Threema. The Secure Messenger

Threema. The Secure Messenger

Threema GmbH · 4.1 ★ · £6.99

Screenshots

Description

Threema is the world’s best-selling secure messenger, used by more than 12 million people in over 175 countries, developed in Switzerland, and designed with privacy and data protection in mind. Whether chats, calls, or files, everything is end-to-end encrypted, and no data trail is left behind. Instead of a phone number or email address, a randomly generated Threema ID serves as a unique identifier – anonymous and secure. Threema protects what really matters: your privacy.

Advantages of Threema:
• Text and voice messages, including emoji reactions
• End-to-end encrypted voice, video, and group calls
• Location sharing
• Sending files in all formats (PDF, GIF, MP3, ZIP, and more)
• Ability to edit sent messages and delete them for chat partners
• Desktop app and web client for convenient chatting on your PC
• Group creation and polls
• Light or dark mode
• No ads, no trackers, no data collection
• Identity verification of contacts by scanning their QR code

Reliable security:
• Open source and regular audits
• Servers in Switzerland
• Anonymous use possible: no phone number or email address required
• Messages are deleted from the server immediately after delivery

Do you have any questions or problems? Our FAQ can help: https://threema.com/support

Enjoy using Threema!

Developer

Threema GmbH

Developer ID: 535112011

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What's New

Version 7.0.7 · 10 Apr 2026

Threema 7.0.7 • Fixed various bugs that could occur when connecting to Threema Web Threema 7.0.6 • Various bug fixes and general improvements Threema 7.0.5 • Various improvements related to restoring a Threema Safe backup • Various bug fixes and general improvements Threema 7.0.4 • Fixed a bug that caused messages to be sent late when switching networks • Fixed various bugs related to restoring a Threema Safe backup • Various bug fixes and general improvements Threema 7.0.2 • Various bug fixes Threema 7.0.1 • More reliable Threema calls • Various bug fixes and general improvements Threema 7.0 • This version supports iOS 17 and newer • New: Recommend Threema Work and earn a referral bonus! • A more modern look with redesigned screens for • Adding contacts • Creating groups • Starting a new chat • Creating and viewing polls • Previewing file messages and full-screen images • Selecting a document or contact • Scanning QR codes • Editing your profile • Linking a phone number or email address • Setting a revocation password • ID export • Various under-the-hood changes • Various bug fixes and general improvements

Ratings & Reviews

App Store

4.1

148 ratings

N/A downloads

Google Play

4.0

75,165 ratings

5,000,000+ downloads

5★
62%
4★
13%
3★
5%
2★
1%
1★
19%

Recent Reviews

Seb T

Google Play

Seit der Einführung der Desktop App gehen die Threema Web sessions nicht mehr zuverlässig. In der Threema App lassen sich auch keine WebSessions mehr scannen. Angeblich keine Kamera verfügbar. Das sehen alle anderen Apps anders. Bananensoftware

17 Apr 2026

Ina Ina

Google Play

I was not able to use this app, doesn't transfer my contact and I can't texting to anyone

12 Apr 2026

Thorin Oakenshield

Google Play

It was all good till I got "too many IDs created for this purchase..." error. Unfortunately now I can't create another ID and can't use the app. I can't renew or but another license either.

10 Apr 2026

Txxx Wyyy

Google Play

does not mention this only works with other three ma account holders and apparently impossible to get a refund so just pay them, then don't bother to install the app. no free trial, live & learn

10 Apr 2026

PJ “我孩子的漂亮白人父親” Hawkins

Google Play

dnt work

10 Apr 2026

Halloween 2!

App Store

Secure

What a great way to communicate

4 Mar 2026

Andi McBurnie

App Store

Andimac

Secure European communications tool. Does exactly what it says on the tin, and at €6 for a lifetime license, no advertising, no meta using your data!

9 Feb 2026

Princess of the Pea

App Store

It grew on me - quickly

An acquired taste certainly, but for me the clincher is the fact it is not linked to any mobile number, as opposed to other messenger services. Using it for 8 years now, it never crashes, and has made me feel safe to communicate as I wish. Recommended.

19 Dec 2025

MartinZett

App Store

Worst messaging app

There are many alternatives out there. I don’t know why my dad has chosen threema for his choice of communication app, but I’m forced to use it, unless I don’t want to text with my dad anymore. The app is just so basic, not intuitive, calls don’t go through and nobody knows why. Glad it’s secure. Would be nicer if it would work as intended instead.

18 Nov 2025

Hemisphere happenings

App Store

A different view

Great app. However, it really needs the ability to go into Split View or Slide Over like many other apps, even messengers can on the iPad. I am often doing other things and don't like that I have to switch between apps completely instead of just having it to the side or over another app I'm working in. Please could you see your way to adding this vitally important feature? Thank you.

3 Aug 2025

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