Android Apps for Privacy and Security

Open source apps.


  • SnoopSnitch

    Free Android Website

    Collects and analyses mobile radio data to make you aware of your mobile network security and to warn you about threats like fake base stations (IMSI catchers), user tracking, and SS7 attacks.

     

    SnoopSnitch icon
  • Shelter

    Free Android Android Tablet F-Droid Website

    Shelter is a Free and Open-Source (FOSS) app that leverages the “Work Profile” feature of Android to provide an isolated space that you can install or clone apps into.

    Shelter comes with absolutely no advertisement / statistics / tracking SDKs bundled with it. All source code is available in at https://git.angry.im/PeterCxy/Shelter or mirror https://github.com/PeterCxy/Shelter and the sources are licensed under WTFPL.

    This app depends on your Android system’s implementation of Work Profile. Some vendor / custom ROMs may have a broken implementation that may cause crashes and even bricking of your device. One such example is MIUI from Xiaomi. I currently provide no support for such ROMs because I personally do not own any of these devices. If you are running Shelter on these ROMs, you are on your own. If any developer out there own these devices and could make Shelter run on these ROMs, please send pull requests and I’ll be happy to merge them.

    Features / Use Cases

    • Run apps inside the isolated profile so they cannot access your data outside the profile
    • “Freeze” (disable) background-heavy or seldom-used apps when you don’t need them. This is especially true if you use apps from "some company".
    • Clone apps to use two accounts on one device

    Caveats

    Shelter is not a full sandbox implementation. It cannot protect you from:

    • Security bugs of the Android system or Linux kernel
    • Backdoors installed in your Android system (so please use an open-source ROM if you are concerned about this)
    • Backdoors installed into the firmwares (no way to work around this)
    • Any other bugs or limitations imposed by the Android system.

    Also, Shelter cannot create more than 1 work profile on one Android device, and cannot co-exist with any other apps that manages a Work Profile. This is due to the limitations of the Android system, and I can do nothing about this.

     

    Shelter icon
  • island

    Free Android Website

    What is “Island”
    “Island” is a sandbox environment to clone selected apps and isolate them from accessing your personal data outside the sandbox (including call logs, contacts, photos and etc) even if related permissions are granted. Device-bound data (SMS, IMEI and etc) is still accessible.

    Isolated app can be frozen on demand, with launcher icon vanish and its background behaviors completely blocked.

    How does it work
    Island takes advantage of the “managed profile” feature on Android 5.0+, which is also the base of “Android for Work”, to create an isolated sandbox for apps with their data.

    App needs to be cloned in Island first. Afterwards, the clone can run parallel aside from the original one. (even with different accounts signed-in) It can be frozen on demand by Island. (NO ROOT REQUIRED)

    If Greenify is also installed, apps can be frozen automatically by “Auto-freeze with Greenify” action (in the overflow menu), just like normal app hibernation in Greenify.

     

    island icon
  • CopperheadOS

    Commercial Android Website

    A security and privacy focused mobile operating system compatible with Android apps. Google-free secure Android for the latest hardware.

     

    CopperheadOS icon
  • Bromite

    Free Android Android Tablet Website

    Bromite is a Chromium fork with support for ad blocking and enhanced privacy.
    Bromite is only available for Android Lollipop (v5.0, API level 21) and above.


    Features:

    https://github.com/bromite/bromite#features


    Features not related to privacy:

    https://github.com/bromite/bromite#features-not-related-to-privacy


    Does Google Sync work?

    • No. This is not a limitation of Bromite but of all Chromium-based projects in general, as general public is not allowed to use Google's APIs for free unless when using Chrome.


    Small F-Droid iconF-Droid repository:

    https://www.bromite.org/fdroid


    Bromite Wiki:

    https://github.com/bromite/bromite/wiki


    Credits:

    https://github.com/bromite/bromite#credits


    Filters credits:

    https://github.com/bromite/bromite#filters-credits

     

    Bromite 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
  • 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

    Firewall (iptables frontend), based on DroidWall which is no longer being developed. A paid "donate"-version with more features it advertised within the app.

    Import/Export Rules to external storage
    Search Applications
    Multiple profiles with custom names
    Highlights system applications with custom color
    Notify on new installations
    VPN Support
    Device Admin support to protect against being uninstalled

    Requires root: Yes. iptables must run as root.

     

    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

    Free Android 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 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 Ubuntu Touch Website

    Signal is a messaging app with an unexpected focus on privacy, combined with all the features expected from a modern IM app. Signal has received a lot of praise from all around the world for its security and privacy-respecting technologies.

     

    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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