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ResearchCalc ("the App") respects your privacy. This policy explains how the App handles information.

Developer Information

• Developer: Cedarlab
• App: ResearchCalc
• Contact: legal@cedarlab.dev

1. Information We Collect

The App itself does not transmit or collect any of the following data to remote servers:

• Calculation history
• Saved memos and bookmarks
• Settings (keypad layout, theme, etc.)
• Conversion presets

All such data is stored only on your device (using iOS local app storage AsyncStorage).

2. Information Handled by Third-Party Services

2.1 Google AdMob (Advertising)

For free users, the App displays banner advertisements via Google AdMob. AdMob may handle the following information for ad delivery:

• Identifier — Advertising identifier (IDFA): only when you grant App Tracking Transparency (ATT) permission
• Usage data — Advertising data: ad-request, response, and impression metadata
• Usage data — Product interaction: in-ad and SDK interaction events (taps, dismissals, view duration)
• Location — Coarse location: country / region inferred from IP address (no GPS access is requested)
• Diagnostics — Crash data: SDK crash reports
• Diagnostics — Performance data: SDK performance metrics (load latency, memory)
• Diagnostics — Other diagnostic data: device type, OS version, and technical SDK diagnostics

If ATT permission is not granted, or if you have purchased the Pro version, IDFA is not used and only contextual (non-personalized) ads are served. At present, only non-personalized ads are requested for all users.

Cross-border transfer: The information above is transmitted to Google LLC in the United States and processed under U.S. data protection frameworks. Please refer to Google's privacy policy below for Google's data handling and security practices.

Withdrawing consent: You can revoke ATT permission at any time via Settings > Privacy & Security > Tracking on iOS. After revocation, only contextual (non-IDFA-based) ads will be served.

Third-party services: Information handled by the third-party services integrated into the App (Google AdMob, Apple StoreKit) is governed by each provider's own privacy policy.

Google's privacy policy: https://policies.google.com/privacy
Ad personalization / opt-out: https://adssettings.google.com/

2.2 Apple StoreKit (In-App Purchases)

Pro unlock purchases are processed via Apple StoreKit. Payment information is handled within Apple's systems; the developer does not have access to payment details.

Apple's privacy policy: https://www.apple.com/legal/privacy/

3. Information the App Itself Does NOT Collect

The App itself does not collect the following (other than the AdMob handling described in Section 2.1):

• Names, email addresses, phone numbers
• GPS location
• Contacts, photos, calendar data
• Account information (no account registration is offered)

4. Children's Privacy

The App is not directed to children under 13. We do not knowingly collect personal information from children under 13.

5. Purpose of Use

The App uses the user-created data listed in Section 1 (calculation history, saved memos and bookmarks, settings, and conversion presets) solely on your device, and only for the purpose of providing the calculation tools intended for life-science researchers. No such data is provided to any third party.

Information handled via Google AdMob (Section 2.1) is used by Google LLC for the purposes of ad delivery, performance measurement, and maintaining the quality of the advertising SDK.

6. Data Storage and Deletion

All app data exists alongside the App on your device. Uninstalling the App will delete all local data associated with the App.

Data handled by Google AdMob (Section 2.1) is held by Google, not by the App. To request deletion or restriction of advertising data associated with your device or Google account, please use Google's ad settings (https://adssettings.google.com/) or your device's iOS reset advertising identifier control. For assistance, you may also contact us at the email in Section 11.

7. Rights of Users in the EEA / UK (GDPR)

The data controller for the App is the developer (Cedarlab), based in Japan. The App integrates Google AdMob for ad delivery in the free tier; Google acts as a separate data controller (or joint controller, depending on configuration) for ad-related processing. Refer to Google's policies for details.

Legal bases for processing via AdMob:

• Consent (GDPR Art. 6(1)(a)) — for processing involving the advertising identifier (IDFA) for personalized or cross-app targeted advertising. This consent is signaled in part via the iOS ATT prompt and, for users in the EEA / UK, by an additional in-app consent flow served by Google's User Messaging Platform (UMP) before any AdMob ad is loaded. You may withdraw at any time (see "Withdrawing consent" in Section 2.1, and re-trigger the UMP form from in-app settings where available).
• Legitimate interest (GDPR Art. 6(1)(f)) — for non-tracking ad delivery (contextual ads), basic ad-frequency capping, and SDK diagnostics necessary to operate the free tier sustainably.

Where applicable under the GDPR or UK GDPR, you have the right to access, rectify, erase, restrict, or object to the processing of your personal data, and the right to withdraw consent at any time. To exercise these rights, please contact us via the email address in Section 11.

Personal data may be transferred outside the EEA / UK to the United States by Google AdMob, processed under safeguards described in Google's policies.

8. Rights of California Residents (CCPA / CPRA)

The developer does not sell personal information for monetary consideration. However, the App's free tier integrates Google AdMob, which may share information (such as IDFA when ATT is granted, and approximate location) with third parties for cross-context behavioral advertising purposes as defined by the CPRA. You can opt out of cross-context advertising at any time by:

• Declining or revoking ATT permission via iOS Settings (see Section 2.1)
• Adjusting Google ad settings: https://adssettings.google.com/
• Upgrading to Pro, which removes ads entirely

California residents may also exercise other applicable rights (right to know, right to delete, right to correct) by contacting us via the email address in Section 11.

9. Changes to This Privacy Policy

If this policy is updated, the "Last updated" date on this page will be changed. Material changes may also be announced within the App.

10. Governing Law

This Privacy Policy is governed by the laws of Japan.

11. Contact

For questions or requests regarding this policy, please contact legal@cedarlab.dev.