iPhone Screenshots


LetKnow is a cross-functional space for secure communication.
Today It includes a messenger with a modern encrypting system and a customizable personal blog.
Soon It’ll evolve into «LetKnow World» - a payment system of 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:
1. 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;
2. Personal blog
- Meet interesting people, let them know who you are;
- Blog feed: look through, assess, re-post and share the content you like.

- Instantaneous crypto exchange;
- Fast and convenient crypto payments;

What’s New

Version 0.6.2

- New LetKnow Messenger design. Check out the interface improvements;
- Calls history function. Track your statistics: conversation length, the number of missed calls, etc;
- Messages multiselection. Select the necessary and apply any functions to all the selected messages at once;
- Share location function. Share important and interesting places with your friends in LetKnow Messenger chats;
- Customized notifications in LetKnow Net. Decide, what events in the social network you want to know about first.

Ratings and Reviews

4.0 out of 5
2 Ratings

2 Ratings


263.6 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Albanian, Arabic, Azerbaijani, Bosnian, Bulgarian, Burmese, Cambodian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, Galician, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Latvian, Lithuanian, Macedonian, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Shona, Simplified Chinese, Slovenian, Spanish, Swedish, Thai, Traditional Chinese, Turkish

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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