This page is the app-specific privacy policy for the mobile app Ultra Simple Expense Log. Doui Lab ("we") sets out the following policy regarding the handling of user-related information in this app.

1. Information we may store or process

The app stores spending records, categories, payment methods, notes, language settings, currency settings, and closing day settings on the device. Information required for premium entitlement checks, ad delivery, and purchase restoration may also be processed through third-party services.

2. Purpose of use

The stored or processed information is used to provide expense recording features, keep settings, show analytics, support import / export, respond to inquiries, prevent misuse, display ads, verify premium status, and improve the app.

3. Local storage

The core household expense data is stored in local device storage. Unless the user explicitly exports or restores data, the app is not designed around syncing bookkeeping data to an external server.

4. Third-party services

This app may use third-party services such as Google AdMob, RevenueCat, Apple App Store, and Google Play. These services may process information according to their own privacy policies.

5. Personal information

The app does not require direct entry of name, address, phone number, or similar data. However, device identifiers or purchase-state-related information may be processed by third-party services for billing and advertising.

6. Advertising

Ads may be displayed via AdMob during free use. Please review your device settings and Google's policies for the handling of advertising identifiers and related data. Premium use is designed to remove ads.

7. Stopping use and data deletion

If you want to stop using the app, please uninstall it. Device-local data will be removed from the device side. You are responsible for any exported backup files you keep. For contact, please review the support page.

8. Revisions

This policy may be updated when necessary. If there is a material change, it will be announced on this page.

9. Contact

Please review the support page.