Quad9 Connect
Quad9 Connect is a free, open-source privacy app for Android. Android application for Quad9 recursive DNS cybersecurity and privacy services. It has 129 GitHub stars and is released under the AGPL-3.0-or-later license, and you can install it from F-Droid.
- Android
- Java
- Privacy, ad-blocking & VPN
- Actively maintained
About Quad9 Connect
Quad9 Connect is an Android and ChromeOS app that sends your DNS queries to Quad9's secure, private, open recursive DNS service. Quad9 Connect adds additional functionality and features compared to using Android's Private DNS feature to utilize encrypted DNS or configured Quad9 in Chrome on ChromeOS. The application creates a split VPN tunnel with Android API "VpnService" to configure an alternate DNS server on Android and ChromeOS. ## Features - DNS over TLS or DNS over UDP - DNS Query Log - Trusted Networks - Blocked Query Notifications - Local Domains - Excluded Applications
Privacy and F-Droid
F-Droid builds Quad9 Connect from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
- Depends on the developer's own network service
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What is Quad9 Connect?
Quad9 Connect is a free, open-source privacy app for Android. Android application for Quad9 recursive DNS cybersecurity and privacy services. It has 129 GitHub stars and is released under the AGPL-3.0-or-later license, and you can install it from F-Droid.
Is Quad9 Connect free and open source?
Yes. Quad9 Connect's source code is public on GitHub under the AGPL-3.0-or-later license, which is OSI-approved or FSF-free. F-Droid flags these anti-features on its latest build: depends on the developer's own network service.
How do I install Quad9 Connect?
You can install Quad9 Connect from F-Droid (package com.quad9.aegis); the links are on this page. Its GitHub repository also publishes releases (latest: 1.2.4).
Is Quad9 Connect still maintained?
The repository's most recent commit was on Oct 5, 2026. Its F-Droid listing was last updated on Jul 28, 2026. appsgit only lists apps whose repository had a commit in the last six months.