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Privacy Policy

Introduction

Fuji Bit Inc. ("we", "us") respects the privacy of users of the mobile app "path-to-one" (Japanese title: 呪われた数の迷宮; iOS / Android; the "App"). This Privacy Policy explains what information the App handles, where it is sent, why, how long it is kept, and the choices available to you. If this English version and the Japanese version differ, the Japanese version prevails.

You can play the App without creating an account. Joining the weekly ranking and linking an account are both optional, and every game feature remains available if you do neither. In v4.0 we switched our ad provider from Google AdMob to Pangle and stopped using Google AdMob. A full list of data items, purposes and recipients, and how to request access, correction or deletion, is also available on the Personal Data Handling page.

1. Summary of the information we handle

Information	Sent to	Purpose	Retention	When it is sent / collected
Game progress (adventure records, achievements, grimoire, curse marks, BGM mute, settings, your ad choice)	Not sent (stored on your device only)	Running the game and showing your records	Until you delete the App	Saved on the device during play
Advertising identifiers (Android advertising ID; iOS IDFA only if allowed via ATT, and IDFV), IP address and approximate location, device information, ad interaction data, diagnostics (crash and performance data)	Pangle (Bytedance Pte. Ltd., Singapore)	Ad delivery, measurement and fraud prevention. Personalized ads only with your consent	As set out in Pangle's privacy policy	When ads are shown, after you respond to the ad screen at first launch (not collected if you purchased "Remove Ads")
Nickname (1-16 characters, shown publicly to other players)	Google Firebase (Cloud Firestore)	Display on the weekly ranking	Until you delete your account	When you tap "Agree and register" on the weekly ranking consent screen, and when you change your nickname
Weekly ranking results (score, rank, cleared or not, number of attempts, the week's start number, a run ID used to prevent duplicate submissions, the time your best score was reached (used to break ties), update time)	Google Firebase (Cloud Firestore)	Compiling and displaying the weekly ranking	Until you delete your account (past weeks' boards are kept)	After you join, whenever you finish a weekly ranking run (if offline, kept temporarily on the device and sent later, only as a record of the account that played the run)
Weekly champion (1st place) record (anonymous authentication ID, nickname, that week's best score, the number you chose as the champion's reward and when you chose it)	Google Firebase (Cloud Firestore, Cloud Functions)	Granting the champion's reward (choosing the number for the week after next) and showing the chooser's nickname in the week that uses the chosen number	Until you delete your account (on deletion, the anonymous authentication ID and nickname are erased; the chosen number remains as that week's puzzle)	When you finish a week in 1st place (recorded by the server when the week closes), and when you choose a number
Firebase anonymous authentication ID (UID)	Google Firebase (Authentication, Cloud Firestore)	Linking ranking records to you and preventing others from overwriting them	Until you delete your account	Issued automatically when you tap "Agree and register"
Linked account information (Apple / Google account identifier, email address)	Google Firebase (Authentication)	Carrying your records to another device, identity verification	Until you unlink or delete your account	Only if you choose to link an account
Purchase information	Apple (App Store) / Google (Google Play). Purchase state is kept on the device only	Granting purchased items and restoring purchases	On device: until you delete the App. Stores: per each store's policy	On purchase or restore
Daily notification schedule (notification permission state, scheduled times)	Not sent (stored on your device only)	Showing a reminder around 18:00 each day	Until you turn notifications off or delete the App	Scheduled on the device when you allow notifications, when the App starts, and similar

2. Information we collect

2-1. Information stored only on your device

Your adventure records (score history), achievements, grimoire, curse marks (in-game currency), unlocked builds and difficulty tiers, BGM mute setting, ad choice and similar data are stored only on your device (UserDefaults on iOS, SharedPreferences on Android). They are not sent anywhere. Even if you join the weekly ranking, only the items listed in 2-3 below are sent.

2-2. Advertising (Pangle)

The App uses Pangle, an advertising platform operated by Bytedance Pte. Ltd., to show a banner ad at the bottom of the screen and an interstitial (full-screen) ad after you tap the button on the victory or game-over screen. The Pangle SDK starts only after you respond to the ad screen described in section 3, and collects the following information for ad delivery, measurement, analytics and fraud prevention. In accordance with Pangle's privacy policy, this information may be shared with Pangle's partners involved in ad delivery.

