Privacy Policy

1. Introduction

HomeNet Navi ("this app") is an iOS "income threshold" simulator app supporting the 2026 system.

This Privacy Policy explains the types of information handled when using this app, the purposes of use, how it is stored, and your rights.

This app displays no advertisements and does not sell your information to third parties.

Income, deduction, and other information you enter is processed only on-device and is never transmitted to the developer's server.

2. Information We Handle

2-1.

Information you enter • Head of household's and spouse's annual income (salary/business income) • Number and age category of dependents • Various income deductions (medical expenses, social insurance premiums, small business mutual aid, etc.

) • Resident tax municipality classification (Premium feature) • Names/notes of saved scenarios 2-2.

Information automatically collected • First install date/launch count of the app (for understanding feature usage, on-device only) • Subscription purchase status (determined by Apple StoreKit) 2-3.

Information not collected • Personally identifiable information such as name, address, phone number, email address • GPS location data • Contacts/address book • Advertising identifier (IDFA) • Biometric data • Browsing history / usage of other apps • Data synced to the cloud (this app performs no server transmission)

3. Purpose of Use of Information

The information handled is used only for the following purposes.

• Calculating and presenting income tax, resident tax, and social insurance premiums based on the 2026 system, and displaying take-home pay • Household-based scenario comparison and saving • Local notifications when approaching an "income threshold" • Determining subscription application (via StoreKit)

4. Where Data Is Stored

Your data is stored in the following locations.

• On your device only: entered values and saved scenarios are stored in UserDefaults and FileManager (on-device local storage).

• No server transmission: this app has no proprietary backend server.

There is no transmission to Firebase or any proprietary API whatsoever.

• iCloud / CloudKit: since this app provides no family sharing or cross-device sync, it does not use CloudKit.

Whether this app's data is included in an iCloud backup follows Apple's device backup specifications.

No data is ever transmitted to the developer's server.

This app's PrivacyInfo.

xcprivacy declares no tracking (NSPrivacyTracking), and it performs no third-party tracking.

5. Third-Party Services

The third-party services used by this app are as follows.

All are services provided by Apple Inc.

Service | Provider | Purpose / StoreKit / App Store | Apple Inc.

| Subscription purchase processing / UserNotifications | Apple Inc.

| Local notifications when approaching a "threshold" (on-device processing) This app provides links to external system pages (National Tax Agency, Japan Pension Service, etc.

), but behavior on those linked sites is governed by each site's own privacy policy.

Please refer to apple.

com/jp/legal/privacy for Apple's privacy policy.

6. Data Retention Period

Entered values and saved scenarios are retained on-device until this app is deleted from your device. Deleting the app deletes all local data (except when included in an iCloud backup).

7. Your Rights

Deletion of data You can delete each scenario from "Settings" within the app.

Deleting the app itself deletes all local data on the device.

Rights under GDPR (for EU residents) Residents of the EU have the right to access, correct, delete, restrict processing of, and port their personal data.

Since this app does not obtain personally identifiable data, this right generally does not apply, but if you have questions, please contact us using the information below.

Rights under the Act on the Protection of Personal Information (for residents of Japan) For requests regarding disclosure, correction, or discontinuation of use of personal information, please contact us using the information below.

8. Children's Privacy

This app is intended for homemakers/homekeepers aged 13 and older and dual-income households. We do not intentionally collect personal information from children under 13.

9. Regarding the Handling of Calculation Results

The take-home pay and tax amounts presented by this app are simulation results based on the publicly announced 2026 system, and are not an official tax determination by a tax accountant or labor and social security attorney.

Please always check with a public institution or professional for actual tax filing, year-end tax adjustment, or social insurance eligibility determination.

10. Contact Us

For questions about this Privacy Policy or requests regarding personal information, please contact us below.

11. Changes to This Policy

This Privacy Policy may be revised as necessary. Material changes will be announced via in-app notification or posting on this page.