Privacy Policy

Introduction

Fuji Bit Inc. ("we") respects the privacy of users of "Labyrinth of Probability" (the "App") and is committed to protecting personal information. This Privacy Policy explains what information the App collects and how it is used.

Information We Collect

The App does not collect personally identifying information (such as your name, address, or phone number). However, the following features and third-party services may collect or transmit certain information.

Advertising (Pangle)

The App uses Pangle, an advertising platform operated by Bytedance Pte. Ltd. (Singapore), to show a banner ad at the bottom of the screen and a full-screen ad after you finish a run. The Pangle SDK collects the following information for ad delivery, measurement and fraud prevention. In accordance with Pangle's privacy policy, it may be shared with Pangle's partners involved in ad delivery.

Advertising identifiers (Android advertising ID; iOS IDFV, and IDFA only if you allow tracking)
IP address and the approximate location derived from it (country / region level)
Device information such as model, OS version and language setting
Ad interaction data such as impressions and taps
Diagnostics such as crash and performance data

The App does not request the device location (GPS) permission. See the Pangle End User Data Privacy Policy for details. In v4.0.0 we switched our ad provider from Google AdMob to Pangle and stopped using Google AdMob.

Your choice about personalized ads

iOS: At first launch, the App shows the iOS App Tracking Transparency (ATT) dialog. If you allow tracking, personalized ads (ads tailored to your interests) are delivered; if not, only non-personalized ads are delivered. You can also choose "Show non-personalized ads" later from "Ad settings" on the title screen. Personalized ads are delivered only if you allow tracking AND have not chosen non-personalized ads in "Ad settings".
Android: At first launch, the App shows a screen with two options, "Show personalized ads" and "Show non-personalized ads", and passes your choice to the Pangle SDK.

Until you answer, the Pangle SDK is not started, and no ads are requested and no information is collected by it. You can change your choice at any time from "Ad settings" on the title screen. The game is the same whichever you choose. If you have purchased "Remove Ads", no ads are shown and the Pangle SDK is never started.

Online Leaderboards (Firebase)

The App uses Google Firebase (Authentication / Cloud Firestore) to provide online leaderboards. The following leaderboard-related information is sent to and stored in the cloud:

Anonymous account identifier (UID): a random ID automatically generated by Firebase anonymous authentication. It is not linked to your name or email address.
Display name (nickname): a name you enter for leaderboard display. If left blank, a random name is generated.
Game results: best score, rank (S to D), rooms reached, whether you cleared the labyrinth, number of smart calls (times you picked the best option), total plays, total clears and last update time, kept per mode (Labyrinth / Master Labyrinth) and per period (all-time, daily, weekly, monthly), plus the Daily Labyrinth (daily only).

This information is intended to be shown to other players. Participation in the online leaderboards is optional (opt-in) and is off by default. Until you opt in, the app performs no Firebase initialization, creates no anonymous UID, and uploads no scores. You can withdraw at any time from the "Account Linking" screen in the app, after which sending and fetching stop.

Account Linking (Apple / Google)

To carry your leaderboard scores across device changes or reinstalls, you may optionally link an Apple ID or Google account. If you link an account, an account identifier and email address provided by Apple / Google may be obtained and stored through Firebase Authentication for sign-in. Linking is optional, and you can remove it at any time using the "Unlink" action in the App.

In-App Purchases (App Store / Google Play)

In-app purchases are processed through Apple's App Store on iOS and Google Play Billing on Android. We do not directly obtain payment information. The available purchases are "Remove Ads" and "Master Labyrinth" (the same product as the former "Chain Caster Build"), both one-time (non-consumable). Purchase state is stored on your device.

Local Data Storage

Recent score history, the BGM mute setting, your ad choice, the display state of in-game hints and the date you last played the Daily Labyrinth for the record are stored only on your device and are not sent anywhere. On-device data is removed when the App is uninstalled. Only when you use the online leaderboards above, ranking data is also stored in the cloud (Firestore) as described.

Sharing with Third Parties

We do not sell your information. We do not provide it to third parties, except for transmission to the companies above (Pangle / Google / Apple) as necessary to provide ads, leaderboards, account linking and in-app purchases. A full list of the data we handle, the countries it is sent to and how to make requests is on the Personal Data Handling page.

Data Deletion

If you wish to delete data sent to the online leaderboards (anonymous UID, nickname, scores, linking information), please follow the steps on the Account & Data Deletion Request page. On-device local data can be deleted by uninstalling the app.

Children's Privacy

The App is not directed at children under 13 and does not knowingly collect personal information from them. Minors should get a parent's or guardian's consent before joining the leaderboards, linking an account or making in-app purchases.

Changes to This Policy

This Privacy Policy may be updated as needed. If there are significant changes, we will notify you on this page.

Contact

For questions about this Privacy Policy, please contact us at:

support@fujibit.com

Last updated: October 24, 2026