Advertising identifiers (Android advertising ID (GAID); iOS IDFV; and iOS IDFA only if you allow tracking via ATT)
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. For how Pangle handles information, see the Pangle End User Data Privacy Policy.

2-3. Weekly ranking (Google Firebase)

The weekly ranking is an optional feature where every player takes on the same number under the same conditions each week and competes for the best score. Only if you tap "Agree and register" on the consent screen shown from "Weekly Challenge" on the title screen, the following information is sent to and stored in Google Firebase (Cloud Firestore, Firebase Authentication and Cloud Functions). If you choose "Not now" or do not respond to the consent screen, no ranking data is sent at all.

Nickname (1-16 characters; or tap "Random" to have one generated automatically, starting with "Wanderer#"). Your nickname is shown publicly to other players viewing the weekly ranking. Please do not use your real name or anything that identifies you.
Weekly ranking results: your best score for the week, rank, whether you cleared, number of attempts, the week's start number, a run ID to prevent the same run from being counted twice, the time your best score was reached (server time; used to rank whoever reached a tied score first higher), and the update time
Weekly champion (1st place) record: if you finish a week in 1st place (on a tie, whoever reached that score first), the server records your anonymous authentication ID, nickname and best score for that week as the week's champion when the week closes (in Cloud Firestore's rankingWeeks / rankingChoices). As the champion's reward, you choose the cursed number for the week after next (a number from 100 to 9999 that takes at least 70 steps to reach 1), and you can change it until Sunday 23:55 (JST). The chosen number and when you chose it are also recorded, and in the week that uses it, the screen shows "Chosen by (your nickname)".
Firebase anonymous authentication ID (UID): an identifier issued automatically per device by Firebase Authentication

By the nature of a ranking, your nickname and results such as your score are visible to other players. Results of runs finished while offline are kept temporarily on the device and sent automatically the next time a connection is available, only as a record of the account that played them (if you switch to a different account, they are not sent as that account's records). However, each week accepts records only while it is open (from Monday 00:00 to 00:04 the following Monday, Japan time); a record sent after its week has closed is not counted. Submitted scores are validated by server-side rules, and only values that the scoring formula can produce are accepted. The number played in each week is fixed by the server before that week starts. Joining the ranking alone does not send your name, email address or phone number.

2-4. Account linking (optional)

So that you can carry your ranking records and nickname to another device when you change devices or reinstall, you may optionally link an account from the "Account" screen in the Weekly Challenge (Apple ID or Google account on iOS; Google account on Android). When you link, Firebase Authentication records the Apple / Google account identifier and your email address (or Apple's relay address if you chose "Hide My Email"). For Google, your display name and profile image URL may also be recorded. These are not shown in the ranking and are not disclosed to other players. The App never receives your Apple / Google password. You can unlink at any time with "Unlink" on the "Account" screen; your records and nickname remain after unlinking.

2-5. In-app purchases

Payments for the one-time purchases "Remove Ads", "Unlock Number Input" and "Overlord Build" are processed by Apple (App Store) on iOS and Google (Google Play) on Android. We never receive payment information such as credit card numbers. Your purchase state is stored only on your device (on Android, the ad-free entitlement is cached locally) and is not sent to our servers.

2-6. Daily notifications (on your device only)

The App may show a notification around 18:00 (device time) each day about the Daily Challenge or the Weekly Challenge (none on a day you have already played that day's Daily Challenge). These notifications are scheduled and shown on your device only; they are not push notifications sent from our or any third party's servers, and no information is sent anywhere for them. The App asks for notification permission once, after your first finished run, and never at launch. You can turn notifications off at any time in your device's Settings app.

3. Ad display and your ad choices

Before starting any ad SDK, the App shows a screen about ads.

iOS: At first launch, the App shows an explanation screen about ads (with a single "Continue" button), followed by the iOS App Tracking Transparency (ATT) tracking permission dialog. Personalized ads (ads tailored to your interests) are delivered only if you have not chosen "Don't personalize" in the App's "Ad settings" AND you have allowed tracking via ATT. If either condition is not met, only non-personalized ads are delivered and the IDFA is not used.
Android: At first launch, the App shows a screen with two options: "Show personalized ads" and "Don't personalize". If you choose "Don't personalize", the App tells the Pangle SDK that you have not consented to personalized ads, and only non-personalized ads are delivered.

Until you respond to this screen, the Pangle SDK is not started, no ads are requested, and no information is collected by the ad SDK. You can change your choice at any time from "Ad settings" on the title screen. On iOS, you can also change tracking permission in Settings > Privacy & Security > Tracking. The game plays exactly the same whichever you choose.

If you have purchased "Remove Ads", no ads are shown, the ad screen is not displayed, and the Pangle SDK is never started.

4. Opting out of advertising identifiers

iOS: Turn off tracking for the App in Settings > Privacy & Security > Tracking, and the IDFA will no longer be used. You can also choose "Don't personalize" in "Ad settings" on the title screen.
Android: You can reset or delete your advertising ID under "Ads" in the device Settings app (located under "Google" or "Privacy" depending on the device). You can also choose "Don't personalize" in "Ad settings" on the title screen.

5. Third-party services we use

Pangle (Bytedance Pte. Ltd., Singapore): ad delivery — Pangle End User Data Privacy Policy
Google Firebase (Cloud Firestore, Firebase Authentication, Cloud Functions; provided by Google LLC, USA): storing weekly ranking and account linking data, and processing account deletion — Firebase Privacy and Security
Sign in with Apple (Apple Inc., USA; iOS only): optional account linking — Apple Privacy Policy
Google Sign-In (Google LLC, USA; iOS and Android): optional account linking — Google Privacy Policy
App Store (Apple Inc.) / Google Play (Google LLC): payment for in-app purchases

We do not sell any information. Except as required by law, we do not provide information to third parties beyond the purposes above.

6. Provision to third parties in foreign countries

Using the App may involve personal information (including personally referable information) being provided or sent to businesses outside Japan. In accordance with Japan's Act on the Protection of Personal Information, we provide the following information.

Pangle (Singapore): Advertising-related information is sent to Pangle, operated by Bytedance Pte. Ltd. in Singapore. Singapore has the Personal Data Protection Act 2012 (PDPA). The countries where data is stored or processed are set out in Pangle's privacy policy.
Google Firebase (USA): Weekly ranking and account linking data is stored on Google Cloud servers via Firebase, provided by Google LLC in the USA. The Cloud Firestore database and Cloud Functions are located in the Tokyo region (asia-northeast1), but authentication data in Firebase Authentication and other data may be processed on servers outside Japan, including in the USA. The USA has no comprehensive federal law equivalent to Japan's Act on the Protection of Personal Information; personal information is protected by state laws such as the California Consumer Privacy Act (CCPA) and sector-specific laws.
Apple / Google account linking (USA): If you choose to link an account, the authentication services of Apple Inc. / Google LLC are used.
Measures taken by recipients: Google applies security measures such as encryption and access control under the Firebase data processing and security terms. Pangle, Apple and Google handle information in accordance with their respective privacy policies.

For information on each country's data protection system, see the Personal Information Protection Commission of Japan's survey of foreign personal information protection systems (Japanese).

7. Data retention and deletion

Weekly ranking data (nickname, results, anonymous authentication ID): kept until you delete your account. Each week's ranking board is kept after the week ends.
Weekly champion records: kept until you delete your account. On deletion, the anonymous authentication ID and nickname are erased (the chosen number remains as that week's puzzle).
Linked account information: kept until you unlink or delete your account.
Advertising-related information: as set out in Pangle's privacy policy.
On-device data: kept on the device until you delete the App.
Support emails: kept for as long as needed to respond, then deleted.

You can delete your account and weekly ranking data at any time in the App via Title screen → Weekly Challenge → Account → "Delete account". For the steps, exactly what is deleted, and how to request deletion by email if you cannot use the App, see Account and Data Deletion. To request deletion of information collected by Pangle, please contact Pangle via the contact details in its privacy policy.

8. Children's privacy

The App is not directed at children under 13, and we do not knowingly collect personal information from children under 13. Minors should obtain a parent's or guardian's consent before joining the weekly ranking, linking an account or making in-app purchases. Parents or guardians who wish to have their child's information deleted may contact us below.

9. About this website

This website (path-to-one.fujibit.com) does not use cookies and has no analytics tools or ads. The hosting provider may record access logs (IP address, browser type, etc.) for operation and security.

10. Changes to this policy

We may update this Privacy Policy in response to changes in law or in the App's features. If there are significant changes, we will announce them on this page.

11. Contact

For questions about this Privacy Policy, please contact:

Fuji Bit Inc.
support@fujibit.com

Last updated: October 10, 2026