As you know Coinbase is a new player for cryptocurrencies's wallet. Founded 2012. As long i and my friend used coinbase, i have no worried about it. Coinbase is also Indonesian language, i never worried.
User Interface in App is very easy use. But if you use in Low Handphone, you are in trouble, hehe.
You can use debit card also. Don't worry about the speed if you change your cryptocurrencies. Very fast. In this world there 30 Milion user.
Is coinbase safe ?
Yes, coinbase is a bitcoin company in San Francisco, and backed by trusted investor.
Coinbase raised $75 million in the single largest venture-capital fundraising by a bitcoin-related startup. Investors included bank and New York Stock Exchange.