Review of BlockChain Bitcoin Wallet powered by the Slant community.
Ranked in these QuestionsQuestion Ranking
Pro Allows automatically backing up the wallet to a computer
Can be set up to manually as well as automatically backup the wallet to a computer.
Pro Can import and export private key
Pro Open source
Pro Supports P2P transactions
If the centralized server goes offline the app will still allow making offline purchase via peer-to-peer connection.