Privacy Policy for Shopping Lister

Effective Date: January 21, 2026

Sigmundstad Digital Corporate Policy: This application is operated by Sigmundstad Digital. This document details the specific data handling for this app and complements our Master Privacy Policy.

1. Data Collection and Usage

Shopping Lister is built to respect user privacy while providing a high-quality experience. We collect data based on how you interact with our services:

User Content: Grocery lists and categories are stored locally or synced to the cloud if the synchronization feature is enabled.
Optional Contact Info: Your email address is only collected if you choose to create a registered account for cloud backup.
App Performance & Analytics: We collect anonymized usage events and diagnostic reports to ensure the app is stable and to improve our features.

2. Anonymous vs. Account Synchronization

We provide multiple ways to manage your data privacy:

Anonymous Peer Sync: You can synchronize lists with other devices without providing an email address. We use a secure, temporary anonymous token to link devices.
Account-Based Sync: Persistent cloud storage and backup using your email address via Google Firebase.

3. Advertising (Google AdMob)

This app displays advertisements provided by Google AdMob. To deliver and manage these ads, Google collects and processes certain identifiers, including:

Advertising ID: A unique, resettable ID used for ad delivery, frequency capping, and preventing fraud.
Interaction Data: Information about how you interact with ads within the app.

You can manage your ad personalization settings at any time within your Android device settings.

4. Third-Party Service Providers

To provide, monitor, and improve our services, we integrate with the following Google platforms:

Provider	Purpose	Data Category	Encrypted
Google Firebase	Sync & Storage	User Content, User IDs	Yes
Google Crashlytics	App Stability	Crash Logs, Diagnostics	Yes
Google Analytics	App Improvement	Anonymized Usage Info	Yes
Google AdMob	Ad Monetization	Advertising ID	Yes

5. Data Encryption and Security

All data is encrypted in transit. We utilize industry-standard HTTPS/TLS protocols to protect your information during transmission between the app and our secure service providers.

6. Children's Privacy

This app is not directed at children under 13. We do not knowingly collect personal data from children. All third-party services are configured to comply with general audience standards and Google Play's Families Policy where applicable.

7. Data Deletion and Control

You have full control over your data. You can delete your lists, your account, or any associated data at any time via the app settings. For formal data deletion requests, please contact us at:
support@shopping-lister.com