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Threema. The Secure Messenger

Threema. The Secure Messenger

Secure. Anonymous. Private.

712 ratings
651 reviews
#2 in paid Social Networking
🔧 Utilities
🌐 Social Networking
$6.99

Details

Released
December 28, 2012
Updated
October 6, 2026

Features

Developer

Threema GmbH
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ipad
📈no. 23
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🎪3 available
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❓5 answered
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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
Show original description

What users say about Threema. The Secure Messenger

Reviews of Threema. The Secure Messenger are mostly positive: the Social Networking app is rated 4.2/5 from 712 App Store ratings. What users like most: secure messaging, easy to use. Top complaints: unreliable video/voice calls, inconsistent notification delivery. Summarized from real user reviews.

Positive things

  • 🔒Secure messaging
  • 👍Easy to use
  • 🚀Fast and reliable
  • 💡Anonymous ID instead of phone number
  • 🔒Based in privacy-friendly Switzerland
  • 👍Clean and polished interface

Negative things

  • 🐛Unreliable video/voice calls
  • 🐛Inconsistent notification delivery
  • 🐛Bugs and crashes after updates
  • 🔒Lack of auto-delete/expiring messages
  • 👎Limited emoji/reaction options
  • 🐛Difficulty transferring data to new devices
See all reviews

What's New in Threema. The Secure Messenger

7.4.1

October 6, 2026

• Various improvements in relation to Threema calls Threema 7.4 • Added an alphabetical index scroller to the contact list when starting a new chat • Added swipe actions for search results in the contact list • Improved audio controls in calls, voice messages, and media playback • Improved Threema calls and features related to Threema 2.0 for desktop • Fixed a bug that caused a warning about multiple connections to be shown incorrectly • Fixed a bug that prevented the typing indicator from disappearing • Fixed various bugs and crashes in relation to calls • Other improvements and various bug fixes • Note: Starting with the next major app version, iOS 17 will no longer be supported

More

Charts

Top Paid

🥈 2

Social Networking

The app has maintained its position at 2 recently.

Last updated on October 17, 2026.

Top Paid

📈 23+6

Global

This app rose +6 positions in Global chart.

Last updated on October 17, 2026.

Events

Read more about Emoji reactions are here!
Event EndedMajor Update

Emoji reactions are here!

React to Threema messages with emojis.

Feb 17, 2025 — Mar 20, 2025

Read More

Read more about Try the new desktop app
Event EndedMajor Update

Try the new desktop app

You can now link up to two computers

Nov 4, 2024 — Dec 5, 2024

Read More

Read more about Bye-Bye Typos in Threema
Event EndedMajor Update

Bye-Bye Typos in Threema

Sent messages can now be edited and deleted

Aug 12, 2024 — Sep 12, 2024

Read More

See All

User reviews

Most RecentHighest RatedLowest Rated

Still a strong 5 star rating.

I have used Threema for several years now and think it is absolutely excellent. Not only that but the quality of Support is superb.
I have no problem whatsoever recommending Threema without reservation
CriticalEye12CriticalEye12

Response from developer

Thank you for your review! We are happy to hear that you are satisfied with our app.

複数台端末だと使いにくい

複数台にインストールしていると起動するたびエラー表示になってしまう。何台もの端末で使いたいのにちょっと不便すぎた。またSMS認証もできなかった（電話認証はできたけど）。今どきスマホ1台でしかメッセンジャー使わない人っているのかな？
shokaibanshokaiban

Works great, a pleasure to use

I’m using Threema for a least 10 years and love it.
Some challenges with switching android to IOS, but other than that a wonderful app!
321nickname1234321nickname1234

パスワード

とってもつかいやすい
yuu323yuu723yuuyuu323yuu723yuu

Absolutely brilliant

Secure , well built UI, reliable
Theodore SchwarzkopfTheodore Schwarzkopf
See 646 more reviews

Developer apps

Threema Work. For Companies
Threema Work. For Companies

Secure Business Messenger

🌐 Social Networking

(27)

Free
Threema OnPrem
Threema OnPrem

Self-Hosted Business Messaging

🌐 Social Networking

(2)

Free
See 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.