Privacy policy

Last updated: 1 September 2026

1. Data controller

YSkill Studio, France
Website: yskillstudio.com
Contact: contact@yskillstudio.com
Community: YSkill Studio Discord

2. Games and services covered

This policy applies to yskillstudio.com, the web game YSkill Survivor and the Android games Bubblime Pop, COREHOLD and STOP!.

3. Data processed

STOP!

Local operation: the best score, tutorial state, selected robot, sound, vibration and reduced-motion preferences, counts of runs, obstacles, braking actions and Perfects, best combo and duration, daily objective and streaks, and badges, ranks, mastery and previously shown tips are stored only in the app’s private storage on the device.

No current remote collection: STOP! is designed to work offline and currently has no advertising, in-app purchases, player accounts, audience analytics or tracking. The app does not request Android Internet access permission and does not remotely collect, share or send any personal or gameplay data to YSkill Studio.

Android backup disabled: current Android builds enforce android:allowBackup="false". YSkill Studio does not receive these data and cannot access them. Any older backup created by a previous version or by the platform remains under Android’s or Google’s control.

Deletion: local STOP! data can be deleted by clearing the app’s data in Android settings or uninstalling the app.

Contact: for questions about STOP!, email contact@yskillstudio.com.

COREHOLD

Local operation: progress, settings and the local leaderboard are stored only in the app’s storage on the device.

No current remote collection: COREHOLD currently has no advertising, audience analytics, player accounts or online leaderboard. The app does not remotely collect, share or send any personal or gameplay data to YSkill Studio.

Possible Android backup: depending on the device and Google account settings, Android may include the app’s local data in a system backup. This backup is managed by Android or Google; YSkill Studio does not receive it and cannot access it.

Deletion: local COREHOLD data can be deleted by clearing the app’s data in Android settings or uninstalling the app. Android may restore a previous system backup depending on the user’s settings.

Contact: for questions about COREHOLD, email contact@yskillstudio.com.

Bubblime Pop

Local progress: progress, scores, stars, virtual currencies, energy, powers, missions, completed tutorials and settings are stored on the device. In guest mode, YSkill Studio does not receive these data.

Advertising and consent: the Android version uses Google AdMob for rewarded and interstitial ads. Depending on the region and the user’s choices, Google may process the IP address, advertising interactions, diagnostic information and device identifiers, including the Android advertising ID when available.

Privacy choices: Google User Messaging Platform (UMP) collects and stores applicable choices. The Settings > Privacy button lets users reopen the options when Google makes them available.

Account and cloud save, if enabled: Google sign-in remains optional. If this feature is enabled and selected, Firebase Authentication may process the name or nickname, email address, Firebase identifier and technical data required for authentication. Cloud Firestore may then store a copy of progress to synchronise it. This feature is not active in the current version while Firebase remains unconfigured.

Optional diagnostics: Bubblime diagnostics are disabled by default and are transmitted only if the user enables them and YSkill Studio configures an HTTPS service. They may then include operational events, the app version and a limited error message, without any email address added by Bubblime Pop.

Website and YSkill Survivor

Local gameplay data: scores, progress and settings may be stored on the device in the browser.

Technical data: Cloudflare may process the IP address, browser and visited pages in its logs to maintain the website’s security and operation.

4. Purposes

Provide the games, and save and restore progress.
Secure optional sign-in and synchronise cloud saves when these features are enabled.
Display and measure ads, prevent advertising fraud and collect privacy choices.
Maintain website security and improve stability when optional diagnostics are enabled.

5. Legal bases

Performance of the service to provide the game and requested features.
Legitimate interests in security, fraud prevention and service improvements.
Consent where required by law for advertising, certain identifiers or optional diagnostics.

6. Service providers and sharing

Android/Google system backup: may retain a copy of local STOP! or COREHOLD data only according to the user’s backup settings; YSkill Studio does not receive that copy.
Google AdMob and Google UMP: advertising, measurement, fraud prevention and management of privacy choices.
Google Firebase Authentication and Cloud Firestore: only if sign-in and cloud saves are enabled.
Cloudflare: website hosting, delivery and technical logs.

YSkill Studio does not sell players’ personal data. Providers apply their own policies and obligations.

Google Privacy Policy · Firebase Privacy · Cloudflare Privacy Policy

7. Retention

Local data remain on the device until deleted through Android, the browser or uninstallation.

Any Android system backup of STOP! or COREHOLD follows the settings and retention periods applied by Android or Google to the user’s account.

Cloudflare logs and data processed by Google are retained according to the criteria and periods published by those providers.

If cloud saves are enabled, they are retained while the account is active or until a legitimate deletion request.

8. Choices, consent and advertising ID

Users can play as guests, change their advertising choices through Settings > Privacy when available, reset or delete the Android advertising ID and disable optional diagnostics.

Withdrawing consent does not affect the lawfulness of processing carried out beforehand.

9. Access, correction and deletion

To request access, correction or deletion of data controlled by YSkill Studio, email contact@yskillstudio.com.

Local data can be deleted through Android settings or by uninstalling the game. As STOP! and COREHOLD currently have no YSkill Studio account or remote storage, their data are deleted directly on the device by clearing the relevant app’s data or uninstalling it.

Optional account: before account creation is publicly enabled, Bubblime Pop will also provide an in-app process and a web page for requesting deletion of the account and associated data. The current version does not create a Firebase account.

A complaint may be submitted to the CNIL, the French data protection authority.

10. Children

Bubblime Pop, COREHOLD, STOP! and YSkill Survivor are not designed or marketed for children. Applicable age settings and ratings are shown on their distribution listings.

11. Third-party content

YSkill Survivor uses music loops from the FREE Music Loop Bundle by Abstraction / Tallbeard Studios, under the CC0 licence.

12. Changes

This policy may be updated when games, providers or obligations change. The date at the top indicates the latest revision.

Summary

YSkill Studio operates yskillstudio.com, YSkill Survivor, Bubblime Pop, COREHOLD and STOP!.

STOP! stores its score, tutorial, selected robot, preferences, statistics, daily objective, badges and obstacle mastery only on the device. It has no ads, in-app purchases, analytics, player account, Internet permission or remote data collection, and current Android builds disable application backup. Its local data can be removed by clearing the app data or uninstalling the app.

COREHOLD currently stores progress, settings and its local leaderboard only on the device. It has no ads, analytics, player account or remote data collection. Its local data can be removed by clearing the app data or uninstalling the app; Android system backup may apply depending on the user's settings.

Bubblime Pop stores guest progress locally and uses Google AdMob and UMP on Android. Optional Google sign-in and Firebase cloud save are not active in the current release. Users can manage available privacy choices in the game and contact contact@yskillstudio.com for access or deletion requests.

ÈRES - player accounts and multiplayer

The online version of ÈRES offers solo play, multiplayer and email account creation. The email address, username, profile data, session information and online match results are processed by the game server to provide these features. Passwords are stored as cryptographic hashes, not as plain text.

Emails are used to verify accounts and enable password recovery. Community features may process player relationships, messages and reports. ÈRES offers Google, Facebook and Discord sign-in in addition to email accounts. These services are involved when that method is selected. X sign-in is not currently enabled.

Solo progress remains local to the browser and game address you use. Creating an account does not imply automatic syncing of the entire solo campaign. The new version uses arena.yskillstudio.com; previous local data on the studio website is neither erased nor automatically transferred.

For questions or requests about your ÈRES data, contact contact@yskillstudio.com. The general contact and rights-request provisions in this policy also apply to ÈRES.

Information about ÈRES accounts, the shop and data deletion is detailed in the game’s privacy policy. ÈRES privacy policy.