Onion Browser

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Enhance your web privacy

Onion Browser is a free 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.

• Onion Browser is recommended by Tactical Technology Collective and ProPublica’s Guide to Safer Communication.
• Featured in Ars Technica, The New York Times, Salon, TechCrunch, Boing Boing, Gizmodo, Lifehacker, The Guardian, Cult of Mac, and others.
• Read about Onion Browser on the official Tor Project blog.

Latest news:

• June 2017, update: Onion Browser 1.7.7 updated the built-in bridge list and updated Tor to 0.3.0.7. Onion Browser now also gives you a way to financially support development of the app with an in-app purchase. Full details on this update and all prior updates can be found in the release history. Users are encouraged to update via App Store.

  Other updates in the 1.7 series include: Support for Tor connections on IPv6-only networks (fixing connectivity for customers of T-Mobile US and a few other mobile network providers). Tor.framework integration. Bridge configuration was updated so that app updates also properly update the built-in bridge list so you don't get stuck with a non-working connection.

• 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.

  You can read coverage about the price change in Ars Technica, and read about the State of iOS Tor on the official Tor Project blog.

Download

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.

Donate To Support Onion Browser

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

• Back the project on Patreon. Users who back the project at the $5 tier can (optionally) appear in the app's credits as a way of thanks. Users who back the project at the $10 tier can receive an invite to test upcoming versions of Onion Browser.
• Send a one-off payment in the app (as of v1.7.6) — see "Help Fund Onion Browser" in the main menu.
• Send a one-off payment using PayPal, using the box to the "Support Onion Browser" to the right.
• Sending Bitcoin: You can either use CoinBase or send manually to this address: 131KjAPyyqsykusioGZBiMdogi2RigGjry.
  

If you'd like donate in amounts other than the pre-set amounts, if you'd like an anonymous Bitcoin address not involving a third party, or if you would like to support the project via another payment method, please get in touch.

Features & Benefits

• Internet access is tunneled through the Tor network[1][2]
  • Websites do not see your real IP address.
  • ISPs and insecure wireless networks cannot see your browsing.
  • Access websites, even behind some types of internet filters and censors.
  • View .onion websites: the "dark net" of hidden sites only accessible using Tor.
• Fight online tracking: use a new IP address and clear your cookies/history/cache by pressing one button.
• Block third party cookies or all cookies.
• Ability to change cookie storage policy (Allow All / Block Third Party / Block All)
• Disable scripts and multimedia content that can be used to track you.
• Can send the "Do Not Track" HTTP header (DNT: 1) to websites.

Bugs, Caveats, Side Notes

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.

• Disclaimer: Onion Browser only tunnels traffic within the Onion Browser app. You are still using a smartphone, and in extremely sensitive circumstances you should be aware that iOS or your cellular provider may continue to leak non-Onion Browser traffic and other information.
• Video note: Websites using HTML5 <video> tags may leak <video>-related DNS queries and data transfer outside of Tor. This includes YouTube, Vimeo, and any website using iOS-compatible HTML5 video. This is due to behavior of the embedded QuickTime player and a comprehensive workaround has not yet been developed.
• JavaScript blocking: The "Active Content Blocking" feature is experimental. If ACB is turned off, JavaScript techniques can identify your device even if User-Agent Spoofing is enabled.
• Geolocation blocking: Websites may use the HTML5 Geolocation API unless the "Active Content Blocking" feature is set to "Block All". Users should remain vigilant for any pop-ups asking for permission to access location data.
• Common Sense: If you log into websites in Onion Browser that you normally log into outside of the Tor network, they will a) still know who you are, and b) know that you use Tor. In certain circumstances (i.e. political dissent in repressive nations), this may be incriminating information in itself.

Onion Browser is copyright © 2012-2017 Mike Tigas, all rights reserved. "Onion Browser" and the Onion Browser logo are trademarks of Mike Tigas. Onion Browser is distributed under MIT License and the source code is freely available.

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.

Onion Browser is provided as-is and use of the app is at your own risk. Any use of the app is under the standard iOS App Store End User License Agreement, the Onion Browser license and any third-party licenses (see credits file included in the app). Please remember: sensitive data does not always belong on a mobile device.

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.

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 legal obligations.