I don't think you are safe with the blockchain , since blockchain is official wallet of the Bitcoin but it is  only the wallet which handle your transaction , but after the hardfork , may be two chains can't be classify by the blockchain wallet .
So it will be more better to use direct address which has the private key for your Bitcoin address and you can handle them at every step without facing any problem .
But if you don't want to put your btc in blockchain , then go at the settings >> address > create new address > create new address and deposit Bitcoin at the new address and also make export the private key and copy the privacy practices key at safe place where no one can reach easily .
You can also use mysellium wallet also which is available at play store to download at Android platform .