iPhone Screenshots


KLine is specially designed for protecting enterprise communication security, which can make anti-hacking IP call and send encrypted messages. High-quality and ultra-clear voice effect let you experience the best communications service.
(1) Not just a simple calculator. KLine is an ideal common tool for communication security, popular among friends and business partners for private chat and encrypted call.
(2) Support continuous calculation and complex expressions input. And simple interface style and classic industrial design will never be out of date.
(3) Highest level of communication security: A unique encryption key for each call is created at the beginning of the conversation. All the data packets of the call are end-to-end encrypted and transmitted via Internet, which means very difficult and time-consuming to be decoded.
(4) Leading anti-hacking technology: One SAS is the unique identifier of each call and should be verified by both verbally during conversation. Stop unsafe communication immediately if SAS is found different.
(5) Burn-after-reading messages: Burn-after-reading and encrypted messages for picture, voice and text format. Off the record on mobile phones and servers.
(6) Encrypted file sharing: This feature provides a higher level security proposal for mobile office. Important files in your mobile phone can be transferred to colleagues and partners with encryption technology to solve the increasingly prominent Internet security problems.
(7) Never leak privacy, no guess anybody you may know. Here you own an absolute trustable private social network all by yourself.
If you have any suggestions or comments, please contact us:
Official website:http://www.zen-phone.com/
Customer Service Email:kline_cs@zen-phone.com
Customer service QQ group: 230207517

What’s New

Version 1.8.0

(1) Optimize and strengthen the security of encrypted phone calls.
(2) Fix some bugs.

Ratings and Reviews

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Zen-phone Network Security Technology Ltd.
75.4 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad and iPod touch.
English, Simplified Chinese, Traditional Chinese
Age Rating
Rated 4+
© Zen-phone Technology
In-App Purchases
  1. Gold VIP - 12 months ¥1,298.00


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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