Last Updated: 2026

1. Introduction

Thank you for using ZucuWords. This Privacy Policy explains how we collect, use, and safeguard your information when you use our mobile application.

We believe in privacy by design. ZucuWords does not require you to create an account, log in, or provide your name or email address to use the app.

2. Information We Collect

A. Personal Data

We do not collect personally identifiable information (PII) such as your name, email address, phone number, or physical address.

B. Usage Data (Analytics)

We use Google Firebase Analytics and Firebase Crashlytics to help us improve the app. These services collect anonymized data about how the app is used, including:

• Device type and operating system (e.g., iPhone 15, iOS 18).
• App stability (crash reports).
• Interaction events (e.g., "quiz_completed", "favorite_toggled", or "level_selected").

This data is anonymized and cannot be used to identify you personally. We use this data solely to understand which features are popular and to fix bugs.

We do not see, trade, or rent your usage data to third parties for advertising purposes

C. Local Data (Stored on Your Device)

Some data is stored locally on your device using Apple’s UserDefaults system. This includes:

• Your "Favorites" list.
• Your daily streak counter.
• Your selected proficiency level (A1-C2).
• Your onboarding status.