Installing is just a matter of downloading from iTunes or google play. This is a very new product and they have to pay EOS to create a "free" EOS account for you. My understanding is they've paused that piece for a bit while they work out the best way to get it accomplished... A ton of users downloded the app in the first hours is came available. When "create new account" is back on, there's no easier way to get on the EOS net.
RE: EDNA Announces iPhone/Andriod Support For EDNA Tokens ++ bonus-airdrops ++