Top 14 Apps Like Threema. The Secure Messenger for iOS and Android

Pure instant messaging — simple, fast, secure, and synced across all your devices. One of the top 5 most downloaded apps in the world with over 950 million active users.

Rakuten Viber is a secure, fun, and exciting messaging and calling app, connecting over a billion people worldwide!

Signal is a messaging app with privacy at its core. It is free and easy to use, with strong end-to-end encryption that keeps your communication completely private.

Session is a new breed of private messenger, built on a unique network of user-operated servers spread all over the world. With no central servers, Session can’t leak or sell your data.

Be together whenever, with our free* all-in-one communication app, complete with unlimited text, voice, video calling and group video chat features.

WhatsApp from Meta is a FREE messaging and video calling app. It’s used by over 2B people in more than 180 countries.

Comment Keyboard for Instagram speeds up your interaction on Instagram, by allowing you to one tap comment. It comes packed with a proven list of highly engaging comments and chooses a random next one after use.

Keeping up with Ladies, Tablers, and members of 41 international is now faster and easier than ever. Access contact information, browse associations and areas, and stay connected with clubs important to you.

Jitsi Meet lets you stay in touch with all your teams, be they family, friends, or colleagues. Instant video conferences, efficiently adapting to your scale.

The Fit Tolerance Calculator application calculates the fit tolerance of "hole" and "shaft" from the input diameter value.

Time Calc: a beautiful simple and accurate time calculator that allows you to perform elementary operations on units of time like hours, minutes and seconds. It's useful to log flight hours in a Logbook.

Quick search with smart hints and Alice, who will answer any question.