Android Apps for Privacy and Security

Open source apps.


  • CopperheadOS

    Free Android Website

    A hardened open-source operating system based on Android with PaX, OpenBSD malloc and much other privacy/security features.

     

    CopperheadOS icon
  • Haven

    Free Android Website

    Haven uses an Android app and on-device sensors to protect personal spaces and possessions privately.

     

    Haven icon
  • FreeOTP

    Free Android iPhone Android Tablet iPad Website

    Open source implementation of the two-factor authentication HOTP and TOTP schemes.

     

    FreeOTP icon
  • Android IMSI-Catcher Detector

    Free Android Website

    Detect attacks of fake base stations such as IMSI-Catcher and StingRay on your GSM/UMTS network. Look for silent SMS used by police and intelligence services.

     

    Android IMSI-Catcher Detector icon
  • OpenKeychain

    Free Android Android Tablet K-9 Mail Website

    OpenKeychain helps you communicate more privately and securely. It uses high-quality modern encryption to ensure that your messages can be read only by the people you send them to, others can send you messages that only you can read, and these messages can be digitally signed so the people getting them are sure who sent them. OpenKeychain is based on the well established OpenPGP standard making encryption compatible across your devices and operating systems.

    Modern encryption is based on digital “keys”. OpenKeychain stores and manages your keys, and those of the people you communicate with, on your Android. It also helps you find others’ keys online, and interchange keys by touching devices. But its most frequent use is in using those keys to encrypt and decrypt messages.

     

    OpenKeychain icon
  • AFWall+

    Free Android Website

    AFWall+ is an improved version of Small DroidWall iconDroidWall (front-end application for the powerful iptables Linux firewall). It allows you to restrict which applications are permitted to access your data networks (2G/3G and/or Wi-Fi and while in roaming).
    Note: If DroidWall/Avast doesn't work on your device, AFWall+ also will not work.

     

    AFWall+ icon
  • AdAway

    Free Android Website

    An ad blocker that uses the hosts file. The hosts file contains a list of mappings between hostnames and IP addresses. When an app requests an ad, that request is directed to 127.0.0.1 which does nothing. There are options to run a web server to respond to blocked hostnames and to direct requests to the IP address of your choosing. You can automatically download hosts files from the app but it is possible to use your own and to add certain sites to the white- and black-lists.

     

    AdAway icon
  • Open Camera

    Free Android Android Tablet Website

    Open Camera is an Open Source Camera app for Android phones and tablets. Features:

    Option to auto-stabilise so your pictures are perfectly level no matter what.
    Expose your camera's functionality: support for focus modes, scene modes, color effects, white balance, ISO, exposure compensation/lock, face detection, torch.
    Video recording (supports all available resolutions including HD).
    Handy remote controls: timer (with optional voice countdown), auto-repeat mode (with configurable delay).
    Option to take photo remotely by making a noise (e.g., voice, whistle), or by voice command "cheese".
    Configurable volume keys.
    Optimise GUI for left or right-handed users.
    Zoom via multi-touch gesture and single-touch control.
    Ability to lock orientation to portrait or landscape for photo or video.
    Choice of save folder (including support for Lollipop's Storage Access Framework).
    Disable shutter sound.
    Overlay a choice of grids (including "rule of thirds") and crop guides.
    Optional GPS location tagging (geotagging) of photos and videos; for photos this includes compass direction (GPSImgDirection, GPSImgDirectionRef).
    Apply a date and timestamp, location coordinates, and custom text to photos; store date/time and location as video subtitles (.SRT).
    Yes you can take a selfie (also known as front camera), includes support for "screen flash".
    Support for (some) external microphones.
    Widget to automatically take a photo after launching.
    Support for Android 5 Camera2 API: manual focus distance; manual ISO; manual exposure time; RAW (DNG) files.
    Support for HDR and Exposure Bracketing (Camera2 only).
    Dynamic range optimisation mode for better quality photos.
    Small file size.
    Completely free, and no ads in the app. Open Source.

