Matryoshka Puzzle Privacy Policy

Version of 30 October 2026, identifier matryoshka-privacy-2026-10-30. This is a translation; if it differs from the Russian version, the Russian version prevails.

1. General

1.1. This Policy explains what data is processed when you use the mobile game Matryoshka Puzzle (the Game), why, on what legal basis, how long it is kept and how to delete it. The Policy follows Russian Federal Law No. 152-FZ of 27 July 2006 "On Personal Data".

1.2. The personal data operator is the sole proprietor Denis Vladimirovich Likhachev, Tax ID (INN) 860236691422, registration number (OGRNIP) 326784700256377 (the Operator). The Operator is entered in the Russian register of personal data operators under number 78-26-215977.

1.3. Contact for data questions and requests: support@asitdiary.ru. Please put "Personal data" in the subject. Denis Vladimirovich Likhachev is personally responsible for organising the processing of personal data.

1.4. The Game works without registration or an account. The Operator does not ask for your name, email address, phone number, date of birth, location, contacts, photos or any other information about who you are. No special categories of personal data or biometric data are processed.

2. Game saves and system backups

2.1. Level progress, stars, records, achievements, selected skins and scenery, game settings and unfinished games are stored on your device. The Operator does not receive a copy of your game profile.

2.2. Android may include a separate copy of your game profile in a system backup and transfer it to a new device during restore. This depends on your settings, device and available backup service. The system service you select handles that copy under its own rules; the Operator does not receive it. The Game has no cloud sync service of its own.

2.3. Only the data in clause 2.1 is included in the system copy. The installation ID, statistics queue, crash logs and statistics consent are excluded. On a new device statistics are off, and the Game asks you to read the documents and choose whether to consent again; a new random installation ID is created when the statistics service starts.

2.4. Uninstalling the Game or clearing its data deletes local saves. Progress can be restored if the system service saved and restored a suitable backup. The Operator cannot guarantee that a backup exists or can be restored; you manage system backups in your device or backup service settings.

3. Game statistics and crash reports

3.1. Purpose: to learn which levels are too hard, where players make mistakes and stop playing, how ads affect the game and where the Game crashes, and to improve the Game.

3.2. Data processed:

• a random installation ID that the Game creates on first launch. It is not linked to your name, an account, a phone number or the device's advertising ID, but it tells one installation from another, so the Operator treats this data as personal data;
• the Game version and build, the store it was installed from, the Android version, the device manufacturer and model, the language and time zone;
• game events: session start and end, screens opened, the start and outcome of every level attempt (level number, result, number of moves and the minimum possible number of moves, time, stars, undos and hints used, rejected moves by type of mistake), time spent reading the rules, marathon stages, achievements earned, skin choices and settings changes;
• ad information: ad offers and displays, the placement, the result of the display and the revenue from it as reported by the ad network;
• crash information: the error text, the stack trace of the program code, the time of the crash and the Game version.

3.3. By first tapping "Accept and continue", you consent to statistics under the separate statistics consent document. If a collector is available in this release, statistics are enabled by default after accepting the documents. Collection does not start before acceptance. You can turn statistics off using "Anonymous statistics" in Settings without limiting gameplay. Your previously saved choice, including turning statistics off, is preserved when accepting updated documents.

3.4. Retention: game events are kept for 90 days from receipt, crash information for 30 days. The installation record is deleted together with its last events. Database backups are kept for 14 days, so deleted data disappears from them within 14 days.

3.5. When statistics are sent, the Operator's server receives the device's IP address only to deliver the data and protect against overload during the request. The IP address is not recorded in the statistics database or in server logs.

4. Advertising

4.1. Purpose: showing ads that keep the Game free, counting displays and granting the reward for voluntarily watching an ad (extra hints and undos).

4.2. The ad provider depends on the country: Yandex Mobile Ads (Yandex LLC) in Russia; Petal Ads (Huawei) in other supported countries, when enabled in the build. On ad requests and displays, the selected SDK sends its provider the IP address, technical information about the device, operating system, Game and network connection, and information about ad requests, displays, views and taps. The country is read locally from the mobile network or SIM, without GPS. If it is unknown, Petal Ads is selected when enabled, including on devices in Russia whose country could not be determined. Only the selected SDK starts after the documents are accepted. Huawei may process advertising data outside Russia under its privacy policy. https://consumer.huawei.com/en/privacy/privacy-policy/

4.3. The Game requests non-personalised ads only: it does not allow the ad network to use data for personalisation, turns off location sharing, enables the mode for younger users and does not provide the device's advertising ID (Google AD_ID) — the permission to access it is removed from the Game. The Operator does not build advertising profiles of users.

4.4. Legal basis: the Operator's legitimate interest in distributing the Game for free, provided that your rights and freedoms are not violated (clause 7, part 1, article 6 of Law No. 152-FZ). The Operator does not store this data. The ad network processes it under its own documents: https://yandex.com/legal/confidential/ Petal Ads (Huawei): https://consumer.huawei.com/en/privacy/privacy-policy/

4.5. Ad revenue reaches the Operator only as part of the statistics (section 3) and only with your consent.

4.6. The Operator may receive aggregated reports of the ad network on installations, sessions and ad displays through the AppMetrica service (Yandex LLC). The Operator uses only these aggregated reports and receives no information about individual users from them.

5. Update checks

5.1. When you tap "Check for updates", the Game contacts the store for which the build was released: Google Play through Google Play In-App Updates, RuStore through RuStore AppUpdate, or Huawei AppGallery through Huawei Update SDK. The corresponding store checks for and installs updates. In the AppGallery build, "Update app" opens the Game's AppGallery listing to install the update. Legal basis: your action. Other stores' update modules are not included in the build.

5.2. When checking for and installing updates, the corresponding store may process technical information about the Game, its version, the device, installation and the result of the operation under its own rules. The Operator does not receive this information from the update module. Google's policy: https://policies.google.com/privacy?hl=en ; RuStore's policy: https://www.rustore.ru/legal/privacy ; Huawei's policy: https://consumer.huawei.com/en/privacy/privacy-policy/

6. Support requests

6.1. Purpose: to answer your request.

6.2. Data: your email address, the message and attachments, and the technical details the Game puts into the email template: the Game version, the operating system version, the device model and the installation ID. You can remove them from the email before sending it.

6.3. Legal basis: your request, made on your own initiative. Retention: as long as needed to answer, but no longer than one year after the last message, unless longer storage is needed to resolve a dispute.

7. Processing operations

7.1. Processing is automated; answering a request involves the Operator personally. The Operator may collect, record, organise, accumulate, store, update, retrieve, use, delete and destroy data.

7.2. The Operator makes no decisions with legal consequences for you based solely on automated processing and does not profile users.

8. Recipients, localisation and cross-border transfer

8.1. Statistics are stored on the Operator's server. The server and the support mailbox are hosted by Russian hosting providers that keep them running and do not use the data for their own purposes.

8.2. Data is also received by:

• Yandex LLC — when ads are shown (section 4);
• Huawei (Petal Ads): 4.2.
• the Google Play (Google), RuStore or AppGallery (Huawei) app store — when the corresponding build of the Game is installed and updates are checked (section 5);
• public authorities — only upon a lawful request.

8.3. The Operator does not sell data and does not share statistics with ad networks.

8.4. Statistics and support data are stored in databases in the Russian Federation. This data is not transferred across borders.

9. Withdrawing consent and deleting data

9.1. You can withdraw your consent to statistics at any time: Settings → Anonymous statistics. After you turn it off, no new data is collected, unsent data is deleted from the device, and the Game sends the server a request to delete all data of this installation, which the server deletes as soon as it receives the request. If the device is offline, the request is sent with the next connection.

9.2. You can also send a withdrawal or deletion request to support@asitdiary.ru with your installation ID. The ID is filled into the email that opens from Settings → Contact support. The Operator destroys the data no later than 30 days after receiving the withdrawal.

9.3. Uninstalling the Game deletes all data on the device but does not send a request to the server. In that case statistics on the server are deleted when the retention periods end or at your request.

10. Your rights

10.1. You have the right to obtain information about the processing of your data, to demand that it be corrected, blocked or destroyed, to withdraw consent, to object to processing, and to appeal against the Operator's actions to Roskomnadzor (the Russian data protection authority) or a court.

10.2. Send requests to support@asitdiary.ru. The Operator replies within the time limits set by Law No. 152-FZ. To find the data of a particular installation the Operator needs its installation ID; without it the Operator cannot tell which data relates to you.

11. Children

11.1. The Game is rated 0+. It does not ask for a date of birth and shows only non-personalised ads.

11.2. If a user is under 14, a parent or other legal guardian decides on consent to statistics. The legal guardian can turn statistics off in Settings at any time or request deletion via support@asitdiary.ru.

12. Security

12.1. Data is sent over a secure connection (HTTPS). Only the Operator has access to the server and the database. The statistics database is separate from other systems.

13. Changes to this Policy

13.1. The current version is available in the Game (Settings → Legal information) and at https://api.readysteadybrickit.com/matryoshka/legal/privacy-en

13.2. If the changes are significant, the Game shows the new version at the next launch.