Alttex is an innovative system which consists of a decentralized crypto exchange, crypto messenger, and crypto safe. Our system allows people to buy cryptocurrencies from any place in the world with any bank card. Alttex is a unique platform for mobile devices, which combines all the advanced technologies of blockchain. Here, each user can trade comfortably and safely, have purchases, make transfers of various coins. Also, the crypto messenger has the possibility of transferring various data for personal and commercial purposes, exchange voice messages, create secure chat rooms, use a customizable store, in which everyone can sell and buy goods with cryptocurrencies, make outgoing calls to any phone numbers around the 4 world minimum cost. Smart safe gives each user an opportunity to store their cryptocurrencies safely, to receive push notifications to update the current balance, changes in the rate and news every day.