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Android Apps > Communication > Threema
Threema icon

Threema

Threema is the messenger with the most consistent focus on security and privacy.

by Threema GmbH
Download Threema APK from Google Play
Download Threema APK from Google Play
Threema video
Threema Screenshot
Threema Screenshot
Threema Screenshot
Threema Screenshot
Threema Screenshot
Threema Screenshot
Threema Screenshot
Threema Screenshot
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About Threema

Threema is a communication app developed by Threema GmbH. The APK has been available since May 2013. Threema has been downloaded 1+ million times.
It's top ranked.
It's rated 4.12 out of 5 stars, based on 68,616 ratings. The last update of the app was on April 25, 2023. Threema has a content rating "Everyone".
Threema has an APK download size of 28853 kb and the latest version available is 5.0.5. Designed for Android version 4.4+. Threema costs $5.0 to download.
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, allows to make end-to-end encrypted voice and video calls, and offers every feature one would expect from a state-of-the-art instant messenger. With Threema Web, 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).

HIGHEST ENCRYPTION STRENGTH
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 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
• Make voice and video calls
• Share videos pictures and locations
• Send any type of file (pdf animated gif, mp3, doc, zip, etc.)
• Use Threema Web to chat from your Desktop
• Create groups
• Conduct polls with the 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)

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

Recent changes:
- Fixed a bug in relation to linking a phone number with a Threema ID in the setup wizard
- Fixed a bug that could prevent calls from being started in certain conditions
- When joining group calls with lots of participants, the mic is now automatically muted
- Improved indication of ongoing group calls in chat overview
- Improvements in relation to editing groups
- Other improvements and minor bug fixes
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More data about Threema

Price
$5.0
Downloads
1+ million
Download estimate
Recent downloads
Rating
4.12 based on 68,616 ratings
Ranking
Top ranked
Version
5.0.5
APK size
28.2 MB
Number of libraries
26
Designed for Android
4.4+
Suitable for
Everyone

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Google Play Rating history and histogram

43957
8871
3596
3596
8471

Changelog

Show changelog

Developer information for Threema GmbH

Threema GmbH

support@threema.ch

Website

Churerstrasse 82
8808 Pfäffikon SZ
Switzerland

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Comments on Threema for Android

★★★★★ I like the service, but I do I have one complaint, if I'm mgs someone, and they don't close the app afters me back, and I send them another mgs it won't go through until they unlock there phone and open the app. If they close the app completely and then I mgs them then it will go through. But if there threema app is not closed just running in the background the mgs won't go through. This is the same for my phone as well when they are trying to mgs me. Kinda annoying plz fix this
★★★★★ This is a must-have app to keep what your saying private from anyone who monitor your texting. Signal is just now figuring that out. While threema knew what was important and that is privacy
★★★★★ It is all about secure messages and the app is getting it right. External auditors to verify securities. Audio calls are crystal clear. Video calls are very good, but they also require stable and fast internet connection and a fast phone with acceptable memory size. Continuous updates with new features and an info channel within the app to give notifications about new stuff (optional). The one time fee is fine but threema needs to adopt a fee policy convenient to each market and advertise itself
★★☆☆☆ Bought this app because Signal is stopping their SMS service today. Just read that Threema doesn't support SMS. Guess I'll have to find another Signal replacement. Threema needs to state that they don't support SMS messages to let people know this. DON'T BUY THIS APP BECAUSE YOU WILL NOT RECEIVE A REFUND!!! Seems like they are scamming people who are looking for a Signal replacement. I guess I'll have to call my CC company and try to reverse the charges for it.
★★☆☆☆ Was looking for secure sms app, this isn't it. Doesn't even do text messages. You can only communicate with other people who have paid for Threema. Not sure how this is better than telegram. Buyer beware: Google will NOT refund your purchase for this app.
★★☆☆☆ I allowed threema to access contacts, but there are no contacts in my app. The phone doesn't see 3ma as an option for SMS. I can't set 3ma as the default messaging app.

Google Play Rankings

Top rankings

Rank Country Category List
1 Australia Overall Top Paid
2 Canada Overall Top Paid
1 Switzerland Overall Top Paid
2 Germany Overall Top Paid
2 Austria Overall Top Paid
1 Australia Applications Top Paid
2 Canada Applications Top Paid
1 Switzerland Applications Top Paid
2 Germany Applications Top Paid
3 Czech Republic Overall Top Paid
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Ranking history in Australia

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Permissions

Development tools
test access to protected storage
Your personal information
read your contacts, modify your contacts
Services that cost you money
directly call phone numbers
Your location
approximate (network-based) location, precise (GPS) location
Network communication
view network connections, view Wi-Fi connections, full network access, Google Play license check, receive data from Internet
Your accounts
create accounts and set passwords, find accounts on the device, add or remove accounts
Storage
modify or delete the contents of your USB storage
Phone calls
read phone status and identity
Hardware controls
take pictures and videos, change your audio settings, record audio, control vibration
System tools
read sync settings, run at startup, prevent phone from sleeping, toggle sync on and off, install shortcuts
Extra
android.permission.ANSWER_PHONE_CALLS, android.permission.BLUETOOTH_CONNECT, android.permission.FOREGROUND_SERVICE, android.permission.USE_BIOMETRIC, android.permission.USE_FINGERPRINT, android.permission.USE_FULL_SCREEN_INTENT, ch.threema.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION, com.huawei.android.launcher.permission.CHANGE_BADGE, com.huawei.android.launcher.permission.READ_SETTINGS, com.huawei.android.launcher.permission.WRITE_SETTINGS, com.sonymobile.home.permission.PROVIDER_INSERT_BADGE

Technologies used by Threema

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core Android Library IconAndroid Jetpack core Android Architecture Components Android Library IconAndroid Architecture Components Firebase Android Library IconFirebase Android Jetpack VersionedParcelable Android Library IconAndroid Jetpack VersionedParcelable Android Jetpack Annotations Android Library IconAndroid Jetpack Annotations Android Jetpack Widgets Android Library IconAndroid Jetpack Widgets Android Jetpack AppCompat Android Library IconAndroid Jetpack AppCompat Google Cloud Messaging (GCM) Android Library IconGoogle Cloud Messaging (GCM) Android Jetpack Media Android Library IconAndroid Jetpack Media AndroidX Activity Android Library IconAndroidX Activity Android Activity Saved State Android Library IconAndroid Activity Saved State Android Transition Support Library Android Library IconAndroid Transition Support Library AndroidX Legacy: Support Library core UI Android Library IconAndroidX Legacy: Support Library core UI Google gson Android Library IconGoogle gson Kotlin Android Library IconKotlin Glide Android Library IconGlide AndroidX Widget ViewPager2 Android Library IconAndroidX Widget ViewPager2 Android WorkManager Android Library IconAndroid WorkManager AndroidX Multi-Dex Library Android Library IconAndroidX Multi-Dex Library FasterXML Jackson Android Library IconFasterXML Jackson Simple Logging Facade for Java (SLF4J) Android Library IconSimple Logging Facade for Java (SLF4J) Android Image Cropper Android Library IconAndroid Image Cropper Android GIF Drawable Android Library IconAndroid GIF Drawable Subsampling scale image view Android Library IconSubsampling scale image view Mapbox Android Library IconMapbox MessagePack Android Library IconMessagePack
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