Privacy Policy

UsefulApp - Visual Effects for Android

Last updated: January 2026

The Short Version

UsefulApp does not collect, store, transmit, or share any personal data whatsoever. Everything happens locally on your device. That's it. That's the policy.

What We DON'T Do

Data We Don't Collect

• Personal information (name, email, phone, etc.)
• Device identifiers or fingerprints
• Usage statistics or analytics
• Location data
• Browsing history or app usage patterns
• Contacts, photos, or any other personal files
• Crash reports or diagnostics
• Advertising identifiers

How the App Works

UsefulApp displays visual effects (sigils, fireworks, lightning, etc.) as a live wallpaper on your device. All processing happens locally using your device's GPU. The app:

• Runs entirely on your device
• Does not require an internet connection
• Stores your preferences locally on your device only
• Never transmits any data to external servers

Permissions Explained

The app may request certain permissions to function properly. Here's what they're used for:

• Set Wallpaper: Required to display effects as your live wallpaper

These permissions are used solely for the app's core functionality. No data is collected or transmitted through these permissions.

Third-Party Services

UsefulApp does not integrate any third-party services, SDKs, or libraries that collect user data. There are:

• No advertising networks
• No analytics platforms (Google Analytics, Firebase, etc.)
• No crash reporting services
• No social media integrations
• No cloud storage services

Children's Privacy

Since we don't collect any data from anyone, this naturally extends to children under 13 (or any applicable age in your jurisdiction). The app is safe for users of all ages.

Changes to This Policy

If we ever change this privacy policy, we will update this page. However, our commitment to not collecting your data will never change. That's a promise.