I thought it was an interesting concept but I'm waiting for it to gain more traction before giving it a whirl; I definitely wouldn't use it to store my BTC in, but the idea of offline transactions would certainly allow speedier transfers. My biggest concern is security, as we've seen plenty of other wallet sites result in a loss of BTC for its users.
then if you have some better idea for this please tell us I have also same concerns like you but no option so using this inputs.ioI don't have any better ideas for an offchain wallet; I use electrum as my wallet, but it's a desktop wallet.
There's also the blockchain wallet, which is a website wallet.
