ChatS - Chat with your friends securely and secretly by self-encrypted communication.
Easy to use messenger tool that use encryption/decryption techniques to only send coded messages free via the web.
You chose the encryption key, stored encrypted on your device using a Password potentially stored nowhere, and that only you know.
Send the messages encoded, and decoded by a PasCode only you and your friend, the recipient, knows.

View Caller ID via CallerID, easily block spam calls and unwanted calls.