I wrote up a review of the major Bitcoin Wallets for the iPhone here.
https://e4btc.com/article/iphone-bitcoin-wallets-comprehensive-reviewI didn't mention it in the article, but my personal favorite is bitWallet. Anybody else using it too?
The blockchain wallet app is really a minor facelift from the old version. Even when unlocking the wallet with a PIN, a pixelated, old number keypad shows up. Oops.