Threema. The Secure Messenger

Threema. The Secure Messenger

Secure. Anonymous. Private.

683 ratings
631 reviews
#1 in paid Social Networking
🔧 Utilities
🌐 Social Networking
$6.99

Details

  • Released
  • Updated
  • December 28, 2012
  • July 13, 2026

Features

Threema. The Secure Messenger screenshot #1 for iPhone
Threema. The Secure Messenger screenshot #2 for iPhone
Threema. The Secure Messenger screenshot #3 for iPhone
Threema. The Secure Messenger screenshot #4 for iPhone
Threema. The Secure Messenger screenshot #5 for iPhone
Threema. The Secure Messenger screenshot #6 for iPhone
Threema. The Secure Messenger screenshot #7 for iPhone
Threema. The Secure Messenger screenshot #8 for iPhone
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About

This secure messenger prioritizes privacy with end-to-end encryption for all communications. It uses a unique ID instead of personal information, leaving no data trail and offering anonymous use. Enjoy private chats, calls, and file sharing without ads or trackers.

End-to-end encrypted chats and calls
Anonymous use with Threema ID
File sharing in all formats
Edit and delete sent messages
Desktop app and web client
Group creation and polls
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What users say

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+1

What's New in Threema. The Secure Messenger

7.3

July 13, 2026

• Various UX improvements • Improvements in relation to the logging system • Improved video converting when the quality “Original” is selected • Memory and performance improvements when handling large files • Improvements in relation to Threema calls • Fixed a bug in relation to group chat notifications • Fixed a possible bug that could occur when encoding URLs • Fixed a bug in relation to voice messages • Other improvements and various bug fixes

More

Charts

Top Paid

The app has maintained its position at 1 recently.

Last updated on July 19, 2026.

Top Paid

📉 76-10

Global

This app dropped -10 positions in Global chart.

Last updated on July 19, 2026.

Events

Read more about Emoji reactions are here!

Emoji reactions are here!

React to Threema messages with emojis.

Feb 17, 2025 Mar 20, 2025

Read more about Try the new desktop app

Try the new desktop app

You can now link up to two computers

Nov 4, 2024 Dec 5, 2024

Read more about Bye-Bye Typos in Threema

Bye-Bye Typos in Threema

Sent messages can now be edited and deleted

Aug 12, 2024 Sep 12, 2024

User reviews

Pour une application payante, on s’attend à mieux!

Threema est un beau projet qui mise sur la sécurité avant tout ce qui est pour moi très important. Malheureusement, récemment, beaucoup de petits problèmes viennent régulièrement altérer l’expérience. On reçoit tout à coup certains messages avec quelques heures de décalage, les appels ne sont pas très stables ou ne connectent parfois simplement pas. La connexion aux serveurs est plutôt capricieuse et imprévisible. Parfois tout marche parfaitement, et d’autres fois rien ne va. Je voulais réellement pouvoir faire de Threema mon appli de communication par défaut, mais malheureusement le manque de stabilité fait que je continue à faire des aller-retour avec Signal et d’autres.
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ずっとこれ一筋です。

広告なくて相手とストレスなく連絡が取れる。当たり前のことだけど最高です。10年近く使っていますが、バグ対応も早く、信頼できるアプリです。開発陣の皆様、いつも対応ありがとう!

Response from developer

Provided that a stable Internet connection is established, messages are typically delivered within a few seconds if the background permissions on the recipient’s phone are configured correctly. We are happy to help if you need assistance in configuring the settings correctly: help@threema.ch

Не регистрирует

Не регистрирует, не приходит ID код

Says initialise then nothing

UPDATE: WON’T CALL OR RECEIVE CALLS. 🤦‍♀️ Do not pay money for this absolute waste of space. Zero support too.
—-
Very often won’t call. Says it’s initialising but doesn’t. I like it other than this.

更新后老是黑屏呀

老是黑屏!老是黑屏!老是黑屏!
希望修复!!!!!
希望改善 另外希望兼容一下低版本的iOS

Developer apps

User experience

🐞

Reported Bugs

5 issues

Messages not sending or receiving

Bug

App freezing or crashing

Bug

Unreliable video/voice call functionality

Bug

Notification issues after updates

Bug

Data transfer problems when switching devices

Bug

Requested Features

6 requests

Add auto-delete/expiring message option

Feature

Improve video/voice call reliability

Feature

Enhance notification system

Feature

Expand emoji/reaction options

Feature

Simplify data transfer to new devices

Feature

Add iPad/desktop app support

Feature

FAQ

What is Threema?

Threema is a secure messenger designed with privacy and data protection in mind. It offers end-to-end encrypted text and voice messages, calls, and file sharing. It uses a unique Threema ID for identification, allowing for anonymous use and leaving no data trail.

How does Threema ensure security and privacy?

All communications on Threema are end-to-end encrypted. It is open source, undergoes regular audits, and its servers are located in Switzerland. It does not require a phone number or email address, and messages are deleted from the server immediately after delivery.

Is Threema free to use?

No, Threema is a paid application. This model allows the developers to focus on privacy and security without relying on ads or data collection. The one-time purchase provides access to all features.

What devices is Threema compatible with?

Threema is available for mobile devices and also offers a desktop app and web client for convenient chatting on your PC. This ensures you can communicate securely across multiple platforms.

What are the main use cases for Threema?

Threema is ideal for anyone who wants to communicate privately and securely. This includes individuals concerned about data privacy, journalists communicating with sources, or anyone who prefers to avoid having their personal information linked to their messaging activity.