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Kullo – Secure Communication

By Kullo GmbH

This app is only available on the App Store for iOS devices.


Kullo is the most user-friendly secure communication solution. Worldwide · Secure · User-friendly!

Kullo offers secure text communication for business and private users, who want to communicate confidentially.

Within the Kullo environment, we guarantee an end-to-end encryption all the time. Every message is encrypted on the sender's device and can only be decrypted by the recipient. Not even we can read your messages.

Software development and storage of user's data is based in Germany and thus is subject to the German data protection laws. At the same time, Kullo GmbH collects only data necessary to provide the service.

No expert know-how is needed. A Kullo address is set up and ready to use in three minutes. The usability and availability of the software on all major platforms is a significant advantage compared to alternatives like PGP or S/MIME.

Users can set up their own Kullo servers because the Kullo protocol is freely available.

Your inbox is always synchronized with all your devices.

With Kullo you can send attachments fully encrypted.

If you're not using Kullo every day, you can get email notifications whenever there is a new message in you Kullo inbox.

If you have problems or feedback, feel free to drop us a line. Email: Kullo: Twitter: @kulloproject We look forward to hearing from you!

What's New in Version 34

We fixed some problems with handling attachments.

iPhone Screenshots

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Kullo – Secure Communication
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  • Free
  • Category: Productivity
  • Updated:
  • Version: 34
  • Size: 36.8 MB
  • Languages: English, German
  • Seller:

Compatibility: Requires iOS 8.1 or later. Compatible with iPhone, iPad, and iPod touch.

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