tap “Scan the code on the TV”. The camera picture is processed on the phone to find the code; the app takes no photos, records no video, and stores or sends no pictures. Without camera access you can still connect by typing the digits shown on the TV.
• Vibration: to make the phone buzz gently on game events.

The app does not use the microphone, location, contacts or photo library.

Data stored only on your devices

A few small pieces of information are saved on the device itself so you can carry on next time. They never leave that device:

• On the TV: the animals your child has befriended, game progress, settings and chosen game rules. Wins and losses are never stored.
• On the phone: a random device identifier used to reconnect to the TV, the address of the last TV, the animal or character chosen, and a name the child types for a character (for example a nickname in Turn-Based Battle). The device identifier is a random string made by the app; it is not linked to a name, phone number or advertising ID.
• On the TV, downloaded question sets: the question files with their pictures and voice clips, kept for playing offline; and the language and learning topics you chose.

You can delete this information at any time by clearing the app's data in the device's Settings, or by uninstalling the app.

Keeping and deleting data

We keep no data about you or your child on any server, so there is nothing for us to keep and nothing for us to delete. Everything the app remembers is on your own devices and stays there until you remove it:

• Android TV, Google TV and Android phones: open Settings, Apps, ZuiHub Kid, Storage, and choose Clear data; or uninstall the app.
• iPhone: delete the app.

If you write to us by email, we receive your email address and what you wrote. We use them only to answer you, and we delete the conversation when you ask us to.

Children's privacy

The app is made for children about 2–10 years old, playing with a parent or another adult nearby. We do not collect personal information from children, and the app is built so that it cannot: it has no accounts, no forms that send data, no online chat, no ads, no purchases and no links that lead out of the app.

The only thing a child can type is a nickname for a character in some games. It is shown on your family's TV and saved on the phone; it is never sent to us.

We respect children's privacy rules such as COPPA (United States), the GDPR (Europe, including its rules for children) and Vietnam's personal data protection law. Parents and guardians can contact us at any time to ask about this policy or to ask what we hold about their child (the answer is: nothing). If you believe your child's information has somehow reached us, for example in an email, write to hieupv.est@gmail.com and we will delete it.

Third parties, selling and sharing data

We do not sell, rent or share your data, because we do not have it. The app contains no advertising, analytics or social-network library from any third party. It is built with the open-source Godot engine, which collects nothing.

The outside services involved are:

• Cloudflare hosts the question-set service and this website (see Downloading question sets over the internet and This website).
• Google Play and the App Store deliver the app. They process data under their own policies and may give us aggregated, anonymous statistics (such as the number of installs).
• Email: if you write to us, your message is handled by our email provider (Gmail, by Google).

Security

Because game data stays on your family's devices and game messages only travel on the local network, none of your personal data sits on our servers. Question sets are downloaded over an encrypted connection (HTTPS). Game messages on the local network are not encrypted; while the TV shows its lobby, another phone on the same Wi-Fi can join as a player. Please use the app on a password-protected home Wi-Fi.

Users in other countries

The app works the same everywhere. Game data does not leave your devices. When the TV downloads question sets, the request is answered by Cloudflare's infrastructure, which has servers in many countries; the request contains nothing about your child. Your rights under the law where you live (such as access or deletion) can be exercised directly on the device as described above, and you can always contact us.

This website

This website is made of static pages. It uses no cookies, no analytics or tracking, and loads no fonts or scripts from third parties. The page that the TV's code links to runs one small script from this website itself: it reads the TV's address from the part of the link after the # sign, which a browser never sends to a server. The hosting provider (Cloudflare) may keep ordinary technical logs, such as IP addresses, to run and protect the site.

Changes to this policy

When this policy changes, we will post the new version on this page and update the effective date at the top. If the change is significant, we will also mention it in the app's store description.

Contact

ZuiHub Kid, the developer: hieupv.est@gmail.com. Help and common questions are on the Support and contact page.