Privacy Policy

Last updated: February 2026

Introduction

Acutis Firewall ("we", "our", or "the app") is committed to protecting your privacy. This Privacy Policy explains how we handle information when you use our Android application.

Information We Do NOT Collect

Acutis Firewall is designed with privacy as a core principle. We do NOT collect, store, or transmit:

• Personal information (name, email, phone number)
• Browsing history or DNS query logs
• Device identifiers or advertising IDs
• Location data
• Usage analytics or telemetry
• Any data to external servers

How the App Works

Acutis Firewall uses Android's VPN Service API to create a local VPN tunnel on your device. This allows the app to:

• Intercept DNS queries locally on your device
• Block requests to domains on your configured blocklists
• Forward allowed DNS queries to Cloudflare's public DNS (1.1.1.1)

Important: All filtering happens entirely on your device. No DNS queries, browsing data, or personal information is sent to our servers because we do not operate any servers.

Data Stored on Your Device

The following data is stored locally on your device only:

• Blocklists: Domain lists for content filtering, stored in a local database
• Time Rules: Your configured schedules and daily limits
• PIN: If enabled, your 4-digit PIN is stored using Android's EncryptedSharedPreferences
• Settings: Your app preferences (auto-start, enabled categories)

This data never leaves your device and is deleted when you uninstall the app.

Third-Party Services

The app forwards allowed DNS queries to Cloudflare's public DNS service (1.1.1.1). Cloudflare's privacy policy applies to DNS resolution. We chose Cloudflare for their commitment to privacy - they do not sell DNS data and purge logs within 24 hours.

For more information, see Cloudflare's Privacy Policy.

Blocklist Sources

The app downloads blocklists from the following open-source projects:

• StevenBlack/hosts - for adult content blocking
• URLhaus - for malware and phishing protection

These downloads only retrieve domain lists and do not transmit any personal information.

VPN Permission

The app requires VPN permission to function. This permission is used solely to filter DNS queries locally. The app does NOT:

• Route your internet traffic through external servers
• Monitor, log, or store your browsing activity
• Access the content of your communications
• Share any data with third parties

Children's Privacy

Acutis Firewall is designed to help parents protect children online. The app does not collect any information from children or any other users.

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.

Contact Us

If you have any questions about this Privacy Policy, please contact us at:

Email: acutis@castillo.sh

Your Rights

Since we do not collect any personal data, there is no personal data to access, modify, or delete. All app data is stored locally on your device and can be removed by uninstalling the app or clearing the app's data in Android Settings.