Evercoin App is great, you can trade from a coin wallet about 16 known and not so well known coins at the moment.

Coinbase App functions without any issues however purchasing from USD at the moment is taking 7 days for the transaction to complete.

I could be wrong on this part regarding ICOs. I'm finding on some ICOs to obtain them you can buy a new ICO from the developer via their wallet or be one of the first few miners.