Threema 4.5/5

us (224)
fr (31)
jp (10)
cn (6)
es (25)
pt (0)
br (18)
mx (6)
de (12409)
kr (0)
it (45)
se (6)
ru (142)
nl (66)
gb (53)


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By Threema GmbH (Kasper Systems GmbH)

Threema is the world’s favorite secure messenger and keeps your data out of the hands of hackers, corporations and governments. Threema can be used completely anonymously, allows to make end-to-end encrypted voice calls, and offers every feature one would expect from a state-of-the-art instant messenger.

Threema is designed to generate as little data on servers as possible – this is a core part of our concept. 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 meta data.

Threema encrypts ALL your communications END-TO-END including messages, voice calls, group chats, media files and even status messages. You can rest assured that only the intended recipient can read your chats, and nobody else – not even us. Threema uses the trusted open source NaCl cryptography library for encryption. The encryption keys are generated and safely stored on user’s devices to prevent backdoor access or copies.

Threema is not only an encrypted and private messenger but also versatile and feature-rich.

• write text and send voice messages
• make voice calls (requires iPhone 5s / iOS 9 or above)
• share videos, pictures and locations
• send any type of file (pdf, animated gif, mp3, doc, zip, etc.)
• create groups
• conduct polls with the unique poll feature
• 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)

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.

We let users confirm trusted contacts with a QR code or a key fingerprint to prevent man in the middle attacks.

We are a 100% independent and self-financed company in the heart of Switzerland with its own servers and in-house software development. Switzerland is a country with some of the most user friendly privacy laws in the world.

For questions or problems please consult our FAQs:

Release Notes

28/12/2017 | Version : 3.0.5 | Size : 60.9 MB
• The length restriction for text messages was removed
• Very long messages will be split and sent as multiple messages
• Preview of circular image section when cropping the profile picture, contact pictures, and group pictures
• Fixed a crash that would occur when “Save Media to Camera Roll” was enabled without granting the respective iOS permission
• On iOS 9, settings that are unavailable ("Push preview" and "Show nickname") are not displayed
• Improvements for iPhone X
• Resolved an issue that could occur when calling on speaker
• General improvements and bug fixes

19/10/2017 | Version : 3.0.1 | Size : 80.3 MB
• Fixed a bug that could reset the nickname and/or profile picture in certain cases
• Removed audio filter that caused low volume of voice recordings
• Fixed a bug that could, in some rare cases, reset the Sync Contacts setting
• On the lock screen, tap and hold the Threema icon to invoke the alphanumeric keyboard
• General improvements and miscellaneous bug fixes

10/08/2017 | Version : 2.10.1 | Size : 23.8 MB
• Various bug fixes


Categories :
#5 : Top Paid iPhone Applications [Social Networking]
#59 : Top Paid iPad Applications [Social Networking]

Screenshots iPhone / iPod :

Screenshots iPhone / iPod Screenshots iPhone / iPod Screenshots iPhone / iPod Screenshots iPhone / iPod Screenshots iPhone / iPod

Screenshots iPad :

Screenshots iPad Screenshots iPad Screenshots iPad Screenshots iPad Screenshots iPad


Utilities , Social Networking

Supported Devices : iPad 2 Wifi , iPad Wifi , iPad 2 3G , iPad 3G , iPod Touch 4th Gen , iPhone 4 , iPhone 3GS , iPod Touch 3rd Gen , iPad 4th Gen , iPad Mini 4G , iPhone 4S , iPhone 5 , iPad 3rd Gen , iPod Touch 5th Gen , iPad Mini , iPad 3rd Gen 4G , iPad 4th Gen 4G , iPhone 5C , iPhone 5S , iPod Touch 4th Gen , iPhone6 Plus , iPhone6 , iPod Touch 6th Gen , iPad 2 Wifi , iPad 2 3G , iPhone 4S , iPad 3rd Gen , iPad 3rd Gen 4G , iPhone 5 , iPod Touch 5th Gen , iPad 4th Gen , iPad 4th Gen 4G , iPad Mini , iPad Mini 4G , iPhone 5C , iPhone 5S , iPad Air , iPad Air Cel , iPad Mini Retina , iPad Mini Retina Cel , iPhone6 , iPhone6 Plus , iPad Air 2 , iPad Air 2 Cel , iPad Mini 3 , iPad Mini 3 Cel , iPod Touch 6th Gen , iPhone 6s , iPhone 6s Plus , iPad Mini 4 , iPad Mini 4 Cel , iPad Pro , iPad Pro Cel , iPad Pro 97 , iPad Pro 97 Cel , iPhone SE , iPhone 7 , iPhone 7 Plus , iPad 6.11 , iPad 6.12 , iPad 7.1 , iPad 7.2 , iPad 7.3 , iPad 7.4 , , , , , , , , , , , ,

