Users who want to be absolutely sure about their security can verify each chat's 60-digit security-verification code or QR code that you can compare with a contact to ensure that your conversation is encrypted.Ĭombined with WhatsApp's ubiquity, ease of use and the ability to send voice messages, photos, and video messages, and conduct group chats, this makes for a robust and fully encrypted mobile-messaging app. If you're not comfortable with Facebook's presence, there are plenty of other options on this page. No matter who owns it, WhatsApp remains one of the easiest ways for anyone to use end-to-end encrypted messaging. (The founders left, and one co-founded Signal.) Some WhatsApp user behavioral data is now shared with Facebook, but the messages remain entirely walled-off. In 2014, WhatsApp was bought by Facebook, which later broke its promises to WhatsApp's founders that it wouldn't "monetize" WhatsApp.
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The app is also testing disappearing messages and photos, transfers of chat history when switching between iOS and Android phones, using a single account on four different devices at once, and, to be available in the fall of 2021, end-to-end-encrypted backups. It's continuously adding tweaks to the app's security and privacy features, such as fine-tuned group invitations and controls so that you're always aware who is reading your group chats. The world's most widely used stand-alone chat and call app, WhatsApp has used Signal's end-to-end encryption protocol on all messages since 2016. But its impeccable security is well worth spending $4 for.ĭownload Threema: Android, iOS 3. So what's the downside? Threema hasn't really caught on in the English-speaking world, and you may have a hard time finding other users unless you speak German. Charging a few bucks for the app makes that financially possible. While some other secure-messaging apps that haven't reached WhatsApp or Telegram adoption levels have pivoted toward the enterprise market to stay afloat, Threema still has one foot planted firmly in the consumer market. In addition to the usual raft of messaging features such as encrypted text, voice, picture, and video messaging, the app also includes file sharing (20MB per file), emojis, group messaging and a polling system for getting feedback from friends and contacts. You'll also get a scannable QR code that you can present to other Threema users if you meet in person but don't want to exchange names.
Otherwise, you can associate your account with an email address or phone number, which makes it easier for other Threema users to find you. When you fire up the app, it generates a unique Threema ID key, allowing you to use the app completely anonymously - no names required. Threema is a very secure end-to-end encrypted messaging app that uses the NaCl cryptography library to protect your communications.
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