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Onion Browser

An open-source, privacy-enhancing web browser for iOS.

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Enhance your web privacy

Onion Browser is a free and open-source web browser for iPhone and iPad that encrypts and tunnels web traffic through the Tor network, with extra features to help you browse the internet privately. See more features & benefits.

Latest version:

Onion Browser is a free app. If you'd like to support continuing development of Onion Browser and other Tor iOS projects, please consider sending a tip or other financial contribution. Even a couple dollars helps!


Available on the App Store

This app available for free in the Apple App Store. Click here to download.

Note: Onion Browser is not available in China due local regulations preventing the distribution of Tor apps in the App Store.

Copies of Onion Browser downloaded outside the App Store — via app directories like Cydia or other "jailbreak" app directories — are not created by the developer of Onion Browser. These copies may have modifications added by the packager, which may interfere with your privacy or security, or they may secretly contain malware. We cannot provide support for copies of Onion Browser acquired through these channels.

Source Code


Onion Browser is open source software so that others may audit/inspect the code and help contribute to the project. You may freely access the source code on GitHub; see license for terms of use and disclaimers.

Donate To Support Onion Browser

Onion Browser is a free app! You can support continuing development of Onion Browser in a few ways:

Features & Benefits

Security Advisories, Known Bugs, and Etc. (Updated 2019-12-17)

See the release history for a log of Onion Browser release notes, including previous security issues and results of previous security audits. See the Github project for a current list of known issues.

Using Onion Browser does not guarantee security or privacy by itself. It simply provides a set of features that may enhance privacy and anonymity while browsing the web. To stay anonymous, you should also consider your behavior as you use Onion Browser or other privacy-protecting software.

Copyright & Legal

Onion Browser is copyright © 2012-2019 Tigas Ventures, LLC. All rights reserved. "Onion Browser" and the Onion Browser logo are trademarks of Tigas Ventures, LLC. Onion Browser is distributed under the Endless / Onion Browser License (OBL).

Onion Browser is developed by or officially endorsed by the Tor Project. Onion Browser carries no guarantee from The Tor Project about quality, suitability or anything else. "Tor" is a registered trademark of The Tor Project, Inc.

This software uses strong cryptography and may it fall under certain export/import and/or use restrictions in some other parts of the world. See for more information.

Any use of the app is subject to the Onion Browser License (see above), any applicable Apple Terms of Use or End User License Agreement, and any other applicable third-party licenses (as included in the app credits). Onion Browser is provided as-is and use of the app is at your own risk; see the License for full disclaimer of warranty.

If you are a developer and plan on redistributing this app in source or binary form, please see read the LICENSE file for full license details and your legal obligations. Any use other than those listed in the LICENSE file are only allowed with written permission.

Privacy Policy & Privacy Notices

Onion Browser does not directly collect any data on user activity. Onion Browser does not process any user data. Other than what is built into iOS, Onion Browser does not utilize any third party analytics.

Information on iOS data collection (App Store account info, opt-in analytics, etc), and its privacy policy (and full legal compliance information), can be found here:

iOS analytics data collection is opt-in (Settings->Privacy->Analytics in iOS) and is aggregated and anonymized using differential privacy techniques to make it difficult or impossible to extract an individual user’s information from the aggregated data.

Apple only makes this data available in aggregate and the Onion Browser developers do not have access to an individual user’s information. For examples of the aggregate data made available, see: