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Threema. The Secure Messenger 4+
Secure. Anonymous. Private.
Threema GmbH
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- £5.99
Screenshots
Description
Threema is the world’s best-selling secure messenger and keeps your data out of the hands of hackers, corporations, and governments. The service can be used completely anonymously. Threema is open source and offers every feature one would expect from a state-of-the-art instant messenger. The app also allows to make end-to-end encrypted voice, video and group calls. Using the desktop app and the web client, you can also use Threema from your desktop.
PRIVACY AND ANONYMITY
Threema is designed from the ground up to generate as little data on servers as possible. Group memberships and contact lists are managed on your device only, and never stored on our servers. Messages are immediately deleted after they have been delivered. Local files are stored encrypted on your mobile phone or tablet. All this effectively prevents the collection and misuse of your personal information, including metadata. Threema is fully compliant with the European privacy legislation (GDPR).
ROCK-SOLID ENCRYPTION
Threema end-to-end encrypts all your communication, including messages, voice and video calls, group chats, files, and even status messages. Only the intended recipient, and nobody else, can read your messages. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on the users’ devices to prevent backdoor access or copies.
COMPREHENSIVE FEATURES
Threema is not only an encrypted and private messenger but also versatile and feature-rich.
• Write text and send voice messages
• Edit and delete sent messages on the recipient’s end
• Make voice, video and group calls
• Share videos, pictures and locations
• Send any type of file (PDF, animated GIF, MP3, DOC, ZIP, etc.)
• Use the desktop app or the web client to chat from your computer
• Create groups
• Conduct polls
• Choose between a dark and a light theme
• Quickly and silently reply with the unique agree/disagree feature
• Verify the identity of a contact by scanning their personal QR code
• Use Threema as anonymous instant messaging tool
• Synchronize your contacts (optional)
SERVERS IN SWITZERLAND
All our servers are located in Switzerland, and we develop our software in-house.
FULL ANONYMITY
Each Threema user receives a random Threema ID for identification. A phone number or email address is not required to use Threema. This unique feature allows you to use Threema completely anonymously – no need to give up private information or to open an account.
OPEN SOURCE AND AUDITS
The source code of the Threema app is open for everyone to review. On top of that, renowned experts are regularly commissioned to conduct systematic security audits of Threema’s code.
NO ADS, NO TRACKERS
Threema is not financed by advertising and does not collect user data.
SUPPORT / CONTACT
For questions or problems please consult our FAQs: https://threema.ch/en/faq
What’s New
Version 6.2
• New: Sent messages can be edited or deleted on the recipient’s end
• Various improvements for group calls
• Fixed various bugs that occurred when selecting and sending media
• Fixed various bugs that occurred when recording and sending voice messages
• Various other improvements and minor bug fixes
Ratings and Reviews
Pretty good
Ive been using threema for years now. Security wise its good. But i still think it lacks features.
1- id like there to be sending/delivered/read notifications on group chat messages.
2- the same thing many people have requested for yeaaars! Is auto deleting messages.
Always same answer: “its not as secure as u think, people can still take image with another device” yada yada
Yes, but its still a good feature to have, and has been requested countless times. And its not just about security. It saves memory, time and hassle. Ive had chats that end up lagging a LOT and i have to empty the chat, but it can take a good 10-15 mins to empty and i cant do anything else until its done. Just add the auto deleting feature and add a disclaimer.
I suspect theres another reason why they wont add it and wont say what it is.
Developer Response ,
Thank you for your suggestions. We’re happy to review them, but cannot indicate if or when they will be implemented.
Solid App
The app rarely crashes. The support team do answer messages after a day or so if you need help. Very occasionally a new release will show up a bug that resolves with shutting down the app, but these are dealt with in new releases. The features feel robust and the app typically gets strong scores on review sites for the design of its encryption.
Sometimes the app will take a while to make a secure connection if you have dodgy signal. In more recent versions that has improved. However it does have a clear indicator to show its progress (or lack thereof) and you have the reassurance of knowing it’s not lying to you for the sake of finesse.
You can only get a copy of your chat history by downloading as a secure zip file, which is then emailed to you. This function does work, and works well, though it feels a little unwieldy.
Threema is not the most popular secure messaging app. Fewer people you know are likely to be using it. Make your own decisions as to whether that is a bonus or a detraction. If you want a more popular secure messaging app then I suggest looking at Signal or Telegram. Last time I looked Signal’s encryption and security was roughly equivalent to Threema but Telegram’s was slightly less robust. This may have changed.
Over three years or so the app has always under promised and over delivered on what it advertises. I recommend it.
For the feeble
Threema is an unbearably poor messenger service that merely survives on the back of the reputation of its E2E quality and open source backend, but the truth is none of this matters if the actual app services are so incredibly poor. The servers are slow and lack capacity, and the encryption is not even close to what others can do, meaning a voice call will always require peak connection of both devices, meaning the app will probably only send 2 out of the 5 photos you want to send first try and also forget the caption, meaning don’t even think about a video call. Furthermore, the owners can probably not remember the last time they’ve invested in app features, meaning the app will not be remotely close to the messaging features (polling, questions, reactions, sharing locations, interactions with other apps) of competitor apps. Meaning the app will have issues with your Bluetooth devices and cause other synchronisation issues. Meaning it’s a sad excuse of a WhatsApp competitor and I could have gotten half a coffee for my money.
Developer Response ,
Thank you for your feedback. Unfortunately, we don’t understand to what your review is referring to, but we would love to help. It would be great if you could contact us at [email protected] so that we can find a solution.
Events
App Privacy
The developer, Threema GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Linked to You
The following data may be collected and linked to your identity:
- Contact Info
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Privacy practices may vary based on, for example, the features you use or your age. Learn More
Information
- Provider
- Threema GmbH
- Size
- 76.8 MB
- Category
- Social Networking
- Compatibility
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- iPhone
- Requires iOS 15.0 or later.
- iPad
- Requires iPadOS 15.0 or later.
- iPod touch
- Requires iOS 15.0 or later.
- Languages
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English, Czech, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Rhaeto-Romance, Russian, Simplified Chinese, Slovak, Spanish, Swiss German, Traditional Chinese, Turkish, Ukrainian
- Age Rating
- 4+
- Copyright
- © 2012-2024 Threema GmbH
- Price
- £5.99
Supports
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Wallet
Get all of your passes, tickets, cards, and more in one place.
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Family Sharing
Up to six family members can use this app with Family Sharing enabled.