Threema. The Secure Messenger

Threema GmbH · 4.3 ★ · A$9.99

App Store Google Play

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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 7.2 · 11 May 2026

• Fixed several bugs related to the Liquid Glass design • Fixed several bugs related to individual and group calls • Fixed several bugs related to forwarding messages • Various performance optimizations • General improvements and various bug fixes

Ratings & Reviews

App Store

4.3

157 ratings

N/A downloads

Google Play

4.5

75,293 ratings

5,000,000+ downloads

5★

82%

4★

3★

2★

1★

Recent Reviews

Ade K Widjaja

Google Play

Application force closed after the latest update on beta. Running on Pixel 8 Android 16

19 May 2026

Joseph Hall

Google Play

Ultra secure.

19 May 2026

D. A.

Google Play

wow, with so many passwords only one thing will happen. no security. in order to remember all passwords, for this app, and all the other 100 passwords used daily. tried to move the app from one phone to another. no luck. and it's payed

13 May 2026

Prabhitha K P

Google Play

Awesome App for secure msges

12 May 2026

AJ THIS NAME IS TAKEN

App Store

ID

I'm not sure they are serious about seeking customers. When you join it says run your finger over the screen. It does not tell you that your ID will then be XH753GU78 or some such rubbish. The first time I have to provide this number I'm screwed because this is about as user unfriendly you can get. Who can remember that? So, when it happens that I need this number, I guess I just delete the app and kiss my AUD$10 goodbye.

10 May 2026

Grey-Ape

Google Play

The UI could be better imo but that's not a major point. I'd like to see a function implemented where you could input a code gotten from scanning an on screen QR code implemented because you can't verify your contacts without scanning a physical QR code which sucks.

6 May 2026

Kt18tee

App Store

Packets

Packets be packets, bags be bags, Threema be Threema....

12 Apr 2026

Shellal333

App Store

Best Secure 'Private MsgApp' yet!

Never had a problem using this app. As with most apps there is room for improvement but that's just nitpicking. I've been using this app for well over 12 months now and I can say compared to the others it really is in a league of its own. Good stuff right here!!!

2 Apr 2026

Percicious

App Store

Stick with it

A little difficult to learn how to use but a bit of extra instruction would be really helpful and probably be beneficial to everyone in the long time and short-term

27 Feb 2026

RealTalk101*

App Store

NOT a SECURE MSG APP

This is a paid only app and it boasts its superior encryption and privacy capabilities. Yet, despite so many users complaining about the inability to set a BURN ON READ TIMER or CUSTOM MESSAGE AUTO DELETE the app still only auto deletes messages after 1 week. Users need a custom burn on read timer ASAP. Only then will this app compete with WICKR.

24 Dec 2025