LetKnow - encrypted messenger0.7 - Google Play

LetKnow is a cross-functional space for secure communication.
Today It includes a messenger with a modern encrypting system, a customizable personal blog and a new test functionality - personal cryptocurrency wallets.
Soon It’ll evolve into «LetKnow World» - a payment system of a new generation for crypto and fiat money. It will contain a broad range of financial instruments for entrepreneurship and daily life along with convenient communication services:
-Secure messenger - LetKnow Messenger;
-Multiblog social network - LetKnow Net;
-Specialized news edition - LetKnow News;
-Crypto and fiat exchange point - LetKnow Exchange;
-Crypto and fiat payment system - LetKnow Pay;
-Cryptocurrency stock exchange - LetKnow Trade;
-Raising money for startups ICO service - LetKnow ICO Processing;
-Multicurrency wallets - LetKnow Wallet;
-Transaction protection service - LetKnow Escrow.
The objective of «LetKnow World» – adapt blockchain opportunities to our everyday life.
We believe this technology can make the lives of millions of people better.

List of features:

Secure messenger.
-Personal audio\videos calls – call anywhere in the world;
-Group audio\videos calls (video rooms) – hold conferences, meetings, chat with your family and friends;
-Self-destructing messages – set a timer, send a message and be calm - it will be deleted from all the devices exactly in time;
-Backups – all the important data is kept in the cloud storage;
-Chat archiving – the messenger archives the unused chats. If you receive a new message, the chat will automatically resume;
-Deleting and editing of sent messages;

Personal blog
-Meet interesting people, let them know who you are;
-Blog feed: look through, assess, re-post and share the content you like.

Wallet
Wallets and transactions in bitcoin testnet: try the new feature out with risk-free TBTC currency.