GambitWise privacy policy

Last updated: 1 November 2026

This policy explains what happens to information in GambitWise: Learn Chess and Go ("the app") on a Meta Quest headset. The developer is dav3studios. The publisher is David Lee ("we", "us"). We wrote it for parents, carers and teachers. A short version for young people is at the end.

The short answer

This app does not collect or send any personal information. It has no accounts, no chat, no online play, no advertising, no analytics and no in-app purchases. Our own code makes no network requests. The app keeps its progress and settings on this headset only.

The app stores no personal data on any server. While it runs, it uses two items from your Meta account, on the headset only: the account's user ID and its age group. "Information from your Meta account" below says what they are, why the app gets them and what happens to them.

Internet

The app's Android settings ask for the internet permission. We keep it in case the Meta store checks need it (see "What Meta does"). Meta says that the ownership check does not need an internet connection. When the headset is online, Meta asks apps to make the age group check. Our own code never uses the network. Nothing from the app itself is sent anywhere.

What the app keeps on the headset

One save file holds every explorer on this headset, with a backup copy of the save before it. An explorer is a picture and a colour. The app never asks for a name.

For each explorer the save file keeps:

• the picture and its colour, and the reading depth
• the explorer's own settings:
• comfort, sound and text
• the board size, the letters and numbers on the board and the move marks
• whether to use the real table
• how much the coach talks, and whether the coach asks "What will I do next?" in games
• the chess clock chosen for games against the coach, and whether the game presses the clock for the child
• the logbook, with the steps done, the friend games and the games against the coach (the level and the result)
• the badges, and the chess and Go steps started and done (for each step done: the reading depth, the date and how many times)
• whether the coach has said who it is, and whether it has said its line about jumping ahead
• check answers, mission progress and the places visited
• times: when the explorer was added and last played, and when each logbook entry, step, badge and visit happened

Friend games

Two players can share the headset for one game. Each player picks a picture. A picture that no explorer has yet makes a new explorer on this headset. At the end, the result goes into the logbook of both explorers. Nothing is sent anywhere. Before every friend game, the app shows a card for grown-ups with hygiene advice: "If you feel unwell or have a cold, an eye infection like conjunctivitis, a skin infection or head lice, do not share the headset." It also asks players to wash their hands and to wipe the headset with a dry microfibre cloth only.

The grown-ups file

A second small file holds the grown-up settings for the whole headset: the time limit and how it counts, the break reminder and the journey switches. For the time limit it also keeps the time played, any extra time, the date and the last time the app was in use.

Your room

In mixed reality, the app can ask to use your room's spatial data to find a table. It uses this on the headset only and keeps no map of the room. It saves one thing: where you placed the board on a table, as a position in a small file and as a Meta spatial anchor on this headset. "Room placement" on the grown-ups page deletes both. Nothing is sent anywhere.

The app never asks for the headset cameras or the microphone. The headset shows the real room, not the app.

Photos

The tablet's Photo button saves a picture and a small copy of it. Photos show the app's own scenes only, never the real room. Each photo is listed in the logbook of the explorer who took it. The album keeps the newest 60 photos of all explorers. All of these files stay on the headset.

Deleting it

On the grown-ups page:

• "Reset progress" deletes the progress and the photos of the explorer who is playing.
• "Explorers" removes an explorer with their progress and photos.
• "Photos" deletes the photos of the explorer who is playing.
• "Room placement" deletes the board's place and its spatial anchor.

Each of the first three writes the save file again at once, so the backup copy keeps no old data. The grown-up settings stay until a grown-up changes them. Uninstalling the app deletes all its files on the headset. We have no copy anywhere else.

What Meta does

At start-up the store version asks the Meta system software whether this headset account owns the app. It also asks which age group the account is in. The app gets only these two answers. It uses them on the headset and does not store or send them. "Information from your Meta account" below says more about both checks.

If hand tracking is on, the app uses it on the headset to show your hands and to move the pieces. The app does not record it.

The headset, the Meta account, the room scan and purchases are covered by Meta's own privacy policy: https://www.meta.com/legal/privacy-policy/ and https://www.meta.com/legal/quest/privacy-policy/.

Information from your Meta account

The app asks Meta for two items about the Meta account that is signed in on the headset: the account's user ID and its age group. The app uses them only to run the app and to follow Meta's rules. Both stay on the headset. We never receive them.

The Meta Platform SDK handles both items. It is Meta's software library inside the app, and it works with the Meta system software on the headset. That system software may contact Meta to answer. Meta's own privacy policy covers that part.

Your user ID

• What it is: The user ID is Meta's identifier for the Meta account: a number that Meta gives to each account. It is not your name, your email address or your age.
• Why the app uses it: To run the app for the person who owns it. When the app starts, the Meta Platform SDK uses the account's user ID to check that the account owns the app. This is the entitlement check. It makes sure that only the owner of the app can use it. If the check fails, the app stops and shows a message with "Try again" and "Quit". The Meta Platform SDK also uses the account to ask for its age group.
• Where it is processed: On the headset only, inside the Meta Platform SDK, which uses it for the check. The app's own code does not copy it or keep it.
• How long it is kept: The app does not store it. Nothing of it is left after the app closes.
• Who receives it: We never receive it. The app never sends it to us or to anyone else. It is never used for advertising, analytics or profiling. It is never shared. To answer the check, the Meta system software on the headset may contact Meta. Meta's own privacy policy covers that part.
• How to delete it: There is nothing to delete, because the app keeps nothing of it. Uninstalling the app removes everything that the app keeps on the headset.

Your age group

• What it is: The age group is the group that Meta holds for the account, such as child, teen or adult. It is not your date of birth or your exact age.
• Why the app uses it: To follow Meta's rules and the law on children's data. The app is for mixed ages: for children from 10, and for teenagers and adults. Meta's rules for apps for mixed ages ask each app to check the age group of the account. These rules help apps follow the law on children's data. The app makes this check after the entitlement check, to follow these rules. The app is made to suit every age group that can use it. It has no chat, no online play, no advertising and no purchases for anyone.
• Where it is processed: On the headset only. The app keeps the answer in the headset's memory while it runs.
• How long it is kept: Only while the app runs. The app does not save it to a file. It is gone when the app closes.
• Who receives it: We never receive it. The app never sends it to us or to anyone else. It is never used for advertising, analytics or profiling. It is never shared. To answer the age group check, the Meta system software on the headset may contact Meta. Meta's own privacy policy covers that part.
• How to delete it: There is nothing to delete, because the app keeps nothing of it after it closes. Uninstalling the app removes everything that the app keeps on the headset.

Children

The app is made for ages 10 and over, their families and teachers. It collects no personal data, asks for no names, has no accounts and shows no advertising. Nobody can contact a child through the app. Meta says: "Children's use of Meta Quest should always be supervised by an adult to reduce likelihood of injury or property damage."

Questions

If you have a question about this policy, email us at lee_hantae@msn.com.

Changes to this policy

If we change this policy, we change the date at the top and publish the new version at https://dhl84.github.io/gambitwise/privacy.html. We will not add any data collection without first changing this policy, the app's store listing and Meta's Data Use Checkup.

For young people

• The app does not ask for your name. It does not know who you are or where you live.
• Your steps, games, badges and photos stay on the headset.
• When the app starts, it checks with Meta that your account owns the app, and which age group your account is in. This stays on the headset. The app forgets it when it closes.
• Nobody can talk to you in the app, and there are no adverts.
• If you have a question, ask a grown-up to email us.