On what platforms will Timechain be available?

-Desktop app for initial launch
- Web app for fiat to crypto exchange
-Mobile app for Android and IOS in 2019
-dApps for decentralized exchange

How come you decided to go with desktop app for the launch?

Will you offer a crypto to fiat gateway too?

That would be great option, and convenient. Maybe not for all cryptocurrencies, but for ETH and BTC.

Can someone explain what that gateway is? I understand what it's for, but can explain the background.

It is just a wording used to describe a service that allows you to exchange your cryptocurrency for fiat money - USD, EUR and so forth...