My Top 30 Sovereignty Apps

About me

  • Crypto-anarchist and voluntaryist focused on technology and society hacking.
  • Global citizen and perpetual traveller (with the residency in Panama and Paraguay)
  • Involved in IT security more 20 years (founder of IT security companies and
  • Digital privacy activist and Internet freedom fighter
  • Co-founder of hackerspace Progressbar, Paralelní Polis and Parallel Polis
  • The organiser of the best HCPP conference in the world :-)

Firstly, why Android I?

Why yes:

  • It is open-source - easily and completely auditable what is crucial for security (iOS, Blackberry, Windows Mobile are proprietary closed-source platforms) - you know there isn't anything hidden that might violate your privacy (e.g. Carrier IQ)
  • There is a "privacy-aware" Android distribution - Lineage OS / Replicant that has removed any Google spying functionality & includes incognito mode, torification etc.
  • It supports all advanced Linux security features (e.g. SELinux, full disk encryption, etc.)

Why not:

  • iOS marketplace is more conservative, it may contain less malware/trojans than Android app repositaries

 Why Android II?

Privacy-aware Android distributions

Password managers:

Dashlane (1)

  • Of course, the best opensource is KeePass
  • Dashlane is a commercial application, but with
    • great user experience
    • supporting all operating systems and browsers
    • password sharing
    • password analysis
    • Dark Web Monitoring and VPN

Two-factor authenticators

Authy (2)

  • Commercial reliable app

FreeOTP Authenticator (3)

  • Open-source available at F-Droid

Privacy-aware browsers

Brave (4)

  • Mobile version doesn't support Tor private window
  • It blocks effectively most advertisements
  • BAT tokens and related ads can be disabled


Fennec F-Droid (5)

  • The latest Firefox with removed all proprietary bits found in official Mozilla's builds

Decentralized mesh network apps


Bridgefy (6)

  • Communicate & work using decentralized mesh networks (wifi & Bluetooth) instead of the Internet, during large events, natural disasters, schools, and much more

  • Used during demonstrations by Hong Kong / Belarus protesters


Privacy-aware search engines


DuckDuckGo (7)

  • Unlike Google, the DuckDuckGo never store your personal information or display ads. No tracking at all

  • It is not so powerful like Google, but highly usable in these days

Opensource privacy-aware Facebook and Twitter front-ends

Face Slim (8)

  • FaceSlim is free of spyware, unlike what is built into the official Facebook and Facebook Messenger applications

Twidere (9)

  • Twitter/Mastodon/StatusNet/Fanfou app free of ads

Open-source Android application repository

F-Droid (10)

  • F-Droid is an installable catalogue of FOSS (Free and Open Source Software) applications for the Android platform.
  • Thanks to F-Droid you can completely stay out of Google services (including Google Play) if you use Lineage OS or Graphene OS

Anonymous mobile number service provider 

Hushed (11)

  • Using BTC you can buy an anonymous mobile number in many countries (including the US/UK/Canada/Puerto Rico)
  • Some countries (e.g. the Czech Republic or Slovakia) require a proof-of-address verification
  • With DualSpace you can create a separate instance of your favourite messenger app associated with your anonymous Hushed number and route all traffic through Tor (thanks to Orbot)

Anonymization networks


Orbot (13)


  • Both apps allow you to connect to Tor/I2P anonymization network (including Onion/I2P addresses)
  • You can explicitly choose apps you want to torify (e.g. DualSpace cloned apps - secure messengers associated with an anonymous number)

Privacy-aware crypto wallets

Incognito Wallet(14)

  • Multi-currency, multi-purpose privacy wallet. Send and receive assets anonymously.
  • Buy and sell confidentially without KYC. Enable privacy for all your cryptocurrencies and all your crypto activities.

Phoenix (15)

  • Phoenix runs natively on Lightning, non-custodial, easy to use

Privacy-aware crypto wallets II


  • Monero wallet with the power of the service
  • Monerujo can be used to make both XMR / BTC payments - just scan the given QR code or paste the BTC address into the send field, and the magic happens seamlessly in the background.


  • modern bitcoin wallet hand forged to keep your transactions private your identity masked and your funds secured
  • thwart blockchain based surveillance and censorship

Secure Video Calls

Jitsi Meet(18)

  • ​Probably the best open-source video conference system
  • You can host it on your own server and therefore make secure video calls without any 3rd parties!
  • Using Jibri recording or streaming services, you can record all your video calls (and/or store them in Dropbox)

SSH and VPN secure access services

JuiceSSH (19)

  • ​The top free SSH client for Android (for those who still use a command line :-)
  • Can be used for SSH tunnels, SOCKS procies

ProtonVPN (20)

  • A lot of supported countries, Secure Cores (two nodes), Tor exit nodes, very fast, can be bought anonymously by crypto 

Privacy enhancers

Jumbo (21)

  • Increase the security of your Google, Facebook, and other internet and social media account, monitor the dark web for data breaches, reduce the number of unwanted robocalls
  • Reduce your digital footprint (Delete old Tweets from Twitter, remove old Facebook posts, delete voice recordings from Alexa , Remove old photos from Instagram)
  • Limit tracking- turn off Facebook’s facial recognition feature, limit Google’s use of your search history, protect your data from being used by Google and Facebook for ads and advertisers
  • Prevent data leaks, restrict what info your Facebook profile shows to the public, restrict who can tag you on Facebook, etc.

Open-source offline maps

MAPS.ME / Osmand+ (22)

  • Both apps use OpenStreetMaps maps and do not track you
  • MAPS.ME has a better usability, OsmAnd+ is more geek
  • There are a lot of modules to both apps

Host-based firewalls

NetGuard (23)

  • NetGuard provides simple and advanced ways to block access to the internet - no root required.

  • Applications and addresses can individually be allowed or denied access to your Wi-Fi and/or mobile connection.

  • Blocking access to the internet can help

    • reduce your data usage

    • save your battery

    • increase your privacy

Ad-free YouTube app

NewPipe (24)

  • Original YouTube experience on your smartphone without annoying ads and questionable permissions
  • Unlike the official YouTube app, NewPipe can run on the background (and playing music)
  • It is definitely a reason why to install F-Droid open-source repository

Google services open-source alternatives

Nextcloud (25)

  • The self-hosted productivity platform that keeps you in control

  • Share and collaborate on documents, send and receive an e-mail, manage your calendar and have video chats without data leaks

  • As a fully on-premises solution, Nextcloud Hub provides the benefits of online collaboration without compliance and security risks.

Secure mail clients

r2mail2 (26)

  • The most robust secure e-mail client with full PGP and S/MIME support (unlike K9-Mail), fully encrypted storage

ProtonMail (27)

  • The secure webmail service hosted in Switzerland
  • Can be paid by Bitcoins
  • Natively support of PGP (all emails inside of ProtonMail are PGP end-to-end encrypted, non-PGP non-ProtonMail users can still use passphrases to decrypt their emails)

Secure messengers

Signal (28)

Threema (29)

Status (30)

  • All the above projects are modern, open-source, secure messengers with end-to-end encryption
  • Signal requires a phone number, Status is decentralized

Thanks for your attention!