Threema OnPrem
Threema GmbH Social Networking iPhoneiPadiPod touch
Threema OnPrem is a free Social Networking app for iPhone and iPad by Threema GmbH. Rated 5.0/5 from 2 ratings. Requires iOS 17.0. Updated October 12, 2026.
- Rating
- 5.0
- 2 ratings
- Price
- Free
- on the App Store
- Size
- 111 MB
- Age 4+
- Updated
- Oct 12
- 2026 · v7.4.2
Screenshots
About Threema OnPrem
Threema OnPrem is the self-hosted communication solution for organizations with the highest security requirements. The combination of Threema’s proven security architecture and complete data sovereignty creates an independent communication environment that is unmatched in terms of confidentiality – ideal for government agencies, police forces, and industrial companies. Advantages of Threema OnPrem: • 100% data sovereignty through hosting on your own servers • Proven Threema security architecture • Confidential communication in teams, groups, and projects • End-to-end encrypted voice and video calls • Secure exchange of files and documents in all formats • Cross-platform use thanks to mobile app, desktop app, and web client • Additional protection of confidential chats with PIN or fingerprint NOTE: Before you can use this app, Threema OnPrem must be set up on your company server. For more information, visit threema.com/onprem. Enjoy using Threema OnPrem!
What’s new
Version 7.4.2 · Updated October 12, 2026
•Fixed a crash that could occur when launching the app Threema OnPrem 7.4.1 • Various improvements in relation to Threema OnPrem calls Threema OnPrem 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 OnPrem 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
App privacy
The developer, Threema GmbH, reported these privacy practices to Apple.
Data Linked to You
The following data, which may be collected and linked to your identity, may be used for the following purposes:
- Contact Info: Email Address, Phone Number
- Identifiers: User ID
Used for: App Functionality
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Diagnostics: Crash Data
Used for: App Functionality
Alternatives to Threema OnPrem
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Threema OnPrem | 5.0 / 5 (2 ratings) | Free | October 12, 2026 | |
| Kedr | 1.4 / 5 (5) | Free | Jul 16, 2025 | Compare |
| Duo Messenger | 2.3 / 5 (3) | Free | Apr 21, 2025 | Compare |
| EXTRA SAFE: Self-Custody Chat | 4.4 / 5 (99) | Free | Oct 12, 2026 | Compare |
| Crypviser Secure Messenger | 4.5 / 5 (80) | Free | Feb 1, 2024 | Compare |
| WireMin: Chat Freely, Securely | 4.7 / 5 (28) | Free | Sep 17, 2026 | Compare |
| Zing Messenger: Chat & Voice | 3.6 / 5 (191) | Free | Oct 10, 2026 | Compare |
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