GO

Privacy Policy

Zutu

This English version is an automated translation provided for reference only. The Japanese version is authoritative; in the event of any discrepancy, the Japanese version shall prevail.

Go Studio (the "Studio") establishes the following Privacy Policy (the "Policy") regarding the handling of user information in the applications and web services provided by the Studio (the "Services").

The Japanese version of this policy is authoritative. This English version is an automated translation provided for reference only. In the event of any discrepancy, the Japanese version shall prevail.

1. Information We Collect

We may collect the following user information in the Services:

  • Service Usage Information: Log information, access dates and times, operation history, and search queries.
  • Device Information: Device type, OS, language settings, and IP address.
  • Identifiers: Vendor identifiers (IDFV) and advertising identifiers (IDFA *only when permitted via the App Tracking Transparency framework).
  • Location Information: Current location information to the extent necessary for specific features (*only when permitted in advance based on individual app settings).

* Input data specific to individual apps (e.g., health information) is defined in the individual privacy policy of each app.

2. Purpose of Use

The Studio uses the collected information for the following purposes:

  • Provision and Operation of Services: To provide the basic functions of the Services and for user support.
  • Analysis and R&D: To analyze usage, statistically process behavioral logs, and use them to develop new features and improve service quality.
  • Optimization and Marketing: To provide information tailored to users' interests and needs, make recommendations, and optimize the delivery and display of advertisements. This includes linking usage across multiple Studio apps (utilizing IDFV, etc.).
  • Creation of Statistical Data: To create statistical data processed into a format that cannot identify individuals, for our own use or provision to third parties.

2.5 Advertising Identifiers and Consent for Use

About ATT (App Tracking Transparency)

On Apple devices running iOS 14.5 or later, explicit user consent is required to obtain the advertising identifier (IDFA). If the Services use IDFA for analysis or marketing purposes, a dialog asking "Allow tracking?" will be displayed upon initial launch. Even if you choose "Ask App Not to Track," you will still have full access to all app features.

About Google Ads and AdMob

Apps that display advertisements may use the Google Mobile Ads SDK (GMA SDK) and share the user's ad view history and device information with Google. For details, please refer to the Google Privacy Policy.

3. Provision to Third Parties

Except as required by law, the Studio will not provide personal information to third parties without the user's consent. However, within the scope of the purposes of use defined in Article 2, we may provide non-personally identifiable statistical information to partner companies, etc.

4. Use of Third-Party Services

The Services may use third-party services such as the following. Please refer to the respective pages for the privacy policies of each service.

  • Apple App Store (Apple Inc.)
  • Google Play (Google LLC)
  • Firebase Analytics / Crashlytics (Google LLC)
  • Google AdMob (Google LLC) — When ads are displayed

5. Data Security Management

The Studio will take necessary and appropriate measures to prevent the leakage, loss, or damage of collected information, and for other security management purposes. Furthermore, the collected information will not be retained beyond the period necessary to achieve the purposes of use.

6. Disclosure, Correction, Deletion, and Suspension of Use

Users have the right to request the disclosure, correction, addition, deletion, suspension of use, erasure, or suspension of third-party provision of their personal information held by the Studio, in accordance with the Act on the Protection of Personal Information of Japan. If you wish to make such a request, please contact us using the contact page below. After verifying your identity, we will respond within a reasonable period and within the scope required by law.

7. Children's Privacy

The Services are not directed to individuals under the age of 13. If we discover that we have collected personal information from an individual under 13, we will promptly delete that information. If you believe your child has provided us with personal information, please contact us at the contact page below.

8. Revision of this Policy

The Studio will revise this Policy as necessary. If there are material changes, we will notify you within the Services or on the Studio's website. The revised Policy shall become effective upon being posted on this page.

Zutu — App-Specific Policy

Data Collected by This App

Zutu is a barometric pressure forecast and symptom tracking app for people sensitive to atmospheric pressure changes, such as those prone to headaches. In addition to the information described in the common policy, this App collects the following: ■ Location (optional) Used to retrieve barometric pressure forecasts and weather information for the selected area. Location data is used solely for requests to Apple WeatherKit (processed by Apple Inc.) and the Japan Meteorological Agency's public API (coordinates only). It is never transmitted to, stored by, or linked to a user identifier on Go Studio's servers. All features of the App are available without granting location access by manually selecting a municipality. ■ Symptom Logs (Sensitive Personal Information · Stored On-Device) Symptom logs (including headache severity, medication use, and notes) may constitute sensitive personal information under Japan's Act on the Protection of Personal Information. They are collected based on user consent and stored solely on the device (SwiftData). They are never transmitted to or stored on Go Studio's servers. ■ App Settings Settings such as theme (light/dark), pressure units, temperature units, notification preferences, onboarding completion status, and selected area are stored in the device's UserDefaults. They are not transmitted externally.

Data Sent to External Services

The App uses the following external services. · Apple WeatherKit (Apple Inc.): The coordinates of the selected area are sent to receive sea-level pressure data. Apple's privacy policy applies. · Japan Meteorological Agency Public API (Japanese Government): The regional code for the selected area is sent to receive weekly weather forecasts. · Apple In-App Purchase (Apple Inc.): All subscription purchases and management are processed entirely by Apple. Go Studio does not have access to billing information. · Firebase Analytics (Google LLC): App usage data (such as screen transitions and feature usage frequency) is collected for behavior analysis. The device's Vendor Identifier (IDFV) is used; the Advertising Identifier (IDFA) is not used. Collected data is not used to identify individuals. Google's privacy policy applies.

Advertising Identifier (IDFA) and Tracking

This App does not engage in advertising or cross-site tracking (IDFA collection). No banner or popup advertisements are displayed in any plan, including the free tier. As a result, the App Tracking Transparency (ATT) consent dialog is not shown. The App uses Firebase Analytics for the purpose of improving the app experience. Firebase Analytics uses the Vendor Identifier (IDFV) but does not use the Advertising Identifier (IDFA).

Health Data and Apple HealthKit

This App does not integrate with Apple HealthKit. Symptom logs entered by the user are not written to HealthKit and are stored only in the device's SwiftData.

Healthcare Disclaimer

The barometric pressure information, risk assessments, and symptom logging features provided by this App are intended to support health awareness and weather monitoring. This App is not a medical device and is not intended to diagnose, treat, cure, or prevent any medical condition. If you have health concerns or persistent symptoms, please consult a qualified healthcare professional.

Contact

For inquiries about this policy or requests to disclose personal information, please contact us via our contact page.

Last updated: 2026年9月5日