Comments and Ratings for Threema

At least this Dev reads the reviews. (2.10.0)
28/05/2017 05:35:09 4/5 By Jobsagoodun
Updated: Battery issue seems to be solved. Thanks. It would be nice to have video calling. Maybe a future addition, if we're lucky. No complaints though. The app rarely crashes, and maintains a reliable connection. It doesn't need access to contacts, or need a phone number / email address. I'd stop using the app, if it did. At least I can use this app, without wondering about my privacy... I hope. Excellent job. Previous: I've been using this app for a while, and it does most of the things I need it for. So, no real complaints. I just hope the app is trustworthy, and that my privacy is intact. But (unless I'm mistaken), recently it has increased its battery usage, by quite a lot. Anyone else seeing this problem?

Great (2.9.0)
28/03/2017 07:29:26 5/5 By A nickname which is not taken.
Hopefully more people will use this.

Better than Telegram, not as reassuring as Signal (2.8.2)
05/03/2017 20:03:21 5/5 By Jimbob8976
I used to be a big fan of Telegram. I used it for weeks. Then I decided to dig a little deeper and check their encryption further. Telegram is flawed and their encryption model is weak. Google it for further details. Anyway, I highly recommend Signal for the most secure messaging system available that's also open source, something Threema is not. Other than that, Threema I believe has the same level of encryption as Signal and is a much better user friendly app and that's why I chose it over Signal. If Threema was open source it would be perfect, but I can understand why it's not. I note that they have been independently verified by third parties as to their encryption methods and received top marks. But who's to say these third parties haven't been paid off by Threema? But anyway, I think Threema is secure enough for my needs and I will continue to use it! Unless of course any evidence comes to light why I should not.

Just love this app (2.8.1)
16/02/2017 09:24:04 5/5 By Ray Ander
Could you please make an app for Apple Watch? That would really nice! Great app. Thanks!

Great app (2.7.3)
08/09/2016 22:45:00 4/5 By سيف حامد
Good app and easy to use, thanks Threema. I hope to see it supporting Arabic. Moreover, it would be worldwide spreading if it is free to gather more subscribers.

Just love this app (2.6.2)
06/04/2016 18:06:00 5/5 By Ray Ander
Very nice app. Thank you.

Simply the Best !!!! (2.6.1)
17/02/2016 07:19:00 5/5 By Benefitted
I have used many messengers but nothing comes close to threema when it comes to security and usability. It displays the notifications whether your message has been delivered or its in the server and when it has been read with times. Amazingly fast and pleasant on the eye If you're after a super fast no nonsense secure messenger look no further you won't be disappointed. Highly recommended !!

Works like a charm (2.6.0)
06/02/2016 16:42:00 5/5 By bruelltuete
Does what it says on the tin. No non-sense frills, and totally anonymous if you want to.

Good app but lacks high encryption (2.4.3)
19/11/2015 19:31:00 4/5 By Jay-Producer
Overall this app is really good and I love that you can only be identified by a number or username. No links to your number or contacts. Good verification system for contacts. Clear privacy policy on their website and the server being based in Switzerland means NSA and British Intelligence cannot spy on you or ask the swiz server company to handover information. There are a few things that will improve this app. Better encryption that is doubled in bit as its not as secure as Wickr. Confirmation if your IP location can or cannot be found using this app. Added Security to include a key to unscramble messages as optional two-layer security encryption (which is re-set every month).

Crashes - not usable - kaputt (2.4.0)
31/07/2015 15:00:00 1/5 By Guesme
Since last update - no star really!

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