プライバシーポリシー

Mosaic Trail Stack — App Privacy

Effective 7 September 2026. This section covers the Mosaic Trail Stack iOS and Android game published by Yuki Inaba. It is separate from this website’s cookie, comment and contact practices.

The game does not collect or transmit personal information, gameplay history, device identifiers, location, analytics or advertising data to the developer or third parties. It contains no accounts, advertising, tracking SDKs, in-app purchases, chat, or user-uploaded content.

Completed trails, mosaic restoration, the current trail, language and sound settings are stored locally on your device for gameplay. They are not uploaded to us. Removing the app removes its local save. Device operating systems and their backup services may handle device backups under your own system settings and their privacy policies.

The game provides the same offline, data-free experience for younger and older players. It does not request age, camera, microphone, location or advertising permissions. If you voluntarily contact info@ymha.biz outside the game, we receive the information in your email to respond to your request. Do not send sensitive information or a child’s personal details. For privacy questions or deletion of support correspondence, contact the same address.

Mosaic Trail Stack — Privacy for the usage-measurement update

Prepared 14 September 2026. This section applies to the iOS and Android update published by Yuki Inaba that includes Usage measurement in Pause → Privacy. Earlier sections continue to describe older versions without this feature. This update does not change this website’s own privacy practices.

Your game and your choices

All 40 trails, four mosaics, Undo and Retry remain free. There are no accounts, purchases, chat, media uploads or cloud saves. Your playable save, sound, language, optional frames and privacy choices are stored on your device. Separate usage events described below include stage attempts and results; these are not a restorable copy of your save. Removing the app removes its local save. Operating-system backups follow your device settings and the backup provider’s policies.

Ads are off at first launch. In Pause → Privacy, an adult may choose to enable ads after reading the disclosure. Personalization starts off and “Do not sell or share my data” starts on. An age range must be selected, and supported platform age information must confirm adulthood before the advertising SDK can initialize. Players under 18, players with unknown age, and players who decline keep the full game without initializing the advertising SDK. We do not send the selected age or platform age information to AppLovin. The operating system or app store may process an age-sharing request under its own policies.

Optional advertising

When an eligible adult enables ads, AppLovin MAX may process device and network identifiers, approximate location, ad interactions and diagnostics for advertising, measurement, fraud prevention and improvement of its services and AI technology. AppLovin may share this information with its service providers and advertising partners. Our game does not provide AppLovin with puzzle history, email addresses or age ranges. See AppLovin’s privacy policy for its processing, retention, international transfers and rights information.

Eligible ads may appear below gameplay or between completed trails. Watching a rewarded video is optional and earns a decorative Sunburst frame; that same frame is also earned by restoring the artwork’s 10 trails. Ads never purchase tiles, unlock trails or replace free recovery. Availability varies by device, age-sharing support and network conditions.

Usage measurement

The game includes version 0.1.1 of our shared usage-measurement SDK. Measurement starts off and is separate from the optional advertising choice. In Pause → Privacy, you may allow it from the next launch. We do not reconstruct play before consent. It sends an app-scoped random installation ID, session and event IDs, timestamps, app/build/content versions, stage attempts, results and retries, completion, and applicable advertisement opportunity, request, impression, failure, reward and revenue notifications. Ad revenue notifications can include the placement, format, network, amount, currency and precision supplied by the advertising SDK. It does not send your name, email address, selected age range, IDFA or a copy of the playable save.

Yuki Inaba uses these records to understand first sessions, stage difficulty, return visits and observed ad revenue, and to evaluate bounded game configurations and experiments. Cloudflare hosts the measurement service and stores records on our behalf. The measurement identifier is scoped to this game; it is not used by this SDK to track you across other apps. This is distinct from AppLovin’s optional advertising processing above. Network requests expose an IP address to the hosting service; the measurement backend uses it for rate limiting, while the SDK event schema does not include an IP address or location field.

Unsent events expire after 72 hours and local queues are size-limited. Raw server event records are retained for up to 180 days; short-term duplicate indexes are retained for 35 days. Reports use a 180-day observation window. A deletion ledger is retained to prevent deleted records from being recreated by delayed delivery.

In Pause → Privacy, choose Stop usage measurement to stop collection and clear unsent SDK records on this device. This does not change your game progress or advertising choice and does not automatically delete records already sent. If saving the choice or clearing local data fails, the game reports that limitation and offers retry. For access or deletion of previously sent records, email info@ymha.biz with the support code shown in that same screen. Copy the code before stopping and leaving the screen; the game does not retain it after stopping. The code identifies the app, environment and installation, not your name. No email is sent automatically. Without a code, we may be unable to identify past records after app removal or identifier deletion.

Change your mind or request help

Use Pause → Privacy → Turn ads off to stop new ad requests and remove banners. An ad already displayed may finish. Turning ads off does not erase information previously collected by AppLovin. Personalization and sale/share choices can also be changed here. On iOS, tracking permission is requested only when you choose personalized advertising and permit sale/share; declining does not limit gameplay or the free route to frames. Your device’s tracking settings still apply.

For access or deletion of data held by AppLovin, follow the current instructions under Manage Your Privacy Choices in AppLovin’s policy. For our support correspondence, or questions about this game, email info@ymha.biz. Voluntary emails are used to respond to your request. Do not send sensitive information or a child’s personal details. We receive the ad-event and revenue notifications described under Usage measurement; other records held by AppLovin remain subject to its policy.

Reef Slide Sort privacy

Publisher: Yuki Inaba. Contact: info@ymha.biz. This section concerns Reef Slide Sort, not other apps covered on this page.

Game data and your choices

The game stores progress, stars, bubble coins, cosmetics, the current board, undo history, language, sound/motion settings and advertising choices on your device. It has no game account or gameplay analytics upload. Operating-system backups may retain app data according to your device settings. Clearing app data can remove local progress and choices; it does not erase information previously sent to an advertising provider.

Ads start off. You can play every stage and use free recovery without ads. Settings → Advertising choices lets you choose an age category, allow or refuse advertising, allow personalization separately, and opt out of sale/sharing. Unknown age and players under 18 keep ads off. Before enabling ads, the app also asks the platform for an age range; missing or declined information leaves ads off. The platform age range is used for eligibility, not stored or sent to AppLovin. This advertising threshold is separate from the store content rating.

Optional advertising

If eligible ads are enabled, AppLovin may process device identifiers, IP address and app/ad activity for advertising and measurement. On iOS, system tracking permission is separate. Turn off Allow advertising to withdraw future ad requests. This does not delete previously collected provider data. See AppLovin’s privacy policy, retention information and access/deletion choices.

If you email support, your email address and message are used to respond. Contact the publisher for questions or requests concerning information you send directly. Avoid sending sensitive information.