Privacy Policy for Zhoplist

Introduction

Zhoplist is a simple shopping list app that helps you organize your purchases. We care about your privacy and this policy explains how we handle your information.

Information We Collect

Shopping Lists Data: We store your shopping list items, including titles, descriptions, categories, priorities, and completion status on our servers to enable synchronization across devices.

Session Identifiers: We generate and store unique device IDs (automatically generated) or custom list codes (that you create) to keep your shopping lists separate from other users. These identifiers do not contain personal information.

Timestamps: We record when items are created and modified for proper synchronization.

Local Device Storage: We store certain data locally on your device using browser storage (localStorage), including:

• Your device ID and list codes
• Custom categories and products you create
• Product selection history (to improve autocomplete suggestions)
• App preferences and settings

Usage Analytics

We collect anonymous usage statistics to improve the app, including:

• Operation types (creating, updating, deleting items)
• List types used (personal, shared)
• General data sizes for performance optimization

This analytics data is aggregated and does not identify individual users. We use Cloudflare Analytics Engine to process this data.

How We Use Information

We use your data solely to provide the shopping list functionality, including:

• Storing and synchronizing your shopping lists across devices
• Enabling shared shopping lists through custom list codes
• Providing real-time synchronization via WebSocket connections
• Improving autocomplete suggestions based on your product selections
• Maintaining data integrity and preventing data loss

Sharing of Information

We do not sell or share your shopping list data with third parties for marketing purposes. Your data is only accessible to:

• You, through your device ID or custom list code
• Others you explicitly share your list code with

Infrastructure and Data Processing

Your data is processed and stored using the following services:

• Cloudflare Workers: Our backend API runs on Cloudflare's global network
• Cloudflare D1: Your shopping list data is stored in Cloudflare's database service
• Cloudflare Analytics Engine: Anonymous usage statistics are processed here

Cloudflare is a reputable infrastructure provider with strong security and privacy practices. For more information, see Cloudflare's Privacy Policy.

Security

We implement security measures to protect your data, including:

• Secure HTTPS connections for all data transfers
• Session-based access control
• Input validation and sanitization
• Rate limiting to prevent abuse

Your shopping lists are only accessible through your unique device ID or list code.

Data Retention

Your shopping list data is retained on our servers to provide continuous service. We may periodically clean up old, inactive data to maintain system performance. You can delete individual items or your entire shopping list at any time through the app.

Your Rights

You have the right to:

• Access your shopping list data at any time
• Delete individual items or your entire shopping list
• Create custom list codes for sharing lists with others
• Clear local device storage through your browser settings
• Generate a new device ID to start fresh

Children's Privacy

Zhoplist does not knowingly collect information from children under 13. The app is designed for general audiences and does not require any personal information to use.

Changes to this Policy

We may update this privacy policy from time to time. Any changes will be posted on this page with an updated revision date.