Threema. The Secure Messenger

Name: Threema. The Secure Messenger
Price: 6.99 GBP
Rating: 4 (147 reviews)
Author: Threema GmbH

Secure. Anonymous. Private.

£6.99

147 Ratings
Ages

4+
Years
Category

Social Networking
Developer

Threema GmbH
Language

EN
+ 20 More
Size

107.5
MB

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!

Ratings & Reviews

4.0

out of 5

147 Ratings

Pretty good
09/06/2023

hdhehreisbwi
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 yadaYes, 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.
Pretty good
09/06/2023

hdhehreisbwi

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 yadaYes, 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 11/06/2023
Thank you for your suggestions. We’re happy to review them, but cannot indicate if or when they will be implemented.
Solid App
17/11/2017

le Chat Perdu
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.
Solid App
17/11/2017

le Chat Perdu

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
11/08/2024

Freddy186
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 help@threema.ch so that we can find a solution.
For the feeble
11/08/2024

Freddy186

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 17/08/2024
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 help@threema.ch so that we can find a solution.
Nothing worth buying
17/07/2023

Slaney996
Whilst this secure messenger does what it says to a degree there are other applications that do it for free. I’ve had most video connections not connecting and saying trying to connect when both phones have got full signal. This I know for a fact, as I have trialled them side-by-side and can see what is on the display in both instances. I certainly don’t think this company yet has the sufficient infrastructure for video calling compared to the likes of Facebook et cetera hence bad quality calls even when they are connected at best. The other slightly annoying thing is, you cannot customise one or two of the notification sounds you end up with the default one which is horrible and for a paid app this shouldn’t be the case.

Developer Response
Thank you for your feedback! Problems related to Threema calls are often caused by the network configuration. We’re happy to help. Please provide as detailed information as possible: help@threema.ch
Nothing worth buying
17/07/2023

Slaney996

Whilst this secure messenger does what it says to a degree there are other applications that do it for free. I’ve had most video connections not connecting and saying trying to connect when both phones have got full signal. This I know for a fact, as I have trialled them side-by-side and can see what is on the display in both instances. I certainly don’t think this company yet has the sufficient infrastructure for video calling compared to the likes of Facebook et cetera hence bad quality calls even when they are connected at best. The other slightly annoying thing is, you cannot customise one or two of the notification sounds you end up with the default one which is horrible and for a paid app this shouldn’t be the case.
Developer Response 19/07/2023
Thank you for your feedback! Problems related to Threema calls are often caused by the network configuration. We’re happy to help. Please provide as detailed information as possible: help@threema.ch

• Various bug fixes and general improvements Threema 7.0.5 • Various improvements related to restoring a Threema Safe backup • Various bug fixes and general improvements Threema 7.0.4 • Fixed a bug that caused messages to be sent late when switching networks • Fixed various bugs related to restoring a Threema Safe backup • Various bug fixes and general improvements Threema 7.0.2 • Various bug fixes Threema 7.0.1 • More reliable Threema calls • Various bug fixes and general improvements Threema 7.0 • This version supports iOS 17 and newer • New: Recommend Threema Work and earn a referral bonus! • A more modern look with redesigned screens for • Adding contacts • Creating groups • Starting a new chat • Creating and viewing polls • Previewing file messages and full-screen images • Selecting a document or contact • Scanning QR codes • Editing your profile • Linking a phone number or email address • Setting a revocation password • ID export • Various under-the-hood changes • Various bug fixes and general improvements

Version 7.0.6

2 days ago

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