# Threema. The Secure Messenger — Secure. Anonymous. Private. > Secure, anonymous, end-to-end encrypted messaging and calling app. (iPhone/iPad app by Threema GmbH.) - Source: https://appshunter.io/ios/app/threema-the-secure-messenger/id578665578 (this page in markdown: same URL + `.md`) - Developer: [Threema GmbH](https://appshunter.io/developer/535112011) - Category: Social Networking, Utilities - Price: $6.99 - Rating: 4.20/5 from 698 App Store ratings · 641 written reviews indexed - Age rating: 4+ - Requires: iOS 17.0 · 110 MB - Languages: American English, Bulgarian, Czech, Dutch, French (France), German (Germany), Italian, Japanese, Korean, Polish and 9 more - Released: 2012-12-28 - Data updated: 2026-08-26 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/threema-the-secure-messenger/id578665578/reviews.md ## What is Threema. The Secure Messenger? 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! ## Key features - 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 ## Chart rankings - #1 in Top Paid · Social Networking (US App Store) - #90 in Top Paid (US App Store) ## What do users think of Threema. The Secure Messenger? Overall sentiment: positive **Pros** - 🔒 Secure messaging - 👍 Easy to use - 🚀 Fast and reliable - 💡 Anonymous ID instead of phone number - 🔒 Based in privacy-friendly Switzerland - 👍 Clean and polished interface **Cons** - 🐛 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 **Commonly reported bugs** - Messages not sending or receiving - App freezing or crashing - Unreliable video/voice call functionality - Notification issues after updates - Data transfer problems when switching devices **Most requested features** - Add auto-delete/expiring message option - Improve video/voice call reliability - Enhance notification system - Expand emoji/reaction options - Simplify data transfer to new devices - Add iPad/desktop app support ## Recent user reviews (10 of 641) All indexed reviews: https://appshunter.io/ios/app/threema-the-secure-messenger/id578665578/reviews.md ### 5/5 — Megge *2026-08-13, version 7.3* Great app, no incredible! ### 1/5 — Easily one of the worst paid app I ever used *2026-08-11, version 7.3* I don’t know how an app can be so buggy and unpredictable in this age. And this is a paid app for God’s sake! It’s easily one of the worst paid apps I have ever used. Always something or the other.. it doesn’t connect.. those red and orange lines at the top. Have to restart so frequently. Honestly surprised how this is still on the AppStore. Very frustrating user experience. ### 1/5 — Issues *2026-08-11, version 7.3* So many issues for a paid app. ### 5/5 — The best, the safest messenger you ever need *2026-08-06, version 7.3* Compared to all the other main companies and their messengers , multimedia platforms.This one is the only one what really gives you privacy and peace of mind! ### 5/5 — A *2026-07-30, version 7.3* Amazing ### 5/5 — Proper anonymity *2026-07-25* It has always worked great for people who want a real anonymous messenger. Many options to set it up and your profile shows your user ID for if you need it. End to end encryption. Works as intended. ### 3/5 — Pour une application payante, on s’attend à mieux! *2026-07-08* 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. ### 1/5 — Messages not sending/going through *2026-07-06, version 7.2.5* For several weeks now, when I send regular text message and then get out of the app. It will not go through to the person I sent it to unless I open the app back up and it reloads and then it will send the message and if I don’t do it right away the message will literally take hours to be sent if I don’t go back into the app. The last couple updates have been trash and I’ve been having all kinds of issues like this and the app not even opening when I receive a message. ### 5/5 — Exceptional *2026-07-05, version 7.2.5* Excelente way to keep it everything private ### 5/5 — ずっとこれ一筋です。 *2026-07-02* 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！ **Developer response:** 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 ## Frequently asked questions about Threema. The Secure Messenger ### 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. ## Version history (last 5 releases) ### 7.3.2 — 2026-08-25 • Various improvements and various bug fixes Threema 7.3.1 • Fixed a crash that could occur during 1:1 calls • Fixed a bug in relation to forwarding messages • Other improvements and various bug fixes Threema 7.3 • Various UX improvements • Improvements in relation to the logging system • Improved video converting when “Original” is selected as the quality • 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 ### 7.3 — 2026-07-13 • 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 ### 7.2.5 — 2026-06-22 • Fixed an issue that caused only a black screen to be displayed in certain cases Threema 7.2.4 • Fixed a bug that could occur when opening chats • Fixed a bug that could occur when connecting to the server • Fixed a bug that occurred when deleting or editing sent messages • Various improvements related to VoiceOver and voice messages Threema 7.2.3 • Fixed a bug related to restoring a Threema Safe backup with an own server Threema 7.2.1 • Easy device switching: When switching to a new iPhone, Threema data can be transferred directly to the new device using Quick Start • Various performance optimizations • General improvements and various bug fixes Threema 7.2 • 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 ### 7.2.4 — 2026-06-15 • Fixed a bug that could occur when opening chats • Fixed a bug that could occur when connecting to the server • Fixed a bug that occurred when deleting or editing sent messages • Various improvements related to VoiceOver and voice messages Threema 7.2.3 • Fixed a bug related to restoring a Threema Safe backup with an own server Threema 7.2.1 • Easy device switching: When switching to a new iPhone, Threema data can be transferred directly to the new device using Quick Start • Various performance optimizations • General improvements and various bug fixes Threema 7.2 • 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 ### 7.2.3 — 2026-06-01 • Fixed a bug related to restoring a Threema Safe backup with an own server Threema 7.2.1 • Easy device switching: When switching to a new iPhone, Threema data can be transferred directly to the new device using Quick Start • Various performance optimizations • General improvements and various bug fixes Threema 7.2 • 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 ## Apps similar to Threema. The Secure Messenger | App | Rating | Price | Category | | --- | --- | --- | --- | | [Telegram Messenger](https://appshunter.io/ios/app/telegram-messenger/id686449807) | 4.0 (277,577) | Free | Social Networking | | [WhatsApp Messenger](https://appshunter.io/ios/app/whatsapp-messenger/id310633997) | 4.7 (18,467,867) | Free | Social Networking | | [Signal - Private Messenger](https://appshunter.io/ios/app/signal-private-messenger/id874139669) | 4.7 (1,077,317) | Free | Social Networking | | [JusTalk - Video Chat & Calls](https://appshunter.io/ios/app/justalk-video-chat-and-calls/id627958823) | 4.4 (74,799) | Free | Social Networking | | [Rakuten Viber Messenger](https://appshunter.io/ios/app/rakuten-viber-messenger/id382617920) | 4.6 (831,030) | Free | Social Networking | | [Messenger VPN: Private Chat](https://appshunter.io/ios/app/messenger-vpn-private-chat/id1404922565) | 4.5 (3,648) | Free | Social Networking | ## More apps by Threema GmbH - [Threema Work. For Companies](https://appshunter.io/ios/app/threema-work-for-companies/id1105927783) - [Threema OnPrem](https://appshunter.io/ios/app/threema-onprem/id1348687756) All apps by Threema GmbH: https://appshunter.io/developer/535112011 ## Related topics [threema](https://appshunter.io/ios/topics/threema) · [threema private](https://appshunter.io/ios/topics/threema-private) · [messaging apps private](https://appshunter.io/ios/topics/messaging-apps-private) · [threema work](https://appshunter.io/ios/topics/threema-work) · [mensajeria privada](https://appshunter.io/ios/topics/mensajeria-privada) · [keeperchat encrypted messenger](https://appshunter.io/ios/topics/keeperchat-encrypted-messenger) · [vocera secure texting](https://appshunter.io/ios/topics/vocera-secure-texting) · [altruist secure bd](https://appshunter.io/ios/topics/altruist-secure-bd) · [quick actions for threema](https://appshunter.io/ios/topics/quick-actions-for-threema) · [encrypted chat](https://appshunter.io/ios/topics/encrypted-chat) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*