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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.
Current security advisories (last updated 2019-06-18):
OCSP leak: Visiting EV "Green Bar" HTTPS sites may leak information that can be used to reveal the domain name of the website you are visiting. This is handled within iOS and cannot be changed by Onion Browser. There is no known workaround. A detailed report can be found here.
April 2019: Onion Browser 2.2.0 upgraded Tor to 0.3.5.8, greatly improves reliability when the app comes back from background, and contains more fixes and UI tweaks. Localizations are now available in Turkish, and localizations for most languages have been updated.
September 9, 2018: An update on Patreon about the current state of Onion Browser.
December 2016: New Price! Onion Browser is now free. Read more about it here. If you'd like to support continuing development of Onion Browser and other Tor iOS projects, please consider backing the project on Patreon or donate via one of the other options.
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.
Onion Browser is a free app! You can support continuing development of Onion Browser in a few ways:
Want to financially support the project another way? Want to use another cryptocurrency, or send to a non-public address? Please get in touch.
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 inherently guarantee security or privacy. It simply provides a set of features that may enhance privacy and anonymity while browsing the web. For more information: The Tor Project maintains a small section about staying anonymous over Tor, as do several threads on Reddit and other messageboard sites.
Onion Browser is copyright © 2012-2018 Tigas Ventures, LLC. All rights reserved. "Onion Browser" and the Onion Browser logo are trademarks of Tigas Ventures, LLC. Onion Browser 1.X is distributed under terms of the Mozilla Public License 2.0 (MPL); Onion Browser 2.X is distributed under the Endless / Onion Browser License (OBL).
Onion Browser is not affiliated with nor 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. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See http://www.wassenaar.org for more information.
Onion Browser does not directly collect any data on user activity. Other than what is built into iOS, Onion Browser does not utilize any third party analytics.
In particular, 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. https://images.apple.com/privacy/docs/Differential_Privacy_Overview.pdf
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: https://developer.apple.com/app-store/app-analytics/