Privacy Policy
// ARURAKU — Last updated: October 2, 2026
Fuji Bit Inc. ("we") operates the iOS and Android app "ARURAKU" ("the App"). This policy explains how information is handled in the App.
$ Information collected
We ourselves do not collect information that identifies you. However, the third-party services built into the App may collect the following.
- Advertising data: the App shows ads through Pangle (an advertising platform operated by Bytedance). The Pangle SDK starts only after you have answered the ad choice described under "Ads and your ad choice" below; until then the ad SDK collects nothing and no ad is requested. After that, for ad delivery, measurement, analytics and fraud prevention, the Pangle SDK may collect the following and share it with advertising partners that bid for the ad:
- Device identifiers (the Android advertising ID; on iOS the IDFA, only if you allow tracking under App Tracking Transparency)
- IP address and the approximate location inferred from it (country, region or city level)
- Device information such as model, OS version and language
- Interactions such as ad views and taps, and app usage
- Diagnostics such as crashes and performance
$ Information not collected
- Information that identifies you, such as your name or email address (there is no account)
- Location from the device's location services such as GPS (the App does not request location permission)
- Access to contacts, photos, camera or microphone
$ Ads and your ad choice
The App is free. It shows a banner ad at the bottom of the home screen and the menu screens, and may show an interstitial (full-screen) ad when you switch between areas or close a finished race. Screens that play algorithm animations never show ads.
On first launch the App asks: "May we show ads based on your interests (personalized ads)?" The question links to this privacy policy.
- Until you answer (initial state): the ad SDK does not start and no ad is requested.
- "Allow": you see ads, including personalized ads.
- "Don't allow": you still see ads, but they are not personalized (the Pangle SDK is told there is no consent to personalized ads and serves non-personalized ads only).
You can change this choice at any time from "Ad settings" at the bottom of the home screen; the change applies immediately.
On iOS, the App Tracking Transparency (ATT) prompt appears after this choice (whichever you pick). The App's choice and ATT are separate settings.
In regions where the law requires consent, such as the European Economic Area and the United Kingdom, the App asks for consent with the same question and passes your choice to the Pangle SDK.
$ Advertising identifiers and opting out
On both platforms you can stop personalized ads at any time by choosing "Don't allow" under "Ad settings" on the home screen.
On Android, the Pangle SDK uses the advertising ID for ad delivery. You can delete or reset it, or turn off personalized ads, under "Ads" in the device's Settings app (Google's ad settings; depending on the device it is under "Privacy" or "Google").
On iOS, the Pangle SDK can read the IDFA only if you choose "Allow" in the ATT prompt. If you chose "Don't allow" in the App's ad choice, ads are not personalized even if ATT is allowed. If you choose "Ask App Not to Track", you still see ads but the IDFA is not used. You can change ATT at any time under Settings > Privacy & Security > Tracking.
$ Third-party services
- Pangle — ad delivery
$ Retention and deletion
The App's settings (such as your ad choice) are stored only on your device and are all removed when you delete the App. We hold no data tied to you, so there is no data for us to disclose or delete on request.
Requests to access or delete data collected by Pangle can be made to Pangle through the contact given in the Pangle End User Data Privacy Policy.
$ Children's privacy
The App is not directed primarily at children under 13 and does not knowingly collect personal information from them. If a child uses the App, please do so with a parent's consent and consider the device's ad settings.
$ Changes to this policy
This policy may be revised in line with changes in law or in the App. When it changes, this page is updated along with the date above.
$ Contact
Fuji Bit Inc.