     

    Open Camera icon
  • Silence.im

    Free Android Kindle Fire Website

    Protect your communication in transit and on your phone. Silence (formerly SMSSecure) is a full replacement for the default text messaging application: all messages are encrypted locally and messages to other Silence users are encrypted over the air.

     

    Silence.im icon
  • Orbot

    Free Android Android Tablet Website

    Orbot is an open source Small Tor iconTor Proxy App for Small Android iconAndroid Phones. If the phone is rooted, it can even transparently route all phone internet traffic through the Small Tor iconTor network. Should be installed alongside Orweb, an open source Tor web browser that will automatically use Orbot.

     

    Orbot icon
  • ProtonMail

    Freemium Web Android iPhone iPad Website

    Secure email with absolutely no compromises, brought to you by MIT and CERN scientists.

    Swiss Based
    ProtonMail is incorporated in Switzerland and our servers are located in Switzerland. We are outside of US and EU jurisdiction and all user data is protected by strict Swiss privacy laws.

    Zero Access
    Because of our end-to-end encryption, your data is already encrypted by the time it reaches our servers. We have no access to your messages, and since we cannot decrypt them, we cannot share them with third parties.

    Backwards Compatible
    ProtonMail works out of any modern web browser, there is nothing to install. We are also backwards compatible with other email providers so you can continue sending and receiving emails from friends who are not using ProtonMail.

    Forever Free
    We believe privacy is a fundamental human right and should be available for everyone. That's why we offer multi-tiered pricing including a free version that anyone can use. Let's bring privacy back to the people!

    Fully Anonymous
    We do not log IP addresses or require any personal information to sign up. We accept bitcoin and cash payments for paid accounts to ensure even paid account users have complete privacy.

    Cross Platform
    ProtonMail works on all devices, including desktops, laptops, tablets, and smartphones. It's as simple as visiting our site and logging in. There are no plugins or apps to install - simply use your favorite web browser.

     

    ProtonMail icon
  • Signal

    Free Mac Windows Linux Android iPhone ... Android Tablet iPad Chrome Website

    TextSecure and RedPhone have been merged to create Signal!

    Using Signal, you can communicate instantly while avoiding SMS fees, create groups so that you can chat in real time with all your friends at once, and share media or attachments all with complete privacy. The server never has access to any of your communication and never stores any of your data.

    • Say Anything - Send high-quality group, text, picture, and video messages, all without SMS and MMS fees.
    • Speak Freely - Make crystal-clear phone calls to people who live across town, or across the ocean, with no long-distance charges.
    • Be Yourself - Signal uses your existing phone number and address book. There are no separate logins, usernames, passwords, or PINs to manage or lose.
    • Stay Secure - We cannot hear your conversations or see your messages, and no one else can either. No exceptions. You can even tap and hold on a contact's name to see advanced identity verification options. Everything in Signal is always end-to-end encrypted and painstakingly engineered in order to keep your communication safe.
    • Go Fast - Signal is optimized for speed without compromise. Our state-of-the-art Axolotl protocol is unmatched in its performance, strength, and reliability.
    • Remain Connected - Push notifications let you know when new messages have arrived, and they'll be waiting for you even if your battery dies or you temporarily lose service.
    • Get Organized - Unique archive functionality makes it easy to keep track of the conversations that matter to you right now.
    • Pay Nothing - Signal is supported by a team of dedicated developers, community donations, and grants. There are no advertisements, and it doesn't cost anything to use.
    • View Source - All of our code is free, open, and available on GitHub (https://github.com/WhisperSystems ).
    • Join Movements - Technology developed by Open Whisper Systems is trusted and used by millions of people around the world every day.

     

    Signal icon
  • Transportr

    Free Android Website

    Transportr is the public transport companion that respects your privacy and your freedom. Transportr is a non-profit app developed by people around the world to make using public transport as easy as possible wherever you are. Currently, it works best in Europe, but also supports many places world-wide. If you live in an unsupported area, consider adding it to Transportr. It finds directions from your home, your current position or a given station to wherever you want to go. You can also save entire trips as favorites and find next trips with one click. Discover nearby stations and show upcoming departures including the delays (if there are any).

     

    Transportr icon



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