Privacy Policy — Treasure Hunt
Last updated: 1 September 2026
Treasure Hunt is an offline Bluetooth game, published by Essential AI Solutions LTD. It has no
servers and no accounts. The game itself does not use the internet at all. One part of the app does
— the advertisement between rounds — and this policy describes exactly what that involves, because
a policy that said "we collect nothing" would now be hiding it.
The short version
We do not collect anything. We have no server, so there is nowhere for your data to go to us.
Google does collect something, in one place and for one purpose: showing you an advertisement.
Because this is a game made for families, those advertisements are configured as **child-directed
and non-personalised** — no interest-based targeting, no remarketing, and no advertising profile
built from your play.
If you buy the ad-free upgrade, Google's advertising system is never started at all. Not
suppressed after loading — never initialised, and no advertising request is ever made from your
phone.
Everything the game itself knows — your profile, your settings, your scores, your calibration —
stays on your device and is never sent anywhere by us.
What the app stores, and where
All of this is on your own device and none of it is visible to us:
| What | Why it exists |
|---|---|
| Your profile — the display name, colour and avatar you choose | So other players in the same game see who you are |
| Your last-used game settings | So you do not re-enter them every round |
| Signal calibration | Numbers describing how one specific pair of phones sees each other, so the "hot / cold" detector is accurate in your home |
| A count of rounds you have finished | So the first advertisement does not appear before you have played a few games |
| Whether you bought the ad-free upgrade | So the upgrade keeps working when your phone is offline |
There is no account and no identifier tied to you. The app generates a random id for your install,
which exists only so phones in the same room can tell each other apart during a game.
What leaves your device
Four things, and only these.
1. To other players' phones, over Bluetooth, in the same room. When you join a game, your
display name, your colour and your avatar choice are sent directly to the other phones playing,
so they can show you in the lobby. This travels device-to-device over Bluetooth only. It does not
pass through any server, is not stored by anyone, and reaches only phones within Bluetooth range
that are in your game.
Your name is never broadcast openly. Phones looking for nearby games see only a random
four-character room code and a player count — never a name. This matters because the name field is
one that families type a child's name into.
The app never transmits your location. BLUETOOTH_SCAN is declared with Android's
neverForLocation flag, which is what makes that statement literally true rather than a promise.
On Android 8 to 11, Android itself requires the Location *permission* before it will return any
Bluetooth scan results at all; the app requests it for that reason alone and never reads your
position.
2. To Google, when an advertisement is requested. This is the one part of the app that uses the
internet. It happens between rounds, not during them, and only if you have not bought the ad-free
upgrade.
Requesting an advertisement sends Google your device's IP address, information about your device
and this app — such as the model, Android version, app version, language and screen size — and
diagnostic information about whether the advertisement loaded and was shown. Your IP address tells
Google roughly where you are, usually to about the level of a town or city. This is inherent to
making any internet request and is not something the app chooses to send.
What is not sent: your name, your avatar, your scores, your calibration, anything about who you
played with, and your device's advertising identifier — the app does not request the Android
advertising ID permission that Google's advertising system would otherwise use to build a profile.
Google's own privacy policy covers what it does with this: https://policies.google.com/privacy
3. To Google Play, if you buy the ad-free upgrade. The purchase is handled entirely by Google
Play. We never see your name, your card, or your address; we are told only that an anonymous
purchase of this product succeeded. Google Play's own terms and privacy policy govern the payment.
4. To your own Google account, if you have Android Backup switched on. Android may include your
profile and game settings in the automatic backup of your device to your own Google Drive. This is
a standard Android feature, controlled by you in your device settings, and the data goes to your
account — never to us. Signal calibration, your install's random id, your round count and your
purchase state are all deliberately excluded from backup.
Advertising, and how to switch it off
A short advertisement appears between some rounds. It can always be closed after five seconds, it
never appears during a round, and it never appears before you have finished several games.
The advertisements come from Google AdMob, which is a Google-certified advertising provider for
apps aimed at children. The app configures every request as:
- child-directed, which tells Google the whole app is for children and disables personalised
advertising and remarketing;
- non-personalised, requested explicitly and separately, so no interest profile is used to
choose what you see;
- rated G, so nothing above a general audience rating can be shown.
In the European Economic Area and the United Kingdom you will be asked, before any advertisement is
requested, whether you agree to what advertising needs. If you decline, no advertisement is ever
requested. That choice is handled by Google's User Messaging Platform and you can change it later.
The permanent way to switch advertising off is the ad-free upgrade, a single purchase in
Settings. Once you own it, the advertising system is not merely silenced — it is never started, so
your phone makes no advertising request at all.
Children
The game is designed to be played by families, including young children.
We collect nothing from anyone, of any age, and there is no way for a child to give anything away
to us: no chat, no user-generated content beyond the display name you choose, and no way to contact
anyone outside Bluetooth range — roughly the size of a house. The only data that leaves the device
is what an advertising request needs, described above, and buying the upgrade stops even that.
It does contain advertising, and one in-app purchase that removes it. The advertising is configured
child-directed and non-personalised as described above, which is what Google Play's Families policy
requires. The purchase goes through Google Play, where a device set up for a child requires a
parent's approval before any payment completes.
Third parties
Three, all of them Google, and all of them named above:
| Who | What for | When it runs |
|---|---|---|
| Google Mobile Ads (AdMob) | Fetching and showing the advertisement between rounds | Only if you have not bought the ad-free upgrade |
| Google User Messaging Platform | Asking for advertising consent where the law requires it | Only in the EEA and the UK |
| Google Play Billing | Selling and restoring the ad-free upgrade | Only when you open Settings or make a purchase |
There is no analytics library, no crash reporter, and no social or authentication SDK.
Retention and deletion
Everything the app stores is on your device, so you control all of it:
- Clear it: Android Settings → Apps → Treasure Hunt → Storage → Clear data.
- Remove it entirely: uninstall the app. Nothing survives on your device.
- Backup copies: if Android Backup is on, remove the backup through your Google account's
backup settings.
- Your purchase: held by Google Play against your Google account, not by us. It survives
uninstalling and reappears when you reinstall and sign in.
We hold no copy of any of it, so there is nothing for us to retain and nothing for us to delete on
your behalf. Data held by Google in connection with advertising is covered by Google's own policy,
linked above.
Security
The game's own data never leaves your device, so it cannot be intercepted in transit to a server —
there is no server and no such transit. The device-to-device Bluetooth exchange described above is
limited to phones in the same game within radio range, and carries only what is listed there.
Advertising requests and purchases travel over Google's own encrypted connections.
Changes
If this policy changes, the date at the top changes with it.
Contact
Questions about this policy, or about anything the app does with your data, go to:
support@essentialai.uk
Published by Essential AI Solutions LTD — https://essentialai.uk