Privacy Policy
Privacy Policy
The short version
- You do not need an account. We never ask for your name, email address, phone number or location to play.
- The App creates a random device ID on first launch. Our server uses it to save your coins, items and level progress.
- The App contains no advertising, no analytics and no in-app purchases. We do not sell or share your information for advertising.
- You can ask us to delete your game data at any time by emailing support@z-rex.net.
1. About this policy
This Privacy Policy explains how information is handled when you use the mobile game Spot the Difference (the “App”) and its game server. In this policy, “we”, “us” and “our” refer to the developer of the App as listed on its Google Play store page.
The App is operated by .
The App is a casual puzzle game: you compare two nearly identical pictures, find the differences before the timer runs out, and each level you clear reveals a piece of a themed picture collection (an “atlas”).
2. Information we collect
2.1 Information we do not collect
The App has no sign-up or login. We do not ask for, and the App does not access, your name, email address, phone number, contacts, photos, camera, microphone or precise or approximate location. The App does not read your phone’s hardware identifiers (such as IMEI or serial number) and does not use the Android Advertising ID.
2.2 Device ID created by the App
When you first open the App, it generates a random identifier (for example, a short string beginning with the letter “d”) and stores it in the App’s private storage on your device. This device ID is not derived from your phone’s hardware and contains no personal details. The App sends it with each request to our game server so the server can keep your game data together. You can view and copy it in Settings → Copy device ID.
If you clear the App’s data or uninstall and reinstall the App, a new device ID is created and your previous progress will not be linked to it automatically.
2.3 Game data stored on our server
| Information | What it includes | Why we need it |
|---|---|---|
| Device ID | The random ID described above | To link your coins, items and progress to your copy of the game |
| Coins and items | Your coin balance and the number of hint and add-time items you hold, including the one-time welcome gift | To run the in-game economy (earning and spending coins, using items) |
| Game progress | Which themes and levels you have unlocked and cleared | To restore your progress and unlock new levels and themes |
| Daily check-in | The dates on which you claimed the daily check-in reward | To prevent the same day’s reward from being claimed twice |
While you play, the App also sends gameplay information that the server uses immediately and does not keep as a separate history: the level you are playing, the positions you tap (to confirm whether you found a difference), the differences found, remaining lives and time when a level ends, and your language setting (so level and theme names can be returned in your language).
2.4 Information stored only on your device
The App saves some preferences locally so you do not have to set them again: language, music and sound-effect switches, whether you have finished the tutorial, and the theme shown on the home screen. These stay on your device and are not sent to us, except your language setting as described above.
2.5 Technical information
Like any online service, our server and hosting provider automatically receive standard technical information when the App connects, such as your IP address, the time of the request and the address requested. This information is used to deliver content, keep the service secure and fix problems. It is not used to identify you or to build a profile of you.
2.6 When you contact us
If you email us, we receive your email address and whatever you include in your message. We use it only to answer you and to handle your request.
3. How we use information
- To provide the game: load levels and pictures, save progress, coins and items, and give rewards.
- To show theme and level names in the language you choose.
- To keep the game fair and secure, for example to stop the same reward from being claimed more than once.
- To operate, maintain and troubleshoot our servers.
- To respond to your support, access or deletion requests.
We do not use your information for advertising, profiling or automated decisions that have legal or similarly significant effects on you.
4. Legal bases (EEA, UK and similar regions)
Where data-protection laws such as the GDPR apply, we process the information above because it is necessary to provide the game you asked to use (performance of a contract), and for our legitimate interests in keeping the service secure, preventing abuse and fixing problems. When you contact us, we process your message to respond to you. Where the law requires us to keep or disclose information, we do so to comply with our legal obligations.
5. How information is shared
We do not sell your information and we do not share it for advertising. We only share information:
- With service providers that host and run our servers on our behalf, under obligations to protect the information and use it only to provide their services to us;
- For legal reasons, when required by law or a valid legal request, or to protect the rights, safety and security of our users, us or others;
- In a business transfer, such as a merger or sale of the App, in which case this policy will continue to apply to your information.
Google Play, which you use to download the App, and your device’s operating system may process information under their own privacy policies.
6. Ads, analytics and third-party services
The current version of the App does not show advertisements, does not include analytics or tracking tools, and does not offer in-app purchases. Coins and items can only be earned by playing.
If we add any of these features in a future version, we will update this policy before the feature is released, describe the providers involved and what information they receive, and ask for your consent where the law requires it.
7. How long we keep information
We keep the game data linked to a device ID for as long as it is needed to provide the game. If a device ID has not been used for 24 months, we may delete its game data. When you ask us to delete your data, we do so as described in section 10. Server logs containing technical information are kept for a limited time and then deleted. Support emails are kept only as long as needed to handle your request.
Preferences stored on your device remain there until you clear the App’s data or uninstall the App.
8. Security
We use encrypted connections (HTTPS) between the App and our server and limit access to game data to the people who need it to run the service. No method of transmission or storage is completely secure, but we work to protect your information using reasonable safeguards appropriate to the small amount of data we hold.
9. Your rights and choices
Depending on where you live, you may have the right to access, correct, delete or receive a copy of your information, to object to or restrict certain processing, and to lodge a complaint with your local data-protection authority. Residents of some U.S. states, including California, have similar rights; we do not sell or “share” personal information as those terms are defined under California law.
Because the App has no accounts, we identify your data by your device ID. To make a request, email us with your device ID (see Settings → Copy device ID). We will respond within 30 days, or sooner where the law requires.
You can also, at any time, turn music and sound effects off in Settings, change the language, stop using the App, or uninstall it. Uninstalling removes the data stored on your device but does not delete the game data on our server; to delete that, follow section 10.
10. How to delete your data
- Open the App and go to Settings. Tap Copy device ID.
- Email support@z-rex.net with the subject “Delete my data” and paste your device ID.
- We will delete the coins, items, progress and check-in records linked to that device ID within 30 days and confirm by email.
If you have already uninstalled the App and no longer have your device ID, email us anyway and describe your situation; we will do our best to help. Deletion is permanent and your progress cannot be restored afterwards.
11. Children
The App is a general-audience puzzle game and is not directed at children under 13 (or the minimum age required in your country). We do not knowingly collect personal information from children. The App does not ask for personal information from anyone, and the device ID it creates is random. If you are a parent or guardian and believe your child has provided us with personal information, for example by emailing us, please contact us and we will delete it.
12. International users
Our servers may be located in a country other than yours (currently: ). Where we transfer information across borders, we take steps required by applicable law to protect it.
13. Changes to this policy
We may update this policy from time to time, for example when we add new features. We will post the updated version on this page and change the “Last updated” date above. If the changes are significant, we will also let you know in the App before they take effect.
14. Contact us
If you have questions about this policy or your information, email us at support@z-rex.net.
Operator:
Address: