About this app

Linkcast is a business messenger that does not leak the chat content developed with high security focus.Of course, you can use it for free.

The world's highest level of privacy has been achieved with overwhelming levels of protection. Smartphone to each other, do direct encrypted communication without relaying the server. Therefore, there is no risk of information leakage, information censorship, etc.
Of course, AI does not parse or track your writing. Of course, we can not analyze the contents of your communication at all.

It is different from a general messenger. The link cast does not have a message server. However, you can use it as a messenger without any discomfort.

In addition, encrypted files send and receive large capacity.It is very useful for sending files overseas at high speed.

Because the proprietary pull type P2P technology does not require unnecessary communication, the data usage is very small, unlike P2P, which generally consumes bandwidth.
-All functions are free.
-For bussiness
-A messenger developed in Japan.
-Ideal for communication, business etc. that require confidentiality
-Designed to re-emphasize security
-P2P Encrypted file transfer with no capacity limit
-With its own UDP/encryption protocol, high speed communication with overseas.
-Large capacity, fast file transfer, send and receive.
-Encoded by elliptic curve cipher (ECDHE) and AES256
-HMAC-SHA512 to prevent tampering -Buzz cast.
Up to 10 concurrent multi-person live chat
-Unlimited number of video chats
-Multi-person watch video streaming at the same time

-High quality telephone and voice call. ※ It is recommended for those who use a security messenger such as a telegram, a signal.

Please try it by all means. * We continue to develop based on feedback.
Please give us your opinion so that it becomes more stable app.

New features

・Fixed a bug where the vibration would not stop during a call.

App Permissions

Allows an application to change the Z-order of tasks.
Allows applications to open network sockets.
Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.
Allows an application to read the user's contacts data.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows applications to enter Wi-Fi Multicast mode.
Allows an application to modify global audio settings.
Allows an application to record audio.
Required to be able to access the camera device.
Allows applications to access information about Wi-Fi networks.
Allows applications to access information about networks.
Allows an application to write to external storage.
Allows an application to read from external storage.
Allows access to the vibrator.
Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.
Allows an app to create windows using the type TYPE_APPLICATION_OVERLAY, shown on top of all other apps.
Allows applications to perform I/O operations over NFC.
Allows an app to access approximate location.
Allows an app to access precise location.